2014A&A...566A..32F


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.10CEST02:47:17

2014A&A...566A..32F - Astronomy and Astrophysics, volume 566A, 32-32 (2014/6-1)

WINGS-SPE. III. Equivalent width measurements, spectral properties, and evolution of local cluster galaxies.

FRITZ J., POGGIANTI B.M., CAVA A., MORETTI A., VARELA J., BETTONI D., COUCH W.J., D'ONOFRIO M., DRESSLER A., FASANO G., KJAERGAARD P., MARZIANI P., MOLES M. and OMIZZOLO A.

Abstract (from CDS):

Cluster galaxies are the ideal sites to look at when studying the influence of the environment on the various aspects of the evolution of galaxies, such as the changes in their stellar content and morphological transformations. In the framework of wings, the WIde-field Nearby Galaxy-cluster Survey, we have obtained optical spectra for ∼6000 galaxies selected in fields centred on 48 local (0.04<z<0.07) X-ray selected clusters to tackle these issues. By classifying the spectra based on given spectral lines, we investigate the frequency of the various spectral types as a function of both the clusters' properties and the galaxies' characteristics. In this way, using the same classification criteria adopted for studies at higher redshift, we can consistently compare the properties of the local cluster population to those of their more distant counterparts. We describe a method that we have developed to automatically measure the equivalent width of spectral lines in a robust way, even in spectra with a non optimal signal-to-noise ratio. This way, we can derive a spectral classification reflecting the stellar content, based on the presence and strength of the [OII] and Hδ lines. After a quality check, we are able to measure 4381 of the ∼6000 originally observed spectra in the fields of 48 clusters, of which 2744 are spectroscopically confirmed cluster members. The spectral classification is then analysed as a function of galaxies' luminosity, stellar mass, morphology, local density, and host cluster's global properties and compared to higher redshift samples (MORPHS and EDisCS). The vast majority of galaxies in the local clusters population are passive objects, being also the most luminous and massive. At a magnitude limit of MV< -18, galaxies in a post-starburst phase represent only ∼11% of the cluster population, and this fraction is reduced to ∼5% at MV< -19.5, which compares to the 18% at the same magnitude limit for high-z clusters. ``Normal'' star-forming galaxies (e(c)) are proportionally more common in local clusters. The relative occurrence of post-starbursts suggests a very similar quenching efficiency in clusters at redshifts in the 0 to ∼1 range. Furthermore, more important than the global environment, the local density seems to be the main driver of galaxy evolution in local clusters at least with respect to their stellar populations content.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - galaxies: evolution - galaxies: stellar content - methods: data analysis

VizieR on-line data: <Available at CDS (J/A+A/566/A32): wings_ew.dat>

Simbad objects: 51

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Number of rows : 51

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ACO 32 ClG 00 26 56 -09 06.4           ~ 5 0
2 ACO 119 ClG 00 56 16.8 -01 15 00           ~ 517 2
3 ACO 151 ClG 01 08 52.3 -15 25 01           ~ 182 1
4 ACO 376 ClG 02 45 48 +36 51.6           B8.5 146 1
5 ACO 3128 ClG 03 30 34.6 -52 33 12           ~ 169 3
6 ACO 3158 ClG 03 42 39.6 -53 37 50           ~ 271 0
7 ACO 3266 ClG 04 31 11.9 -61 24 23           ~ 371 0
8 ACO 500 ClG 04 38 55.0 -22 05 55           ~ 77 0
9 ACO 3376 ClG 06 01 42.1521 -39 59 06.227           ~ 270 0
10 ACO 3395 ClG 06 27 31.1 -54 23 58           ~ 179 0
11 ACO 754 ClG 09 08 50.1 -09 38 12           ~ 631 1
12 ACO 957 ClG 10 13 38.42 -00 55 32.6           ~ 192 2
13 ACO 970 ClG 10 17 34.3 -10 42 01           ~ 81 0
14 WINGS J103833.76-085623.3 EmG 10 38 33.758 -08 56 23.24           ~ 4 0
15 WINGS J103834.09-085719.2 EmG 10 38 34.092 -08 57 19.38           ~ 4 0
16 WINGS J103835.89-085031.5 SyG 10 38 35.903 -08 50 31.72           ~ 4 0
17 WINGS J103843.03-085602.8 EmG 10 38 43.0487233328 -08 56 03.452793373           ~ 4 0
18 2MASX J10384828-0843000 EmG 10 38 48.285 -08 43 00.04           ~ 6 0
19 WINGS J103851.34-083738.8 SyG 10 38 51.3355818234 -08 37 39.144223537           ~ 3 0
20 WINGS J103857.45-085004.6 EmG 10 38 57.456 -08 50 04.89           ~ 3 0
21 WINGS J103901.91-084229.6 G 10 39 01.916 -08 42 29.76           ~ 3 0
22 WINGS J103905.66-085608.3 EmG 10 39 05.647 -08 56 08.20           ~ 3 0
23 WINGS J103915.58-083903.6 G 10 39 15.580 -08 39 03.56           ~ 3 0
24 WINGS J103916.50-085447.6 G 10 39 16.517 -08 54 47.56           ~ 3 0
25 WINGS J103920.18-083428.7 SyG 10 39 20.195 -08 34 28.91           ~ 3 0
26 WINGS J103920.96-084402.3 EmG 10 39 20.962 -08 44 02.32           ~ 3 0
27 WINGS J103921.21-082823.9 EmG 10 39 21.223 -08 28 23.84           ~ 3 0
28 WINGS J103922.27-084945.3 EmG 10 39 22.258 -08 49 45.52           ~ 3 0
29 WINGS J103924.32-083214.7 EmG 10 39 24.315 -08 32 14.81           ~ 3 0
30 WINGS J103924.75-084053.8 GiC 10 39 24.751 -08 40 53.79           ~ 3 0
31 WINGS J103924.79-083011.3 GiC 10 39 24.799 -08 30 11.30           ~ 3 0
32 WINGS J103925.05-084201.6 EmG 10 39 25.066 -08 42 01.69           ~ 3 0
33 WINGS J103928.74-085701.4 LIN 10 39 28.754 -08 57 01.47           ~ 3 0
34 ACO 1069 ClG 10 39 54.3 -08 36 40           ~ 106 1
35 ACO 3490 ClG 11 45 19.6 -34 25 59           ~ 44 1
36 ACO 3497 ClG 12 00 03 -31 23.7           ~ 33 0
37 ACO 1631 ClG 12 52 50.6 -15 25 37           ~ 164 1
38 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 332 1
39 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4208 2
40 ACO 3556 ClG 13 24 06.2 -31 39 38           ~ 138 0
41 ACO 3560 ClG 13 32 23.7 -33 08 21           ~ 120 1
42 ACO 1795 ClG 13 49 00.5 +26 35 07           ~ 1154 0
43 ACO 1983 ClG 14 52 44.0 +16 44 46           ~ 235 1
44 ZwCl 1810+4949 ClG 18 11 00.1 +49 54 40     14.8     ~ 48 0
45 ACO 3809 ClG 21 46 57.5 -43 54 06           ~ 85 0
46 ACO 2382 ClG 21 51 57.2984 -15 36 48.067           ~ 111 0
47 ACO 2399 ClG 21 57 27.64 -07 48 12.9           ~ 163 0
48 ACO 2415 ClG 22 05 25.0 -05 35 23           ~ 108 1
49 ACO 2457 ClG 22 35 40.30 +01 31 33.6           ~ 120 0
50 ZwCl 2307+0713 ClG 23 10 26.6 +07 35 13           ~ 27 0
51 ACO 2626 ClG 23 36 31.0 +21 09 36           ~ 211 0

    Equat.    Gal    SGal    Ecl

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2020.07.10-02:47:17

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