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MARKARIAN - First Byurakan Survey (Markarian) Catalog of UV-Excess Galaxies |
HEASARC Archive |
Overview
A catalog of galaxies with UV-continuum (Markarian galaxies) detected during the First Byurakan Survey (FBS) is presented. The purpose of the FBS was to search for peculiar faint extragalactic objects with UV-excess radiation and to study them. The procedure of observations and processing, the FBS areas, the object selection and classification criteria and also several selection effects are described in the reference. The catalog contains the following initial data on all the objects: the precise coordinates, visual magnitudes, angular sizes, redshifts and classification types. The observational results of slit spectra, UBV-photometry, IR-photometry (IRAS data), morphology and some other data are also included in the catalog. While compiling the catalog, the authors introduced some necessary corrections in the data of the earlier published lists on galaxies with UV-continuum excesses. In addition, the authors included the objects with numbers 1501-1515. In most cases, they are well-known Seyfert galaxies omitted by the authors in the lists, but detected on the plates. 48 objects from their lists are not included in the catalog, since they are either stars of our Galaxy or star projections on the galaxies. This catalog presents the largest homogeneous sample of AGN of different types on the northern sky for bright objects (apparent magnitude < 16.0). Up to the middle of 1987 redshifts were measured for 1459 out of 1469 objects in the catalog.Catalog Bibcode
1989SoSAO..62....5MReferences
The First Byurakan Survey. A catalogue of galaxies with UV-continuum
Markarian B.E., Lipovetsky V.A., Stepanian J.A., Erastova L.K.,
Shapovalova A.I.
<Comm. SAO (USSR) 62 (1989)>
=1989SoSAO..62....5M
Provenance
This table was created by the HEASARC in November 2009 based on the electronic version of the First Byurakan Survey (Markarian galaxies catalog) which was obtained from the CDS (their catalog VII/172 file table7.dat). It replaced an earlier version of the 'Markarian Catalog' which was based on the original galaxy lists of Markarian et al. (CDS catalog VII/61A).Deleted FBS/Markarian Objects
Number RA (1950) Dec m Type Ref Comments 959 0 40 33.9 39 32 49 15.1 s2e: 48 galaxy + star 351 0 55 13.5 28 7 14 16. s3e: 48 galaxy + star 574 1 42 2.3 11 27 30 16.5 sd1e: 45 star 362 1 45 7.7 23 24 47 14.5 s1e: 28 star 578 1 49 3.7 7 3 22 16. s2 45 star 371 2 45 13.8 - 1 7 47 16. s1 28 star 377 7 10 53.2 74 6 0 16. s1e: 28 star 80 7 39 36.0 64 54 1 17. d3e: 45 galaxy + star 381 7 49 34.3 58 22 50 17.5 s1 28 star 1213 8 11 35.3 - 0 13 5 15.3 s2e 47 galaxy + star 388 8 25 37.5 25 30 0 16. s1e 28 star, Ton 323, AT Cnc 1217 8 27 55.8 - 4 14 18 17. s1e: 47 galaxy + star 392 8 56 10.6 33 8 47 15. s1 28 star = G 047-018, WD 393 9 5 47.4 60 31 37 17. s1 28 star 107 9 16 59.6 71 45 22 14.7 d3e: = Mrk 20 396 9 21 11.7 35 29 43 15.5 s1e: 28 star 112 9 24 35.6 48 17 50 16.5 d3 48 galaxy + star 113 9 25 22.1 62 54 7 14.5 s2 43 star 1265 10 46 58.0 23 6 12 17. d1e: 52 galaxy + star 1278 11 1 56.7 39 4 19 17. s1e: 45 star 1290 11 17 22.9 - 5 34 35 15.5 sd3 99 galaxy + star 425 11 31 7.8 64 26 57 16. s1 45 star 643 11 53 45.0 17 41 39 16. sd3 52 stars, star + star 436 12 11 39.9 37 1 36 16. s2e 45 star 437 12 13 15.9 41 8 47 16. s1e: 45 star 1318 12 16 36.5 4 7 58 14.5 ds1e = Mrk 49 227 12 45 57.8 51 15 20 16. s3e: 52 star 228 12 46 26.2 42 9 29 16.5 s2 45 star 448 12 59 8.8 30 19 40 17. s1e: 45 star 252 13 18 14.4 55 39 40 17. s2 45 star 791 13 30 12.3 10 45 49 17. s3 52 galaxy + star 457 13 30 48.9 39 16 50 16. sd3 52 star 458 13 32 14.5 40 21 36 16. s2e 45 star 460 13 42 3.3 40 15 10 16. s1e: 45 star 488 13 59 25.1 52 6 51 15.4 sd2e: 52 galaxy + star 677 14 17 30.1 36 22 23 17. sd2e: 28 star 1491 14 37 6.4 3 43 59 16.5 d2e: 52 galaxy + star 690 15 44 31.4 18 52 38 16.5 sd1e: 28 star 495 16 2 3.7 26 12 44 15.5 s2e: 45 star 502 16 53 21.4 64 9 45 15.5 s3 52 galaxy + star 890 16 55 7.4 63 19 11 15.1 ds2 = Mrk 503 505 17 19 47.5 39 45 0 15.5 sd2 48 galaxy + star 511 21 7 42.1 - 1 48 45 15. s2 45 star 514 21 17 56.7 + 2 33 46 14.8 s2 G+ star 914 22 32 28.3 40 24 32 13.5 sd3e: 48 star = L H 233 525 23 1 39.3 1 28 32 17. * s3 52 star 320 23 17 36.0 26 49 57 16.5* s1 28 star 327 23 34 35.1 23 02 34 15.7 s2e 52 galaxy + star
Parameters
Source_Number
A unique identification number for each FBS galaxy.
Name
The FBS/Markarian galaxy source designation recommended by the
Dictionary of Nomenclature of Celestial Objects, using the prefix of 'Mrk'
and the source_number value. Many sources still use the prefix of 'Mkn' to
refer to these objects.
RA
The Right Ascension of the FBS/Markarian galaxy in the selected equinox.
This was given in (B?)1950 coordinates to a precision of 0.1 seconds of time
in the original CDS version of this table.
Dec
The Declination of the FBS/Markarian galaxy in the selected equinox.
This was given in (B?)1950 coordinates to a precision of 1 arcsecond
in the original CDS version of this table.
LII
The Galactic Longitude of the FBS/Markarian galaxy.
BII
The Galactic Latitude of the FBS/Markarian galaxy.
Redshift
The redshift of the FBS/Markarian galaxy corrected for the
Galaxy's rotation (with an assumed rotation constant Q of 300 km/s).
App_Mag
The apparent magnitude m of the FBS/Markarian galaxy as taken
from the Zwicky Catalog of Galaxies and Clusters of Galaxies (CGCG, Zwicky
et al. 1961-1968). For convenience, in controlling the data the authors
did not introduce corrections to apparent magnitudes for reduction into
other systems. When there were no values in CGCG, the original estimates of
the authors were presented. These latter values have been flagged with
values of app_mag_flag of 'O' in this table.
App_Mag_Flag
This flag parameter is set to 'O to indicate that the
quoted apparent magnitude is an original estimate of the authors rather
than being taken from the CGCG.
Abs_Mag
The absolute magnitude M of the FBS/Markarian galaxy, calculated
from the apparent magnitude m and the redshift z. In order to
calculate the absolute magnitudes M (the value of the Hubble constant
H of 75 km/s/Mpc is assumed), a correction for absorption in the Galaxy
A = 0.24 cosec (b) is introduced, where b is the Galactic Latitude. Thus,
the final expression is:
M = m - 43.0 - 5 log z - A
Markarian_Type
The spectral classification of the FBS/Markarian galaxy.
This was introduced in the original Markarian et al. papers and in some
cases the current authors have corrected the original papers when they had
new plates of better quality than the original ones. According to the ADC
documentation for the original version of the FBS/Markarian Catalog:
"The four basic types (s, sd, ds, and d) describe the general appearance of
the spectrum on the Schmidt plate, ranging respectively from sharp to diffuse.
Next is a code for the strength of the ultraviolet continuum, with 1 brightest
and 3 least bright. This part of the scheme changed over the course of the
survey: originally, 1 meant "strong" and 2 "moderate,"
with an intermediate classification of 12 (Mrk galaxies 1-70). The
codes 1, 2, and 3 imply similarity to stellar spectral types O-B0, B1-B3, and
B5-B8, respectively). At the end of the 'spectral' type there may appear an
'E' for emission lines or an 'E:' for possible emission lines."
Major_Axis
The major axis of the FBS/Markarian galaxy, in arcseconds.
The galaxy sizes were measured on the red POSS charts
and taken from the original Markarian lists of UV-galaxies.
Minor_Axis
The minor axis of the FBS/Markarian galaxy, in arcseconds.
The galaxy sizes were measured on the red POSS charts
and taken from the original Markarian lists of UV-galaxies.
Ref_Redshift
A code for the redshift reference. Though for many galaxies there are several
determinations of redshift, the authors present a single reference for their
value. As a rule, they give the most exact value. Note, that in their
publication series of spectral observation with the 6-m telescope (Markarian
et al., 1980a, b; 1983a; 1984a), the corrections for the Galaxy rotation were
calculated in the wrong way. But this catalog gives the corrected values. The
key to these reference codes is available at
https://cdsarc.cds.unistra.fr/ftp/cats/VII/172/refs.dat.gz.
Double_Source_Flag
This flag parameter is set to 'D' to indicate that this is a double object.
More information ia available about the 2nd component in the catalog notes
(https://cdsarc.cds.unistra.fr/ftp/cats/VII/172/notes.dat.gz).
Hubble_Type
The morphological description of the FBS/Markarian galaxy,
taken from the literature, (the Hubble
or Vaucouleurs classification) is presented, as a rule, for nearby and
bright galaxies according to Huchra (1977), de Vaucouleurs et al.
(1976), Nilson (1973), Mazarella and Balzano (1987). In some
cases, the description "dbl" is used for close binaries.
Galaxy_Type
The active galaxy type, as follows:
Sy1-Sy2 - Sy galaxy of the corresponding type;
Sy3 - LINER;
QSO - quasar;
BL - Bl Lacertides type;
SB - star-burst galaxies;
HII - extragalactic HII region;
e - emission spectrum galaxy;
a - absorption spectrum galaxy.
The two last notations have been used when there was
insufficient information about their spectra to properly classify them.
Diaphragm_Size
The diaphragm size is given, in arcseconds. When there were
several diaphragms used, the authors present the largest one
Vmag
The V magnitude of the FBS/Markarian galaxy. If there were several
data values, the authors give the most exact of these values.
BV_Color
The B-V color index of the FBS/Markarian galaxy. If there were
several data values, the authors give the most exact of these values.
UB_Color
The U-B color index of the FBS/Markarian galaxy. If there were
several data values, the authors give the most exact of these values.
Ref_UBV_Mags
The reference codes for the UBV photometry. The key to these reference codes
is available at https://cdsarc.cds.unistra.fr/ftp/cats/VII/172/refs.dat.gz.
Variability_Flag
This flag parameter is set to 'v' to indicate that optical
variability has been observed.
Flux_12um
The IRAS Version 1 flux density of the FBS/Markarian galaxy at
12 microns, in Janskies.
Flux_25um_Limit
This limit flag is set to '<' to indicate that the
corresponding parameter is an upper limit rather than a detection.
Flux_25um
The IRAS Version 1 flux density of the FBS/Markarian galaxy at
25 microns, in Janskies.
Flux_60um_Limit
This limit flag is set to '<' to indicate that the
corresponding parameter is an upper limit rather than a detection.
Flux_60um
The IRAS Version 1 flux density of the FBS/Markarian galaxy at
60 microns, in Janskies.
Flux_100um_Limit
This limit flag is set to '<' to indicate that the
corresponding parameter is an upper limit rather than a detection.
Flux_100um
The IRAS Version 1 flux density of the FBS/Markarian galaxy at
100 microns, in Janskies.
Class
The HEASARC Browse object classification of the FBS/Markarian
galaxy, based on the value of the galaxy_type parameter.
Contact Person
Questions regarding the MARKARIAN database table can be addressed to the HEASARC Help Desk.Page Author: Browse Software Development Team
Last Modified: Monday, 16-Sep-2024 17:30:53 EDT
- HEASARC Director: Dr. Andy Ptak
- NASA Official: Dr. Andy Ptak
- Web Curator: J.D. Myers
- Last Modified: 16-Sep-2024