NGC 253

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Basic data :
NGC 253 -- Seyfert 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: SyG (), Rad (Cul,1Jy,...), G (Ref,AGC,...), AGN (Ref,[VV2000c],...), X (2E,1ES,...), IR (IRAS,PSCz,...), gam (1FGL,2FGL,...), GiG ([CHM2007]), EmG (SINGG), cm (AT20G), HI (HIPASS) 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] : coordinates error major axis, minor axis (in mas at epoch defined in your output options), position angle (in degrees North to East of the specified coordinate frame) 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) : 00 47 33.134 -25 17 19.68 (Infrared) [ ] B 2006AJ....131.1163S 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] : coordinates error major axis, minor axis (in mas at epoch defined in your output options), position angle (in degrees North to East of the specified coordinate frame) 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 FK5 coord. (ep=J2000 eq=2000) : 00 47 33.134 -25 17 19.68 [ ] 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] : coordinates error major axis, minor axis (in mas at epoch defined in your output options), position angle (in degrees North to East of the specified coordinate frame) 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) : 00 45 05.75 -25 33 41.7 [ ] 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] : coordinates error major axis, minor axis (in mas at epoch defined in your output options), position angle (in degrees North to East of the specified coordinate frame) 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) : 097.3638 -87.9645 [ ] 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) 258.8 [~] / z(emission) 0.000864 [~] / cz 258.91 [~]    (Rad) C 2004MNRAS.350.1195M 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: SAB(s)c D 2015MNRAS.446..943V 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) (incl) : inclination (in units of 15° from 0 to 7) (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): 20.953 5.029 51 (IR) 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 (6) : B (AB) 8.03 [0.03] C 2014MNRAS.445..881C R (AB) 6.94 [0.03] C 2014MNRAS.445..881C I 8.1 [~] D 2005MNRAS.361...34D J 4.814 [0.016] C 2006AJ....131.1163S H 4.088 [0.016] C 2006AJ....131.1163S K 3.772 [0.017] C 2006AJ....131.1163S	SIMBAD with radius arcmin Interactive AladinLite view 2MASS DSS SDSSXMMIRACIRISGALEX VizieR photometry viewer    within radius 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 253	HIPASS J0047-25	PKS 0045-25	WMAP J0047-2515
AGC 20535	INTREF 36	PKS J0047-2517	WMAP J0047-2514
AT20G J004733-251717	IRAS 00450-2533	PKS 0045-255	WMAP J0047-2513
Cul 0045-255	IRAS F00450-2533	PMN J0047-2517	WMAP J0047-2516
Cul 0045-25	1Jy 0045-25	PSCz Q00450-2533	[CAB95] IRAS F00450-2533
6dFGS gJ004733.1-251719	1Jy 0045-255	RAFGL 5038	[CHM2007] LDC 26 J004733.13-2517196
DUGRS 474-001	LEDA 2789	RBS 112	[DML87] 570
2E 184	2MASX J00473313-2517196	RX J004731-25175	[M98c] 004505.7-253340
2E 0045.1-2533	MCG-04-03-009	RX J0047.5-2517	[NKB95] N0253
1ES 0045-25.5	MRC 0045-255	1RXS J004733.3-251722	[VV2000c] J004733.2-251717
ESO 474-29	MSH 00-2-22	SGC 004507-2533.9	[VV2003c] J004733.2-251717
ESO-LV 474-0290	NAME Silver Coin	SINGG HIPASS J0047-25	[VV2006c] J004733.2-251717
1FGL J0047.3-2512	NAME Sculptor Filament	UGCA 13	[VV2010c] J004733.2-251717
2FGL J0047.0-2516	NAME Scl Filament	VLSS J0047.5-2517	[VV98c] J004733.2-251717
3FGL J0047.5-2516	NVSS J004733-251717	WISH B0045.1-2533
GLXY G095.1-88.0+344	OHIO B -275	WMAP 62

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References (2640 between 1850 and 2017) Simbad bibliographic survey began in 1950 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system). Follow new references on this object

number of references only bibcodes reference summary number of references by 1st author number of references by year number of references by journal from: to:

Measurements (7 types) :

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : NGC 253

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