2015ApJ...806L..31M

Query : 2015ApJ...806L..31M

2015ApJ...806L..31M - Astrophys. J., 806, L31 (2015/June-3)

IMF-metallicity: a tight local relation revealed by the CALIFA survey.

MARTIN-NAVARRO I., VAZDEKIS A., LA BARBERA F., FALCON-BARROSO J., LYUBENOVA M., VAN DE VEN G., FERRERAS I., SANCHEZ S.F., TRAGER S.C., GARCIA-BENITO R., MAST D., MENDOZA M.A., SANCHEZ-BLAZQUEZ P., GONZALEZ DELGADO R., WALCHER C.J. (The CALIFA Team)

Abstract (from CDS):

Variations in the stellar initial mass function (IMF) have been invoked to explain the spectroscopic and dynamical properties of early-type galaxies (ETGs). However, no observations have yet been able to disentangle the physical driver. We analyze here a sample of 24 ETGs drawn from the CALIFA survey, deriving in a homogeneous way their stellar population and kinematic properties. We find that the local IMF is tightly related to the local metallicity, becoming more bottom-heavy toward metal-rich populations. Our result, combined with the galaxy mass-metallicity relation, naturally explains previous claims of a galaxy mass-IMF relation, derived from non-IFU spectra. If we assume that–within the star formation environment of ETGs–metallicity is the main driver of IMF variations, a significant revision of the interpretation of galaxy evolution observables is necessary.

Abstract Copyright: ∼

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: formation - galaxies: fundamental parameters - galaxies: stellar content

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 1277	GiG	03 19 51.4854427512	+41 34 24.934439244		14.9				~	235	0

Query : 2015ApJ...806L..31M

Basic data :

NGC 1277 -- Galaxy towards a Group of Galaxies

G (2015ApJS,LEDA,...), GiC ([BM99],[CR71]), GiG (2007ApJ,[CHM2007]), rG ([MO2001b]), AG? (2020MNRAS), BH? (2013MNRAS), Opt (SDSS)

03 19 51.4854427512 +41 34 24.934439244 (Optical) [ 0.4892 0.4334 90 ] A 2020yCat.1350....0G

03 16 32.7845945171 +41 23 34.976092361 [ 0.4892 0.4334 90 ]

150.5496402389823 -13.2038625374643 [ 0.4892 0.4334 90 ]

0.602 -2.792 [0.688 0.606 90] A 2020yCat.1350....0G

V(km/s) 4997 [~] / z(spectroscopic) 0.01681 [~] / cz 5039.5 [~] (Opt) D 2018AJ....156..224J

2.493 [0.6522] A 2020yCat.1350....0G

S0a C 2020A&A...640A..30M

0.680 0.381 100 (NIR) C 2006AJ....131.1163S

B 14.9 [~] E ~

G 17.910990 [0.013634] C 2020yCat.1350....0G

J 10.931 [0.022] C 2006AJ....131.1163S

H 10.170 [0.024] C 2006AJ....131.1163S

K 9.813 [0.029] C 2006AJ....131.1163S

u (AB) 17.789 [0.014] D 2009ApJS..182..543A

g (AB) 15.571 [0.003] C 2009ApJS..182..543A

r (AB) 14.541 [0.002] C 2009ApJS..182..543A

i (AB) 14.065 [0.002] C 2009ApJS..182..543A

z (AB) 13.566 [0.003] C 2009ApJS..182..543A

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`NGC 1277`	`SDSS J031951.47+413424.8`	`[BM99] 274`	`[CR71] 37`
`LEDA 12434`	`UZC J031951.6+413425`	`[CG99] SA426-11`	`[MO2001b] J031951.6+413423.7`
`2MASX J03195148+4134242`	`Z 540-104`	`[CHM2007] HDC 219 J031951.48+4134242`	`[MRS2020] J031951.5+413425`
`MCG+07-07-064`	`Z 0316.6+4123`	`[CHM2007] LDC 224 J031951.48+4134242`	`[MRS2020] 701`

References (235 between 1850 and 2026) (Total 235)
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 1277

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NGC 1277 2MASX J03195148+4134242 SDSS J031951.47+413424.8

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