2014A&A...563A.118V


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.08CEST02:56:03

2014A&A...563A.118V - Astronomy and Astrophysics, volume 563A, 118-118 (2014/3-1)

Searching for star-forming dwarf galaxies in the Antlia cluster.

VADUVESCU O., KEHRIG C., BASSINO L.P., SMITH CASTELLI A.V. and CALDERON J.P.

Abstract (from CDS):

The formation and evolution of dwarf galaxies in clusters need to be understood, and this requires large aperture telescopes. In this sense, we selected the Antlia cluster to continue our previous work in the Virgo, Fornax, and Hydra clusters and in the Local Volume (LV). Because of the scarce available literature data, we selected a small sample of five blue compact dwarf (BCD) candidates in Antlia for observation. Using the Gemini South and GMOS camera, we acquired the Hα imaging needed to detect star-forming regions in this sample. With the long-slit spectroscopic data of the brightest seven knots detected in three BCD candidates, we derived their basic chemical properties. Using archival VISTA VHS survey images, we derived KS magnitudes and surface brightness profile fits for the whole sample to assess basic physical properties. FS90-98, FS90-106, and FS90-147 are confirmed as BCDs and cluster members, based on their morphology, KS surface photometry, oxygen abundance, and velocity redshift. FS90-155 and FS90-319 did not show any Hα emission, and they could not be confirmed as dwarf cluster star-forming galaxies. Based on our data, we studied some fundamental relations to compare star forming dwarfs (BCDs and dIs) in the LV and in the Virgo, Fornax, Hydra, and Antlia clusters. Star-forming dwarfs in nearby clusters appear to follow same fundamental relations in the near infrared with similar objects in the LV, specifically the size-luminosity and the metallicity-luminosity, while other more fundamental relations could not be checked in Antlia due to lack of data.

Abstract Copyright:

Journal keyword(s): galaxies: dwarf - galaxies: fundamental parameters - galaxies: evolution - galaxies: photometry - galaxies: starburst - galaxies: star formation

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 - 2020
#notes
1 ACO S 373 ClG 03 38 30 -35 27.3           ~ 1538 0
2 NAME HYA SUPERCL SCG 08 57.9 +03 10           ~ 152 0
3 LEDA 83019 GiG 10 28 34.0 -35 27 39   17.0       ~ 8 0
4 LEDA 83026 GiG 10 28 50.4 -35 09 36   18.2       ~ 7 0
5 NGC 3258 BiC 10 28 53.588 -35 36 19.98   12.50 11.72 10.86   ~ 169 0
6 LEDA 83062 GiG 10 29 26.3 -35 00 53   17.1       ~ 3 0
7 2MASX J10293482-3502424 GiG 10 29 34.823 -35 02 42.43   16.7       ~ 4 0
8 ACO S 636 ClG 10 29 41.0957 -35 19 32.908           ~ 197 0
9 NGC 3268 BiC 10 30 00.655 -35 19 31.83   12.57 11.77 10.68   ~ 140 0
10 2MASX J10320765-3502188 GiG 10 32 07.650 -35 02 18.84   15.4       ~ 4 0
11 CD-34 6792 PM* 10 32 13.6185042385 -35 37 41.710291605   12.84 11.84     F:wl: 125 0
12 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 774 1
13 2MASX J12103572+1145386 GiG 12 10 35.7595267945 +11 45 38.931730462   14.9       ~ 56 0
14 NAME NGC 4168 Group GrG 12 12.0 +13 24           ~ 57 0
15 MCG+01-31-030 GiP 12 15 18.322 +05 45 40.28   14.9       ~ 75 0
16 NAME Virgo W GrG 12 20.0 +05 48   6.3       ~ 77 0
17 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5824 0
18 NAME HYA-CEN SUPERCL SCG 13 14 -33.3           ~ 129 0
19 NAME Local Group GrG ~ ~           ~ 6970 0

    Equat.    Gal    SGal    Ecl

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2020.07.08-02:56:03

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