2003ApJ...588L..17F

Query : 2003ApJ...588L..17F

2003ApJ...588L..17F - Astrophys. J., 588, L17-L20 (2003/May-1)

The near-infrared Ca II triplet-σ relation for bulges of spiral galaxies.

FALCON-BARROSO J., PELETIER R.F., VAZDEKIS A. and BALCELLS M.

Abstract (from CDS):

We present measurements of the near-infrared Ca II triplet (CaT, CaT*), Paschen (PaT), and magnesium (Mg I) indices for a well-studied sample of 19 bulges of early to intermediate spiral galaxies. We find that both the CaT* and CaT indices decrease with central velocity dispersion σ with small scatter. This dependence is similar to that recently found by Cenarro for elliptical galaxies, implying a uniform CaT*-σ relation that applies to galaxies from ellipticals to intermediate-type spirals. The decrease of CaT and CaT* with σ contrasts with the well-known increase of another α-element index, Mg2, with σ. We discuss the role of Ca underabundance ([Ca/Fe]<0) and initial mass function variations in the onset of the observed relations.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Abundances - Galaxies: Bulges - Galaxies: Fundamental Parameters

Simbad objects: 19

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Number of rows : 19
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 5326 GiP 13 50 50.7086232072 +39 34 29.516857680   12.9   11.38   ~ 91 0
2 NGC 5389 GiG 13 56 06.2870964720 +59 44 31.363711692   13.2       ~ 81 0
3 NGC 5422 GiG 14 00 42.0190513968 +55 09 51.863031684   13.1       ~ 164 0
4 NGC 5443 Sy2 14 02 11.7987915648 +55 48 50.358916044   13.2       ~ 108 0
5 NGC 5475 GiG 14 05 12.4060318056 +55 44 30.694106112   13.4       ~ 107 0
6 NGC 5587 LIN 14 22 10.7116072992 +13 55 04.956410460   14.0       ~ 98 0
7 NGC 5689 GiP 14 35 29.7025058208 +48 44 29.759376048   12.7       ~ 132 0
8 NGC 5707 GiP 14 37 30.7766689296 +51 33 42.558357240   13.3       ~ 85 0
9 NGC 5719 GiG 14 40 56.3690411016 -00 19 05.854225080   13.10   12.061   ~ 187 2
10 NGC 5746 GiP 14 44 56.005 +01 57 17.06   12.3       ~ 375 0
11 NGC 5838 GiG 15 05 26.2447857696 +02 05 57.349108392   12.1   10.26   ~ 252 0
12 NGC 5854 GiG 15 07 47.6993537544 +02 34 07.059522288   13.1   11.23   ~ 155 0
13 NGC 5879 AGN 15 09 46.7271710112 +57 00 00.538947900   11.9       ~ 262 0
14 NGC 5965 SyG 15 34 02.3002830024 +56 41 08.509684740   13.4       ~ 133 0
15 NGC 6010 AG? 15 54 19.1553713880 +00 32 34.949952168   13.3       ~ 94 0
16 NGC 6504 AG? 17 56 05.7198487440 +33 12 30.466444032   13.4       ~ 53 0
17 NGC 7331 LIN 22 37 04.0506038088 +34 24 56.800076508 10.65 10.35 9.48     ~ 1284 2
18 NGC 7332 GiP 22 37 24.5373044952 +23 47 53.830708800   12.0       ~ 391 0
19 NGC 7457 AG? 23 00 59.9263288440 +30 08 41.764398792   11.04 11.87     ~ 459 0

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