NGC 4235

Basic data :
NGC 4235 -- 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: G (2015ApJS,EVCC,...), X (2012ApJS,2E,...), AGN ([HB91],[VV2000c],...), Sy1 (2013ApJS), QSO (QSO,[WTW94]), Rad (NVSS,[SMM2006b]), GiG ([CHM2007]), * (Gaia), gam (IGR), HI (2012MNRAS), NIR (2MASS), IR (IRAS), 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 17 09.8818997904 +07 11 29.673389004 (Optical) [ 0.0913 0.0631 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 14 36.7216421357 +07 28 09.460569826 [ 0.0913 0.0631 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) : 279.1815585763264 +68.4683535553111 [ 0.0913 0.0631 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 : -0.155 -0.272 [0.109 0.076 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) 2219 [~] / z(spectroscopic) 0.00743 [~] / cz 2227.5 [~]    (Opt) D 2017ApJ...850...74K 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): 0.1249 [0.104] 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: S 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): 2.243 0.628 50 (NIR) C 2006AJ....131.1163S 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 14.70 [~] D 2010A&A...518A..10V V 13.60 [~] D 2010A&A...518A..10V G 16.536842 [0.029826] C 2020yCat.1350....0G J 9.331 [0.017] C 2006AJ....131.1163S H 8.681 [0.020] C 2006AJ....131.1163S K 8.396 [0.028] C 2006AJ....131.1163S u (AB) 14.708 [0.005] C 2009ApJS..182..543A g (AB) 12.734 [0.002] C 2009ApJS..182..543A r (AB) 11.843 [0.002] C 2009ApJS..182..543A i (AB) 11.416 [0.002] C 2009ApJS..182..543A z (AB) 11.135 [0.002] 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!).

NGC 4235	2MFGC 9679	TIC 389347098	[SMM2006b] J121709.86+071129.7
2E 2637	NVSS B121436+072809	UGC 7310	[TDA2012] AGESVC1 305
2E 1214.6+0728	PBC J1217.1+0712	UZC J121709.9+071129	[VV2000c] J121709.9+071129
EVCC 270	QSO B1214+074	VCC 222	[VV2003c] J121709.9+071129
IC 3098	1RXP J121710.1+071135	2XMM J121709.8+071130	[VV2006c] J121709.9+071129
IGR J12172+0710	RX J1217.1+0711	Z 41-62	[VV2010c] J121709.9+071129
IRAS F12146+0728	1RXS J121710.0+071127	Z 1214.6+0728	[VV98c] J121709.9+071129
LEDA 39389	SDSS J121709.88+071129.6	[BAG2012] 184.2881+07.17577	[WTW94] 1214+074
2MASS J12170988+0711296	SDSS J121709.89+071129.6	[CHM2007] HDC 720 J121709.91+0711299	[YOF95] 55
2MASX J12170991+0711299	SWIFT J1217.3+0714	[CHM2007] LDC 904 J121709.91+0711299	[ZEH2003] RX J1217.1+0711 1
2MAXI J1217+073	SWIFT J1217.2+0711	[HB91] 1214+074	Gaia DR2 3901477613710183808
MCG+01-31-036	SWIFT J1217.2+0710	[LB2005] NGC 4235 X1	Gaia DR3 3901477613710183808

References (403 between 1850 and 2023) (Total 403) 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

Collections of Measurements

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : NGC 4235

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