Mrk 231

Basic data :
Mrk 231 -- Seyfert 1 Galaxy Origin of the objects types : (Ref) Object type as listed in the reference "Ref" (acronym) Object type linked to the acronym according to the original reference () Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases Other object types: Sy1 (), Rad (2020A&A,BWE,...), G (2015ApJS,Mrk,...), AGN (2020MNRAS,[HB91],...), QSO (2016A&A,QSO,...), IR (IRAS,ISOSS,...), MIR (AKARI,WISEA,...), X (2XMM,[A2001]), * (Gaia), Mas (OH), gam (INTREF), Opt (SDSS) Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference ICRS coord. (ep=J2000) : 12 56 14.2341182928 +56 52 25.238373852 (Optical) [ 0.0099 0.0106 90 ] A 2020yCat.1350....0G Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference FK4 coord. (ep=B1950 eq=1950) : 12 54 05.0049284859 +57 08 38.305913520 [ 0.0099 0.0106 90 ] Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference Gal coord. (ep=J2000) : 121.6108345340636 +60.2422626734372 [ 0.0099 0.0106 90 ] Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode" pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr) pm-dec : mu-dec (expressed in the ICRS system in mas/yr) [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg) quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the proper motion reference Proper motions mas/yr : 0.002 -0.041 [0.013 0.014 90] A 2020yCat.1350....0G Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode" value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity) [error] : error of the corresponding value displayed before (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown) quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the value's origin Radial velocity / Redshift / cz : V(km/s) 12040 [~] / z(emission) 0.041 [~] / cz 12291 [~]    (Opt) D 2016ApJ...818..113N Syntax of parallax is : 'value quality [error] bibcode' value : parallax value quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) [error] : mean error bibcode : bibcode of the parallax reference Parallaxes (mas): 0.0121 [0.0132] A 2020yCat.1350....0G Syntax of morphological type is : mtype quality bibcode mtype : Hubble morphological class (spirals, ellipticals, etc) quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the morphological type reference Morphological type: SA C 2019MNRAS.488..590B Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode" maj-axis : major axis size (arc minutes) min-axis : minor axis size (arc minutes) angle : orientation angle (in degrees) (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam) quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the angular size reference Angular size (arcmin): 1.10 0.78 10 (Opt) D 2003A&A...412...45P Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode" filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z (System) : may be AB (default is Vega) flux-value : value of flux or magnitude [error] : error value quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality) MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4]) bibcode : bibcode of the flux reference Fluxes (11) : B 14.68 [~] D 2010A&A...518A..10V V 13.84 [~] D 2010A&A...518A..10V G 13.538867 [0.003406] C 2020yCat.1350....0G J 11.024 [0.020] C 2006AJ....131.1163S H 9.889 [0.019] C 2006AJ....131.1163S K 8.813 [0.017] C 2006AJ....131.1163S u (AB) 15.212 [0.005] C 2009ApJS..182..543A g (AB) 14.539 [0.003] C 2009ApJS..182..543A r (AB) 13.714 [0.008] C 2009ApJS..182..543A i (AB) 12.985 [0.005] C 2009ApJS..182..543A z (AB) 13.058 [0.004] C 2009ApJS..182..543A	SIMBAD within arcmin ', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay points in this preview 2MASS DSS SDSSXMMIRACIRISGALEX All (CDSPortal) Send to within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR. The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding. Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).
Some important notes on this object about identifications and objects associations. notes: Contains OH megamaser (2005Ap.....48..355K) Contains H2O maser (2006A&A...450..933Z) See also Specfind radio flux densities.

Mrk 231	IRAS 12540+5708	TGSSADR J125613.9+565220	[CAB95] IRAS F12540+5708
AKARI-IRC-V1 J1256142+565225	ISOSS J12562+5652	TXS 1254+571	[DML87] 663
Anon 1254+57	IVS B1254+571	UGC 8058	[HB91] 1254+571
BWE 1254+5708	JVAS J1256+5652	UZC J125614.3+565225	[HMI96] 1254+5708
6C 125407+570842	JVAS B1254+571	VIPS J12562+5652	[PGB2011] J1256+5652
7C 125404.70+570833.00	JVAS J1256+568	VLSSr J125613.1+565215	[SLK2004] 753
CGPG 1254.0+5709	LEDA 44117	VLSS J1256.2+5652	[VDD93] 175
CJ2 1254+571	2MASX J12561432+5652244	WB 1254+5708	[VV2000c] J125614.2+565225
CJF B1254+571	MCG+10-19-004	WISEA J125614.23+565225.3	[VV2003c] J125614.2+565225
CLASS J125614.2344+565225.234	NVSS J125614+565223	WISE J125614.24+565225.3	[VV2006c] J125614.2+565225
CRATES J125614+565220	OH 121.61+60.24	WN B1254.0+5708	[VV2010c] J125614.2+565225
FIRST J125614.2+565225	PSCz Q12540+5708	2XMM J125614.2+565224	[VV98c] J125614.2+565225
GB6 B1254+5708	QDOT B1254047+570839	ZW VII 490	[WTW94] 1254+571
87GB 125405.2+570847	QSO J1256+5652	Z 1254.0+5709	[WZX98] 12540+5708
ICRF J125614.2+565225	QSO B1254+571	Z 294-4	Gaia DR2 1577113301057089664
IERS B1254+571	RFC J1256+5652	Z 293-45	Gaia DR3 1577113301057089664
INTREF 531	SBSG 1254+571	[A2001] Mrk 231 14.3	Gaia DR1 1577113296762389888
IRAS F12540+5708	SDSS J125614.22+565225.2	[BDW2002] q1254+5708

References (1956 between 1850 and 2023) (Total 1956) Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system). Follow new references on this object

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External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : Mrk 231

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