2001AJ....122.1861S

Query : 2001AJ....122.1861S

2001AJ....122.1861S - Astron. J., 122, 1861-1874 (2001/October-0)

Color separation of galaxy types in the Sloan Digital Sky Survey imaging data.

STRATEVA I., IVEZIC Z., KNAPP G.R., NARAYANAN V.K., STRAUSS M.A., GUNN J.E., LUPTON R.H., SCHLEGEL D., BAHCALL N.A., BRINKMANN J., BRUNNER R.J., BUDAVARI T., CSABAI I., CASTANDER F.J., DOI M., FUKUGITA M., GYORY Z., HAMABE M., HENNESSY G., ICHIKAWA T., KUNSZT P.Z., LAMB D.Q., McKAY T.A., OKAMURA S., RACUSIN J., SEKIGUCHI M., SCHNEIDER D.P., SHIMASAKU K. and YORK D.

Abstract (from CDS):

We study the optical colors of 147,920 galaxies brighter than g*=21, observed in five bands by the Sloan Digital Sky Survey (SDSS) over ∼100 deg² of high Galactic latitude sky along the celestial equator. The distribution of galaxies in the g*-r* versus u*-g* color-color diagram is strongly bimodal, with an optimal color separator of u*-r*=2.22. We use visual morphology and spectral classification of subsamples of 287 and 500 galaxies, respectively, to show that the two peaks correspond roughly to early- (E, S0, and Sa) and late-type (Sb, Sc, and Irr) galaxies, as expected from their different stellar populations. We also find that the colors of galaxies are correlated with their radial profiles, as measured by the concentration index and by the likelihoods of exponential and de Vaucouleurs' profile fits. While it is well known that late-type galaxies are bluer than early-type galaxies, this is the first detection of a local minimum in their color distribution. In all SDSS bands, the counts versus apparent magnitude relations for the two color types are significantly different and demonstrate that the fraction of blue galaxies increases toward the faint end.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Fundamental Parameters

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	NGC 4666	AGN	12 45 08.676	-00 27 42.88		11.7		11.5	10.7	~	421	1

Query : 2001AJ....122.1861S

Basic data :

NGC 4666 -- Active Galaxy Nucleus

GiP (), G (2015ApJS,6dFGS,...), Rad (GLEAM,MRC,...), HI (2022RAA,HIPASS,...), IR (IRAS,2MASSW,...), rG (2012A&A), AGN (2019MNRAS), EmG (SINGG), GiG ([CHM2007]), AG? (2020MNRAS), MIR (WISE), Opt (SDSS)

12 45 08.676 -00 27 42.88 (Infrared) [ ] C 2006AJ....131.1163S

12 42 34.845 -00 11 18.95 [ ]

299.538115 +62.368359 [ ]

V(km/s) 1540.5 [~] / z(emission) 0.005152 [~] / cz 1544.48 [~] (Rad) C 2004MNRAS.350.1195M

SAB C 2019MNRAS.488..590B

8.46148 2.57144 42 (Opt) B 2023ApJS..269....3M

B 11.7 [~] D 2005MNRAS.361...34D

R 11.5 [~] D 2005MNRAS.361...34D

I 10.7 [~] D 2005MNRAS.361...34D

J 8.195 [0.016] C 2006AJ....131.1163S

H 7.402 [0.016] C 2006AJ....131.1163S

K 7.055 [0.018] C 2006AJ....131.1163S

u (AB) 14.099 [0.004] C 2005AJ....129.1755A

g (AB) 10.8272 [0.0032] B 2023ApJS..269....3M

r (AB) 10.0420 [0.0039] B 2023ApJS..269....3M

i (AB) 10.786 [0.002] C 2005AJ....129.1755A

z (AB) 9.4018 [0.0048] B 2023ApJS..269....3M

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`NGC 4666`	`MCG+00-33-008`	`TGSSADR J124508.6-002746`	`[BEC2010] HRS 251`
`6dFGS gJ124508.6-002743`	`2MFGC 10050`	`UGC 7926`	`[CAB95] IRAS F12425-0011`
`GLEAM J124508-002747`	`MRC 1242-001`	`UZC J124508.0-002744`	`[CHM2007] HDC 720 J124508.67-0027428`
`HIPASS J1245-00`	`NVSS J124508-002747`	`VLSS J1245.1-0027`	`[CHM2007] LDC 904 J124508.67-0027428`
`IRAS F12425-0011`	`PMN J1245-0027`	`WALLABY J124508-002747`	`[HSN2016] J191.28-00.46`
`IRAS 12425-0011`	`PSCz Q12425-0011`	`WB 1242-0010`	`[M98c] 124235.1-001114`
`LEDA 42975`	`SDSS J124508.59-002742.7`	`WISE J124508.65-002743.4`	`[NLB95] f861g005`
`2MASSW J1245072-002740`	`SDSS J124508.60-002742.8`	`Z 15-15`	`[ZYW2022] FAST J124508-002750`
`2MASX J12450867-0027428`	`SINGG HIPASS J1245-00`	`Z 1242.6-0010`	`[ZYW2022] F50-1`

References (421 between 1850 and 2026) (Total 421)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Data at NED - NASA/IPAC Extragalactic Database : NGC 4666

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`NGC 4666`	`HIPASS J1245-00`	`IRAS F12425-0011`	`IRAS 12425-0011`	`2MASX J12450867-0027428`
`NVSS J124508-002747`	`PMN J1245-0027`	`SDSS J124508.59-002742.7`	`SDSS J124508.60-002742.8`	`UGC 7926`
`WISE J124508.65-002743.4`

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