2012MNRAS.425.1057K

Query : 2012MNRAS.425.1057K

2012MNRAS.425.1057K - Mon. Not. R. Astron. Soc., 425, 1057-1067 (2012/September-2)

Near-infrared spectroscopy of stellar populations in nearby spiral galaxies.

KOTILAINEN J.K., HYVONEN T., REUNANEN J. and IVANOV V.D.

Abstract (from CDS):

We present high spatial resolution, medium spectral resolution near-infrared (NIR) H- and K-band long-slit spectroscopy for a sample of 29 nearby (z < 0.01) inactive spiral galaxies, to study the composition of their NIR stellar populations. These spectra contain a wealth of diagnostic stellar absorption lines, e.g., MgI 1.575µm, SiI 1.588µm, CO (6–3) 1.619µm, MgI 1.711µm, NaI 2.207µm, CaI 2.263µm and the 12CO and 13CO bandheads longward of 2.29µm. We use NIR absorption features to study the stellar population and star formation properties of the spiral galaxies along the Hubble sequence, and we produce the first high spatial resolution NIR HK-band template spectra for low-redshift spiral galaxies along the Hubble sequence. These templates will find applications in a variety of galaxy studies. The strength of the absorption lines depends on the luminosity and/or temperature of stars and, therefore, spectral indices can be used to trace the stellar population of galaxies. The entire sample indicates that the evolved red stars completely dominate the NIR spectra, and that the contribution from hot young stars is insignificant.

Based on observations collected at the European Southern Observatory (ESO), Chile, programmes 068.B-0653 and 076.B-0714.


Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society 2012 RAS

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: spiral - galaxies: stellar content - infrared: galaxies

Simbad objects: 30

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Number of rows : 30
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 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
2 NGC 1617 GiP 04 31 39.534 -54 36 08.16   11.35 10.26 9.80   ~ 104 0
3 NGC 2090 GiG 05 47 01.8557074752 -34 15 01.679264784 12.17 11.70 11.20 10.43 11.0 ~ 206 1
4 NGC 2196 EmG 06 12 09.6565312104 -21 48 21.667049928   11.98   10.69 11.4 ~ 111 0
5 NGC 2380 GiG 07 23 54.749 -27 31 44.62   12.52   10.77   ~ 57 0
6 NGC 2502 EmG 07 55 51.5485027272 -52 18 24.605256888   13.09   11.09 11.9 ~ 61 0
7 NGC 2566 GiG 08 18 45.608 -25 29 58.27   11.81   10.50 11.2 ~ 102 0
8 NGC 2613 Sy2 08 33 22.841 -22 58 25.21   11.29 10.42 9.75 10.5 ~ 180 0
9 NGC 2640 AG? 08 37 24.624 -55 07 25.47           ~ 51 0
10 NGC 2775 AG? 09 10 20.1334093488 +07 02 16.874157048   11.417 10.481 9.920 8.994 ~ 377 0
11 NGC 2781 Sy2 09 11 27.5157906744 -14 49 00.191638668   12.5   11.38 12.0 ~ 78 0
12 NGC 2855 EmG 09 21 27.4894926552 -11 54 34.337758068   13.24 12.23 10.77   ~ 97 0
13 NGC 2935 Sy2 09 36 44.8527810504 -21 07 41.560449096   11.84 10.04 10.44 11.6 ~ 134 1
14 NGC 3056 Sy2 09 54 32.8538928504 -28 17 53.628683496   12.61   11.00 12.0 ~ 75 0
15 NGC 3637 GiP 11 20 39.5662467840 -10 15 26.289737460   13   11.97   ~ 64 0
16 NGC 3715 Sy1 11 31 32.3339180976 -14 13 53.055095988   13   12.61   ~ 62 0
17 NGC 3810 GiC 11 40 58.7615811624 +11 28 15.808680696   11.4       ~ 351 2
18 NGC 3892 GiG 11 48 01.0277916720 -10 57 43.632054432   12.21   10.99   ~ 72 0
19 NGC 4179 GiG 12 12 52.1118346920 +01 17 58.926287976   12.8       ~ 179 0
20 NGC 4546 Sy2 12 35 29.4931619736 -03 47 35.383858656 11.89 11.30 10.32     ~ 230 1
21 NGC 4751 GiG 12 52 50.7492182112 -42 39 35.537977836   12.99   11.26   ~ 93 0
22 NGC 4856 GiG 12 59 21.2433153888 -15 02 31.292291292   11   10.72   ~ 85 0
23 NGC 4958 Sy1 13 05 48.8957905464 -08 01 12.999361656   12.10   10.77   ~ 109 0
24 NGC 5054 Sy1 13 16 58.488 -16 38 05.46   11.3   10.36 10.7 ~ 203 1
25 IC 4214 AG? 13 17 42.6918273984 -32 06 06.103910340   12.15 11.65 10.72 13.84 ~ 121 1
26 NGC 5101 Sy1 13 21 46.242 -27 25 49.87   11.26 10.47 9.87 10.5 ~ 187 0
27 NGC 5134 EmG 13 25 18.5250908808 -21 08 03.066281880   12.11   10.77 11.3 ~ 127 0
28 NGC 5507 EmG 14 13 19.8600321120 -03 08 56.000082660   13.30 12.46     ~ 120 0
29 NGC 5612 GiG 14 34 01.274 -78 23 14.85   13.01 12.14 11.39   ~ 44 0
30 NGC 5806 Sy2 15 00 00.4088018736 +01 53 28.779594792   12.40 11.70 10.94 11.6 ~ 305 1

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