Markarian ivo://nasa.heasarc/markarian NASA/GSFC HEASARC Markarian et al. 2026-06-12 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Galaxy 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 &lt; 16.0). Up to the middle of 1987 redshifts were measured for 1459 out of 1469 objects in the catalog. 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 &#39;Markarian Catalog&#39; which was based on the original galaxy lists of Markarian et al. (&lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/VII/61A"&gt;CDS catalog VII/61A&lt;/a&gt;). This is a service provided by NASA HEASARC . 1989SoSAO..62....5M https://heasarc.gsfc.nasa.gov/W3Browse/all/markarian.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=markarian& GET text/xml 180 99999 true 18.45870415 -14.84624762 0.25 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=markarian GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_markarian&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GALAXY CATALOG 0.25 Infrared Optical public markarian First Byurakan Survey (Markarian) Catalog of UV-Excess Galaxies name Source Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable vmag V Magnitude mag phot.mag;em.opt.V double nullable major_axis Major Axis Diameter (arcsec) arcsec phys.angSize;src short nullable minor_axis Minor Axis Diameter (arcsec) arcsec phys.angSize;src short nullable redshift Redshift Corrected for Galaxy Rotation (Rotation Constant Q=300km/s) src.redshift double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable source_number Sequential Identification Number for Each Source in Catalog meta.id;src short nullable app_mag Apparent Magnitude from the CGCG mag phot.mag;em.opt double nullable hubble_type Morphological Type (dbl=Close Binaries) char nullable class Browse Object Classification src.class short nullable double_source_flag Flag Indicates Double Object; More Information about the 2nd Component in Notes meta.code char nullable flux_100um IRAS Flux at 100 Micron Jy phot.flux.density;em.IR.60-100um double nullable flux_60um IRAS Flux at 60 Micron Jy phot.flux.density;em.IR.30-60um double nullable flux_25um IRAS Flux at 25 Micron Jy phot.flux.density;em.IR.15-30um double nullable abs_mag Absolute Magnitude mag phys.magAbs;em.opt double nullable bv_color B-V Color Index mag phot.color;em.opt.B;em.opt.V double nullable app_mag_flag Flag [O] Indicates Magnitude Is Original Estimate of the Authors meta.code;phot.mag;em.opt char nullable lii Galactic Longitude degree pos.galactic.lon double nullable variability_flag Flag [v] Indicates Optical Variability meta.code;src.var char nullable ref_ubv_mags References for UBV Photometry meta.ref;phot.mag short nullable diaphragm_size Diaphragm Size; When There Are Several, the Largest One Is Presented (arcsec) arcsec instr.param;instr.fov short nullable flux_60um_limit Limit Flag [<] for IRAS Flux at 60 Micron meta.code;phot.flux.density;em.IR.15-30um char nullable ref_redshift Redshift Reference meta.ref;src.redshift short nullable galaxy_type Spectrum Type src.class char nullable flux_12um IRAS Flux at 12 Micron Jy phot.flux.density;em.IR.8-15um double nullable flux_25um_limit Limit Flag [<] for IRAS Flux at 25 Micron meta.code;phot.flux.density;em.IR.15-30um char nullable markarian_type Spectral Type src.class char nullable ub_color U-B Color Index mag phot.color;em.opt.U;em.opt.B double nullable bii Galactic Latitude degree pos.galactic.lat double nullable flux_100um_limit Limit Flag [<] for IRAS Flux at 100 Micron meta.code;phot.flux.density;em.IR.60-100um char nullable