GLEAMEGCAT - GaLactic and Extragalactic All-sky MWA Survey (GLEAM) Extragalactic Catalog

Overview

Using the Murchison Widefield Array (MWA), the low-frequency Square Kilometre Array (SKA1 LOW) precursor located in Western Australia, the authors have completed the GaLactic and Extragalactic All-sky MWA (GLEAM) survey, and present the resulting extragalactic catalog, utilizing the first year of observations. The catalog covers 24,402 square degrees, over Declinations south of +30 degrees and Galactic latitudes outside 10 degrees of the Galactic Plane, excluding some areas such as the Magellanic Clouds. It contains 307,455 radio sources with 20 separate flux density measurements across 72 - 231 MHz, selected from a time- and frequency-integrated image centered at 200 MHz, with a resolution of ~ 2 arcminutes. Over the catalogued region, the authors estimate that the catalog is 90% complete at 170 mJy, and 50% complete at 55 mJy, and large areas are complete at even lower flux density levels. Its reliability is 99.97% above the 5-sigma detection threshold, which itself is typically 50 mJy. These observations constitute the widest fractional bandwidth and largest sky area survey at radio frequencies to date, and calibrate the low frequency flux density scale of the southern sky to better than 10%. The reference paper presents details of the flagging, imaging, mosaicking, and source extraction/characterization, as well as estimates of the completeness and reliability. All source measurements and images are available online at http://www.mwatelescope.org/. This is the first in a series of publications describing the GLEAM survey results.

GLEAM observes in week-long drift scan campaigns, with a single Dec strip observed each night. The observing bandwidth of 72-231 MHz is covered by shifting frequencies by 30.72 MHz every two minutes, avoiding the Orbcomm satellite constellation at 134-139 MHz. Thus, the frequencies of observation are 72-103, 103-134, 139-170, 170-200. and 200-231 MHz. These may be further subdivided for imaging purposes; in this study, the 30.72 MHz bandwidth is commonly subdivided into four 7.68 MHz sub-channels. The native channel resolution of these observations is 40 kHz and the native time resolution is 0.5 seconds.

This paper concerns only data collected in the first year, i.e. four weeks between June 2013 and July 2014. The authors also do not image every observation, since the survey is redundant across approximately 50% of the observed RA ranges, and some parts are adversely acted by the Galactic plane and Centaurus A. Table 1 in the reference paper lists the observations which have been used to create this first GLEAM catalog.

The HEASARC has converted the flux density units from those given in the original table (Jy and Jy/beam) to its standard units for radio flux densities (mJy and mJy/beam).

Catalog Bibcode

2017MNRAS.464.1146H

References

GaLactic and Extragalactic All-sky Murchison Wide Field Array (GLEAM) survey.
I: A low-frequency extragalactic catalogue.
    Hurley-Walker N., Callingham J.R., Hancock P.J., Franzen T.M.O.,
    Hindson L., Kapinska A.D., Morgan J., Offringa A.R., Wayth R.B., Wu C.,
    Zheng Q., Murphy T., Bell M.E., Dwarakanath K.S., For B., Gaensler B.M.,
    Johnston-Hollitt M., Lenc E., Procopio P., Staveley-Smith L., Ekers R.,
    Bowman J.D., Briggs F., Cappallo R.J., Deshpande A.A., Greenhill L.,
    Hazelton B.J., Kaplan D.L., Lonsdale C.J., McWhirter S.R., Mitchell D.A.,
    Morales M.F., Morgan E., Oberoi D., Ord S.M., Prabu T., Udaya Shankar N.,
    Srivani K.S., Subrahmanyan R., Tingay S.J., Webster R.L., Williams A.,
    Williams C.L.
   <Mon. Not. R. Astron. Soc., 464, 1146-1167 (2017)>
   =2017MNRAS.464.1146H
   =2016yCat.8100....0H

Provenance

This table was originally ingest by the HEASARC in February 2017 based on CDS Catalog VIII/100 file gleamegc.dat, the GLEAM Extragalactic Catalog. It was updated in May 2018 to the corrected version provided to the CDS by the author.

Parameters

Name
The J2000.0 position-based radio source designation, 'GLEAM JHHMMSS+DDMMSS', where the prefix stands for 'GaLactic and Extragalactic All-sky Murchison Widefield Array.

RA
The Right Ascension of the radio source in the selected equinox. This was given in J2000.0 decimal degrees to a precision of 10^-6 degrees (0.0036 arcseconds) in the original table.

RA_Error
The RMS uncertainty in the Right Ascension of the radio source, in arcseconds. No positional errors are given for those sources which failed to fit their positions correctly.

Dec
The Declination of the radio source in the selected equinox. This was given in J2000.0 decimal degrees to a precision of 10^-6 degrees (0.0036 arcseconds) in the original table.

Dec_Error
The RMS uncertainty in the Declination of the radio source, in arcseconds. No positional errors are given for those sources which failed to fit their positions correctly.

LII
The Galactic Longitude of the radio source.

BII
The Galactic Latitude of the radio source.

Bck_Wide
The background level in the wide (170-231 MHz) image, in mJy/beam.

Local_RMS_Wide
The local noise level in the wide (170-231 MHz) image, in mJy/beam.

Flux_Wide
The peak flux of the radio source in the wide (170-231 MHz) image, in mJy/beam.

Flux_Wide_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the the wide image, in mJy/beam.

Int_Flux_Wide
The integrated flux of the radio source in the wide (170-231 MHz) image, in mJy.

Int_Flux_Wide_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the wide image, in mJy.

A_Wide
The fitted semi-major axis of the radio source in the wide (170-231 MHz) image, in arcseconds.

A_Wide_Error
The RMS uncertainty in the fitted semi-major axis of the radio source in the wide image, in arcseconds.

B_Wide
The fitted semi-minor axis of the radio source in the wide (170-231 MHz) image, in arcseconds.

B_Wide_Error
The RMS uncertainty in the fitted semi-minor axis of the radio source in the wide image, in arcseconds.

PA_Wide
The fitted position angle of the radio source in the wide (170-231 MHz) image, in degrees.

PA_Wide_Error
The RMS uncertainty in the fitted position angle of the radio source in the wide image, in degrees.

Resid_Mean_Wide
The mean value of the data model for the radio source in the wide (170-231 MHz) image, in mJy/beam.

Resid_Sd_Wide
The standard deviation of the data model for the radio source in the wide (170-231 MHz) image, in mJy/beam.

Abs_Flux_Pct_Error
The percentage error in the absolute flux scale over all frequencies.

Fit_Flux_Pct_Error
The percentage error in the internal flux scale over all frequencies.

A_PSF_Wide
The semi-major axis of the point spread function of the radio source in the wide (170-231 MHz) image, in arcseconds.

B_PSF_Wide
The semi-minor axis of the point spread function of the radio source in the wide (170-231 MHz) image, in arcseconds.

PA_PSF_Wide
The position angle of the point spread function of the radio source in the wide (170-231 MHz) image, in degrees.

Bck_76_MHz
The background level in the 072-080 MHz image, in mJy/beam.

Local_RMS_76_MHz
The local noise level in the 072-080 MHz image, in mJy/beam.

Flux_76_MHz
The peak flux of the radio source in the 072-080 MHz image, in mJy/beam.

Flux_76_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 072-080 MHz image, in mJy/beam.

Int_Flux_76_MHz
The integrated flux of the radio source in the 072-080 MHz image, in mJy.

Int_Flux_76_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 072-080 MHz image, in mJy.

A_76_MHz
The fitted semi-major axis of the radio source in the 072-080 MHz image, in arcseconds.

B_76_MHz
The fitted semi-minor axis of the radio source in the 072-080 MHz image, in arcseconds.

PA_76_MHz
The fitted position angle of the radio source in the 072-080 MHz image, in degrees.

Resid_Mean_76_MHz
The mean value of the data model for the radio source in the 072-080 MHz image, in mJy/beam.

Resid_Sd_76_MHz
The standard deviation of the data model for the radio source in the 072-080 MHz image, in mJy/beam.

A_PSF_76_MHz
The semi-major axis of the point spread function of the radio source in the 072-080 MHz image, in arcseconds.

B_PSF_76_MHz
The semi-minor axis of the point spread function of the radio source in the 072-080 MHz image, in arcseconds.

PA_PSF_76_MHz
The position angle of the point spread function of the radio source in the 072-080 MHz image, in degrees.

Bck_84_MHz
The background level in the 080-088 MHz image, in mJy/beam.

Local_RMS_84_MHz
The local noise level in the 080-088 MHz image, in mJy/beam.

Flux_84_MHz
The peak flux of the radio source in the 080-088 MHz image, in mJy/beam.

Flux_84_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 080-088 MHz image, in mJy/beam.

Int_Flux_84_MHz
The integrated flux of the radio source in the 080-088 MHz image, in mJy.

Int_Flux_84_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 080-088 MHz image, in mJy.

A_84_MHz
The fitted semi-major axis of the radio source in the 080-088 MHz image, in arcseconds.

B_84_MHz
The fitted semi-minor axis of the radio source in the 080-088 MHz image, in arcseconds.

PA_84_MHz
The fitted position angle of the radio source in the 080-088 MHz image, in degrees.

Resid_Mean_84_MHz
The mean value of the data model for the radio source in the 080-088 MHz image, in mJy/beam.

Resid_Sd_84_MHz
The standard deviation of the data model for the radio source in the 080-088 MHz image, in mJy/beam.

A_PSF_84_MHz
The semi-major axis of the point spread function of the radio source in the 080-088 MHz image, in arcseconds.

B_PSF_84_MHz
The semi-minor axis of the point spread function of the radio source in the 080-088 MHz image, in arcseconds.

PA_PSF_84_MHz
The position angle of the point spread function of the radio source in the 080-088 MHz image, in degrees.

Bck_92_MHz
The background level in the 088-095 MHz image, in mJy/beam.

Local_RMS_92_MHz
The local noise level in the 088-095 MHz image, in mJy/beam.

Flux_92_MHz
The peak flux of the radio source in the 088-095 MHz image, in mJy/beam.

Flux_92_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 088-095 MHz image, in mJy/beam.

Int_Flux_92_MHz
The integrated flux of the radio source in the 088-095 MHz image, in mJy.

Int_Flux_92_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 088-095 MHz image, in mJy.

A_92_MHz
The fitted semi-major axis of the radio source in the 088-095 MHz image, in arcseconds.

B_92_MHz
The fitted semi-minor axis of the radio source in the 088-095 MHz image, in arcseconds.

PA_92_MHz
The fitted position angle of the radio source in the 088-095 MHz image, in degrees.

Resid_Mean_92_MHz
The mean value of the data model for the radio source in the 088-095 MHz image, in mJy/beam.

Resid_Sd_92_MHz
The standard deviation of the data model for the radio source in the 088-095 MHz image, in mJy/beam.

A_PSF_92_MHz
The semi-major axis of the point spread function of the radio source in the 088-095 MHz image, in arcseconds.

B_PSF_92_MHz
The semi-minor axis of the point spread function of the radio source in the 088-095 MHz image, in arcseconds.

PA_PSF_92_MHz
The position angle of the point spread function of the radio source in the 088-095 MHz image, in degrees.

Bck_99_MHz
The background level in the 095-103 MHz image, in mJy/beam.

Local_RMS_99_MHz
The local noise level in the 095-103 MHz image, in mJy/beam.

Flux_99_MHz
The peak flux of the radio source in the 095-103 MHz image, in mJy/beam.

Flux_99_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 095-103 MHz image, in mJy/beam.

Int_Flux_99_MHz
The integrated flux of the radio source in the 095-103 MHz image, in mJy.

Int_Flux_99_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 095-103 MHz image, in mJy.

A_99_MHz
The fitted semi-major axis of the radio source in the 095-103 MHz image, in arcseconds.

B_99_MHz
The fitted semi-minor axis of the radio source in the 095-103 MHz image, in arcseconds.

PA_99_MHz
The fitted position angle of the radio source in the 095-103 MHz image, in degrees.

Resid_Mean_99_MHz
The mean value of the data model for the radio source in the 095-103 MHz image, in mJy/beam.

Resid_Sd_99_MHz
The standard deviation of the data model for the radio source in the 095-103 MHz image, in mJy/beam.

A_PSF_99_MHz
The semi-major axis of the point spread function of the radio source in the 095-103 MHz image, in arcseconds.

B_PSF_99_MHz
The semi-minor axis of the point spread function of the radio source in the 095-103 MHz image, in arcseconds.

PA_PSF_99_MHz
The position angle of the point spread function of the radio source in the 095-103 MHz image, in degrees.

Bck_107_MHz
The background level in the 103-111 MHz image, in mJy/beam.

Local_RMS_107_MHz
The local noise level in 103-111 MHz image, in mJy/beam.

Flux_107_MHz
The peak flux of the radio source in 103-111 MHz image, in mJy/beam.

Flux_107_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 103-111 MHz image, in mJy/beam.

Int_Flux_107_MHz
The integrated flux of the radio source in the 103-111 MHz image, in mJy.

Int_Flux_107_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 103-111 MHz image, in mJy.

A_107_MHz
The fitted semi-major axis of the radio source in the 103-111 MHz image, in arcseconds.

B_107_MHz
The fitted semi-minor axis of the radio source in the 103-111 MHz image, in arcseconds.

PA_107_MHz
The fitted position angle of the radio source in the 103-111 MHz image, in degrees.

Resid_Mean_107_MHz
The mean value of the data model for the radio source in the 103-111 MHz image, in mJy/beam.

Resid_Sd_107_MHz
The standard deviation of the data model for the radio source in the 103-111 MHz image, in mJy/beam.

A_PSF_107_MHz
The semi-major axis of the point spread function of the radio source in the 103-111 MHz image, in arcseconds.

B_PSF_107_MHz
The semi-minor axis of the point spread function of the radio source in the 103-111 MHz image, in arcseconds.

PA_PSF_107_MHz
The position angle of the point spread function of the radio source in the 103-111 MHz image, in degrees.

Bck_115_MHz
The background level in the 111-118 MHz image, in mJy/beam.

Local_RMS_115_MHz
The local noise level in the 111-118 MHz image, in mJy/beam.

Flux_115_MHz
The peak flux of the radio source in the 111-118 MHz image, in mJy/beam.

Flux_115_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 111-118 MHz image, in mJy/beam.

Int_Flux_115_MHz
The integrated flux of the radio source in the 111-118 MHz image, in mJy.

Int_Flux_115_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 111-118 MHz image, in mJy.

A_115_MHz
The fitted semi-major axis of the radio source in the 111-118 MHz image, in arcseconds.

B_115_MHz
The fitted semi-minor axis of the radio source in the 111-118 MHz image, in arcseconds.

PA_115_MHz
The fitted position angle of the radio source in the 111-118 MHz image, in degrees.

Resid_Mean_115_MHz
The mean value of the data model for the radio source in the 111-118 MHz image, in mJy/beam.

Resid_Sd_115_MHz
The standard deviation of the data model for the radio source in the 111-118 MHz image, in mJy/beam.

A_PSF_115_MHz
The semi-major axis of the point spread function of the radio source in the 111-118 MHz image, in arcseconds.

B_PSF_115_MHz
The semi-minor axis of the point spread function of the radio source in the 111-118 MHz image, in arcseconds.

PA_PSF_115_MHz
The position angle of the point spread function of the radio source in the 111-118 MHz image, in degrees.

Bck_122_MHz
The background level in the 118-126 MHz image, in mJy/beam.

Local_RMS_122_MHz
The local noise level in the 118-126 MHz image, in mJy/beam.

Flux_122_MHz
The peak flux of the radio source in the 118-126 MHz image, in mJy/beam.

Flux_122_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 118-126 MHz image, in mJy/beam.

Int_Flux_122_MHz
The integrated flux of the radio source in the 118-126 MHz image, in mJy.

Int_Flux_122_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 118-126 MHz image, in mJy.

A_122_MHz
The fitted semi-major axis of the radio source in the 118-126 MHz image, in arcseconds.

B_122_MHz
The fitted semi-minor axis of the radio source in the 118-126 MHz image, in arcseconds.

PA_122_MHz
The fitted semi-minor axis of the radio source in the 118-126 MHz image, in degrees.

Resid_Mean_122_MHz
The mean value of the data model for the radio source in the 118-126 MHz image, in mJy/beam.

Resid_Sd_122_MHz
The standard deviation of the data model for the radio source in the 118-126 MHz image, in mJy/beam.

A_PSF_122_MHz
The semi-major axis of the point spread function of the radio source in the 118-126 MHz image, in arcseconds.

B_PSF_122_MHz
The semi-minor axis of the point spread function of the radio source in the 118-126 MHz image, in arcseconds.

PA_PSF_122_MHz
The position angle of the point spread function of the radio source in the 118-126 MHz image, in degrees.

Bck_130_MHz
The background level in the 126-134 MHz image, in mJy/beam.

Local_RMS_130_MHz
The local noise level in the 126-134 MHz image, in mJy/beam.

Flux_130_MHz
The peak flux of the radio source in the 126-134 MHz image, in mJy/beam.

Flux_130_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 126-134 MHz image, in mJy/beam.

Int_Flux_130_MHz
The integrated flux of the radio source in the 126-134 MHz image, in mJy.

Int_Flux_130_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 126-134 MHz image, in mJy.

A_130_MHz
The fitted semi-major axis of the radio source in the 126-134 MHz image, in arcseconds.

B_130_MHz
The fitted semi-minor axis of the radio source in the 126-134 MHz image, in arcseconds.

PA_130_MHz
The fitted position angle of the radio source in the 126-134 MHz image, in degrees.

Resid_Mean_130_MHz
The mean value of the data model for the radio source in the 126-134 MHz image, in mJy/beam.

Resid_Sd_130_MHz
The standard deviation of the data model for the radio source in the 126-134 MHz image, in mJy/beam.

A_PSF_130_MHz
The semi-major axis of the point spread function of the radio source in the 126-134 MHz image, in arcseconds.

B_PSF_130_MHz
The semi-minor axis of the point spread function of the radio source in the 126-134 MHz image, in arcseconds.

PA_PSF_130_MHz
The position angle of the point spread function of the radio source in the 126-134 MHz image, in degrees.

Bck_143_MHz
The background level in the 139-147 MHz image, in mJy/beam.

Local_RMS_143_MHz
The local noise level in the 139-147 MHz image, in mJy/beam.

Flux_143_MHz
The peak flux of the radio source in the 139-147 MHz image, in mJy/beam.

Flux_143_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 139-147 MHz image, in mJy/beam.

Int_Flux_143_MHz
The integrated flux of the radio source in the 139-147 MHz image, in mJy.

Int_Flux_143_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 139-147 MHz image, in mJy.

A_143_MHz
The fitted semi-major axis of the radio source in the 139-147 MHz image, in arcseconds.

B_143_MHz
The fitted semi-minor axis of the radio source in the 139-147 MHz image, in arcseconds.

PA_143_MHz
The fitted position angle of the radio source in the 139-147 MHz image, in degrees.

Resid_Mean_143_MHz
The mean value of the data model for the radio source in the 139-147 MHz image, in mJy/beam.

Resid_Sd_143_MHz
The standard deviation of the data model for the radio source in the 139-147 MHz image, in mJy/beam.

A_PSF_143_MHz
The semi-major axis of the point spread function of the radio source in the 139-147 MHz image, in arcseconds.

B_PSF_143_MHz
The semi-minor axis of the point spread function of the radio source in the 139-147 MHz image, in arcseconds.

PA_PSF_143_MHz
The position angle of the point spread function of the radio source in the 139-147 MHz image, in degrees.

Bck_151_MHz
The background level in the 147-154 MHz image, in mJy/beam.

Local_RMS_151_MHz
The local noise level in the 147-154 MHz image, in mJy/beam.

Flux_151_MHz
The peak flux of the radio source in the 147-154 MHz image, in mJy/beam.

Flux_151_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 147-154 MHz image, in mJy/beam.

Int_Flux_151_MHz
The integrated flux of the radio source in the 147-154 MHz image, in mJy.

Int_Flux_151_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 147-154 MHz image, in mJy.

A_151_MHz
The fitted semi-major axis of the radio source in the 147-154 MHz image, in arcseconds.

B_151_MHz
The fitted semi-minor axis of the radio source in the 147-154 MHz image, in arcseconds.

PA_151_MHz
The fitted position angle of the radio source in the 147-154 MHz image, in degrees.

Resid_Mean_151_MHz
The mean value of the data model for the radio source in the 147-154 MHz image, in mJy/beam.

Resid_Sd_151_MHz
The standard deviation of the data model for the radio source in the 147-154 MHz image, in mJy/beam.

A_PSF_151_MHz
The semi-major axis of the point spread function of the radio source in the 147-154 MHz image, in arcseconds.

B_PSF_151_MHz
The semi-minor axis of the point spread function of the radio source in the 147-154 MHz image, in arcseconds.

PA_PSF_151_MHz
The position angle of the point spread function of the radio source in the 147-154 MHz image, in degrees.

Bck_158_MHz
The background level in the 154-162 MHz image, in mJy/beam.

Local_RMS_158_MHz
The local noise level in the 154-162 MHz image, in mJy/beam.

Flux_158_MHz
The peak flux of the radio source in the 154-162 MHz image, in mJy/beam.

Flux_158_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 154-162 MHz image, in mJy/beam.

Int_Flux_158_MHz
The integrated flux of the radio source in the 154-162 MHz image, in mJy.

Int_Flux_158_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 154-162 MHz image, in mJy.

A_158_MHz
The fitted semi-major axis of the radio source in the 154-162 MHz image, in arcseconds.

B_158_MHz
The fitted semi-minor axis of the radio source in the 154-162 MHz image, in arcseconds.

PA_158_MHz
The fitted position angle of the radio source in the 154-162 MHz image, in degrees.

Resid_Mean_158_MHz
The mean value of the data model for the radio source in the 154-162 MHz image, in mJy/beam.

Resid_Sd_158_MHz
The standard deviation of the data model for the radio source in the 154-162 MHz image, in mJy/beam.

A_PSF_158_MHz
The semi-major axis of the point spread function of the radio source in the 154-162 MHz image, in arcseconds.

B_PSF_158_MHz
The semi-minor axis of the point spread function of the radio source in the 154-162 MHz image, in arcseconds.

PA_PSF_158_MHz
The position angle of the point spread function of the radio source in the 154-162 MHz image, in degrees.

Bck_166_MHz
The background level in the 162-170 MHz image, in mJy/beam.

Local_RMS_166_MHz
The local noise level in the 162-170 MHz image, in mJy/beam.

Flux_166_MHz
The peak flux of the radio source in the 162-170 MHz image, in mJy/beam.

Flux_166_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 162-170 MHz image, in mJy/beam.

Int_Flux_166_MHz
The integrated flux of the radio source in the 162-170 MHz image, in mJy.

Int_Flux_166_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 162-170 MHz image, in mJy.

A_166_MHz
The fitted semi-major axis of the radio source in the 162-170 MHz image, in arcseconds.

B_166_MHz
The fitted semi-minor axis of the radio source in the 162-170 MHz image, in arcseconds.

PA_166_MHz
The fitted position angle of the radio source in the 162-170 MHz image, in degrees.

Resid_Mean_166_MHz
The mean value of the data model for the radio source in the 162-170 MHz image, in mJy/beam.

Resid_Sd_166_MHz
The standard deviation of the data model for the radio source in the 162-170 MHz image, in mJy/beam.

A_PSF_166_MHz
The semi-major axis of the point spread function of the radio source in the 162-170 MHz image, in arcseconds.

B_PSF_166_MHz
The semi-minor axis of the point spread function of the radio source in the 162-170 MHz image, in arcseconds.

PA_PSF_166_MHz
The position angle of the point spread function of the radio source in the 162-170 MHz image, in degrees.

Bck_174_MHz
The background level in the 170-177 MHz image, in mJy/beam.

Local_RMS_174_MHz
The local noise level in the 170-177 MHz image, in mJy/beam.

Flux_174_MHz
The peak flux of the radio source in the 170-177 MHz image, in mJy/beam.

Flux_174_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 170-177 MHz image, in mJy/beam.

Int_Flux_174_MHz
The integrated flux of the radio source in the 170-177 MHz image, in mJy.

Int_Flux_174_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 170-177 MHz image, in mJy.

A_174_MHz
The fitted semi-major axis of the radio source in the 170-177 MHz image, in arcseconds.

B_174_MHz
The fitted semi-minor axis of the radio source in the 170-177 MHz image, in arcseconds.

PA_174_MHz
The fitted position angle of the radio source in the 170-177 MHz image, in degrees.

Resid_Mean_174_MHz
The mean value of the data model for the radio source in the 170-177 MHz image, in mJy/beam.

Resid_Sd_174_MHz
The standard deviation of the data model for the radio source in the 170-177 MHz image, in mJy/beam.

A_PSF_174_MHz
The semi-major axis of the point spread function of the radio source in the 170-177 MHz image, in arcseconds.

B_PSF_174_MHz
The semi-minor axis of the point spread function of the radio source in the 170-177 MHz image, in arcseconds.

PA_PSF_174_MHz
The position angle of the point spread function of the radio source in the 170-177 MHz image, in degrees.

Bck_181_MHz
The background level in the 177-185 MHz image, in mJy/beam.

Local_RMS_181_MHz
The local noise level in the 177-185 MHz image, in mJy/beam.

Flux_181_MHz
The peak flux of the radio source in the 177-185 MHz image, in mJy/beam.

Flux_181_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 177-185 MHz image, in mJy/beam.

Int_Flux_181_MHz
The integrated flux of the radio source in the 177-185 MHz image, in mJy.

Int_Flux_181_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 177-185 MHz image, in mJy.

A_181_MHz
The fitted semi-major axis of the radio source in the 177-185 MHz image, in arcseconds.

B_181_MHz
The fitted semi-minor axis of the radio source in the 177-185 MHz image, in arcseconds.

PA_181_MHz
The fitted position angle of the radio source in the 177-185 MHz image, in degrees.

Resid_Mean_181_MHz
The mean value of the data model for the radio source in the 177-185 MHz image, in mJy/beam.

Resid_Sd_181_MHz
The standard deviation of the data model for the radio source in the 177-185 MHz image, in mJy/beam.

A_PSF_181_MHz
The semi-major axis of the point spread function of the radio source in the 177-185 MHz image, in arcseconds.

B_PSF_181_MHz
The semi-minor axis of the point spread function of the radio source in the 177-185 MHz image, in arcseconds.

PA_PSF_181_MHz
The position angle of the point spread function of the radio source in the 177-185 MHz image, in degrees.

Bck_189_MHz
The background level in the 185-193 MHz image, in mJy/beam.

Local_RMS_189_MHz
The local noise level in the 185-193 MHz image, in mJy/beam.

Flux_189_MHz
The peak flux of the radio source in the 185-193 MHz image, in mJy/beam.

Flux_189_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 185-193 MHz image, in mJy/beam.

Int_Flux_189_MHz
The integrated flux of the radio source in the 185-193 MHz image, in mJy.

Int_Flux_189_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 185-193 MHz image, in mJy.

A_189_MHz
The fitted semi-major axis of the radio source in the 185-193 MHz image, in arcseconds.

B_189_MHz
The fitted semi-minor axis of the radio source in the 185-193 MHz image, in arcseconds.

PA_189_MHz
The fitted position angle of the radio source in the 185-193 MHz image, in degrees.

Resid_Mean_189_MHz
The mean value of the data model for the radio source in the 185-193 MHz image, in mJy/beam.

Resid_Sd_189_MHz
The standard deviation of the data model for the radio source in the 185-193 MHz image, in mJy/beam.

A_PSF_189_MHz
The semi-major axis of the point spread function of the radio source in the 185-193 MHz image, in arcseconds.

B_PSF_189_MHz
The semi-minor axis of the point spread function of the radio source in the 185-193 MHz image, in arcseconds.

PA_PSF_189_MHz
The position angle of the point spread function of the radio source in the 185-193 MHz image, in degrees.

Bck_197_MHz
The background level in the 193-200 MHz image, in mJy/beam.

Local_RMS_197_MHz
The local noise level in the 193-200 MHz image, in mJy/beam.

Flux_197_MHz
The peak flux of the radio source in the 193-200 MHz image, in mJy/beam.

Flux_197_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 193-200 MHz image, in mJy/beam.

Int_Flux_197_MHz
The integrated flux of the radio source in the 193-200 MHz image, in mJy.

Int_Flux_197_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 193-200 MHz image, in mJy.

A_197_MHz
The fitted semi-major axis of the radio source in the 193-200 MHz image, in arcseconds.

B_197_MHz
The fitted semi-minor axis of the radio source in the 193-200 MHz image, in arcseconds.

PA_197_MHz
The fitted position angle of the radio source in the 193-200 MHz image, in degrees.

Resid_Mean_197_MHz
The mean value of the data model for the radio source in the 193-200 MHz image, in mJy/beam.

Resid_Sd_197_MHz
The standard deviation of the data model for the radio source in the 193-200 MHz image, in mJy/beam.

A_PSF_197_MHz
The semi-major axis of the point spread function of the radio source in the 193-200 MHz image, in arcseconds.

B_PSF_197_MHz
The semi-minor axis of the point spread function of the radio source in the 193-200 MHz image, in arcseconds.

PA_PSF_197_MHz
The position angle of the point spread function of the radio source in the 193-200 MHz image, in degrees.

Bck_204_MHz
The background level in the 200-208 MHz image, in mJy/beam.

Local_RMS_204_MHz
The local noise level in the 200-208 MHz image, in mJy/beam.

Flux_204_MHz
The peak flux of the radio source in the 200-208 MHz image, in mJy/beam.

Flux_204_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 200-208 MHz image, in mJy/beam.

Int_Flux_204_MHz
The integrated flux of the radio source in the 200-208 MHz image, in mJy.

Int_Flux_204_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 200-208 MHz image, in mJy.

A_204_MHz
The fitted semi-major axis of the radio source in the 200-208 MHz image, in arcseconds.

B_204_MHz
The fitted semi-minor axis of the radio source in the 200-208 MHz image, in arcseconds.

PA_204_MHz
The fitted position angle of the radio source in the 200-208 MHz image, in degrees.

Resid_Mean_204_MHz
The mean value of the data model for the radio source in the 200-208 MHz image, in mJy/beam.

Resid_Sd_204_MHz
The standard deviation of the data model for the radio source in the 200-208 MHz image, in mJy/beam.

A_PSF_204_MHz
The semi-major axis of the point spread function of the radio source in the 200-208 MHz image, in arcseconds.

B_PSF_204_MHz
The semi-minor axis of the point spread function of the radio source in the 200-208 MHz image, in arcseconds.

PA_PSF_204_MHz
The position angle of the point spread function of the radio source in the 200-208 MHz image, in degrees.

Bck_212_MHz
The background level in the 208-216 MHz image, in mJy/beam.

Local_RMS_212_MHz
The local noise level in the 208-216 MHz image, in mJy/beam.

Flux_212_MHz
The peak flux of the radio source in the 208-216 MHz image, in mJy/beam.

Flux_212_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 208-216 MHz image, in mJy/beam.

Int_Flux_212_MHz
The integrated flux of the radio source in the 208-216 MHz image, in mJy.

Int_Flux_212_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 208-216 MHz image, in mJy.

A_212_MHz
The fitted semi-major axis of the radio source in the 208-216 MHz image, in arcseconds.

B_212_MHz
The fitted semi-minor axis of the radio source in the 208-216 MHz image, in arcseconds.

PA_212_MHz
The fitted position angle of the radio source in the 208-216 MHz image, in degrees.

Resid_Mean_212_MHz
The mean value of the data model for the radio source in the 208-216 MHz image, in mJy/beam.

Resid_Sd_212_MHz
The standard deviation of the data model for the radio source in the 208-216 MHz image, in mJy/beam.

A_PSF_212_MHz
The semi-major axis of the point spread function of the radio source in the 208-216 MHz image, in arcseconds.

B_PSF_212_MHz
The semi-minor axis of the point spread function of the radio source in the 208-216 MHz image, in arcseconds.

PA_PSF_212_MHz
The position angle of the point spread function of the radio source in the 208-216 MHz image, in degrees.

Bck_220_MHz
The background level in the 216-223 MHz image, in mJy/beam.

Local_RMS_220_MHz
The local noise level in the 216-223 MHz image, in mJy/beam.

Flux_220_MHz
The peak flux of the radio source in the 216-223 MHz image, in mJy/beam.

Flux_220_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 216-223 MHz image, in mJy/beam.

Int_Flux_220_MHz
The integrated flux of the radio source in the 216-223 MHz image, in mJy.

Int_Flux_220_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 216-223 MHz image, in mJy.

A_220_MHz
The fitted semi-major axis of the radio source in the 216-223 MHz image, in arcseconds.

B_220_MHz
The fitted semi-minor axis of the radio source in the 216-223 MHz image, in arcseconds.

PA_220_MHz
The fitted position angle of the radio source in the 216-223 MHz image, in degrees.

Resid_Mean_220_MHz
The mean value of the data model for the radio source in the 216-223 MHz image, in mJy/beam.

Resid_Sd_220_MHz
The standard deviation of the data model for the radio source in the 216-223 MHz image, in mJy/beam.

A_PSF_220_MHz
The semi-major axis of the point spread function of the radio source in the 216-223 MHz image, in arcseconds.

B_PSF_220_MHz
The semi-minor axis of the point spread function of the radio source in the 216-223 MHz image, in arcseconds.

PA_PSF_220_MHz
The position angle of the point spread function of the radio source in the 216-223 MHz image, in degrees.

Bck_227_MHz
The background level in the 223-231 MHz image, in mJy/beam.

Local_RMS_227_MHz
The local noise level in the 223-231 MHz image, in mJy/beam.

Flux_227_MHz
The peak flux of the radio source in the 223-231 MHz image, in mJy/beam.

Flux_227_MHz_Error
The RMS uncertainty in the fit for the peak flux of the radio source in the 223-231 MHz image, in mJy/beam.

Int_Flux_227_MHz
The integrated flux of the radio source in the 223-231 MHz image, in mJy.

Int_Flux_227_MHz_Error
The RMS uncertainty in the fit for the integrated flux of the radio source in the 223-231 MHz image, in mJy.

A_227_MHz
The fitted semi-major axis of the radio source in the 223-231 MHz image, in arcseconds.

B_227_MHz
The fitted semi-minor axis of the radio source in the 223-231 MHz image, in arcseconds.

PA_227_MHz
The fitted position angle of the radio source in the 223-231 MHz image, in degrees.

Resid_Mean_227_MHz
The mean value of the data model for the radio source in the 223-231 MHz image, in mJy/beam.

Resid_Sd_227_MHz
The standard deviation of the data model for the radio source in the 223-231 MHz image, in mJy/beam.

A_PSF_227_MHz
The semi-major axis of the point spread function of the radio source in the 223-231 MHz image, in arcseconds.

B_PSF_227_MHz
The semi-minor axis of the point spread function of the radio source in the 223-231 MHz image, in arcseconds.

PA_PSF_227_MHz
The position angle of the point spread function of the radio source in the 223-231 MHz image, in degrees.

Alpha
The fitted spectral index (Alpha) of the radio source over the GLEAM bandwidth (72-231 MHz). This is calculated for the 245,470 (75%) radio sources which have a non-negative flux density measurement in every sub-band using a weighted least-squares approach.

Alpha_Error
The error in the fitted spectral index (Alpha) of the radio source over the GLEAM bandwidth (72-231 MHz).

Chi_Squared
The reduced chi² statistic for the spectral index fit.

Int_Fluxfit200_MHz
The fitted 200-MHz integrated flux density, in mJy.

Int_Fluxfit200_MHz_Error
The error in the fitted 200-MHz integrated flux density, in mJy.

Contact Person

Questions regarding the GLEAMEGCAT database table can be addressed to the HEASARC Help Desk.

Page Author: Browse Software Development Team
Last Modified: Monday, 16-Sep-2024 17:28:04 EDT