2007MNRAS.376..157C

Query : 2007MNRAS.376..157C

2007MNRAS.376..157C - Mon. Not. R. Astron. Soc., 376, 157-172 (2007/March-3)

The strong transformation of spiral galaxies infalling into massive clusters at z ~ 0.2.

CORTESE L., MARCILLAC D., RICHARD J., BRAVO-ALFARO H., KNEIB J.-P., RIEKE G., COVONE G., EGAMI E., RIGBY J., CZOSKE O. and DAVIES J.

Abstract (from CDS):

We describe two peculiar galaxies falling into the massive galaxy clusters Abell1689 (z ~ 0.18) and Abell2667 (z ~ 0.23), respectively. Hubble Space Telescope (HST) images show extraordinary trails composed of bright blue knots (-16.5 < M < -11.5mag) and stellar streams associated with each of these systems. Combining optical, near- and mid-infrared and radio observations we prove that while both galaxies show similar extended trails of star-forming knots, their recent star formation histories are different. One (~L*) is experiencing a strong burst of star formation, appearing as a rare example of a luminous infrared cluster galaxy. In comparison, the other (~0.1L*) has recently ceased its star formation activity. Our model suggests that the morphologies and star formation in these galaxies have been influenced by the combined action of tidal interaction (likely with the cluster potential) and of ram pressure with the intracluster medium (ICM). These results can be used to gain more insights to the origin of S0s, dwarf and ultracompact dwarf (UCD) cluster galaxies.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): galaxies: clusters: individual: A1689 - galaxies: clusters: individual: A2667 - galaxies: evolution - galaxies: high-redshift - galaxies: interactions - galaxies: peculiar

Nomenclature: Figs 1-2, Table 1: [CMR2007] JHHMMSS+DDMMSS N=2.

CDS comments: Galaxy 131124-012040 = [GH91] 21, Galaxy 235144-260358 = APMUKS (BJ) B234908.95-262039.7

Simbad objects: 10

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Number of rows : 10
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 3310 AGN 10 38 45.85707 +53 30 11.8940   12.45 12.15     ~ 809 1
2 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
3 [GH91] 21 GiC 13 11 24.86 -01 20 39.9           ~ 5 0
4 LEDA 88746 GiC 13 11 25.3750804032 -01 20 36.943458468   19.48 18.06 17.32 16.72 ~ 19 0
5 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
6 ACO 2125 ClG 15 41 14.1 +66 15 57           ~ 124 1
7 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 732 2
8 Feige 110 HS* 23 19 58.3996844256 -05 09 56.171142864 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 673 1
9 ACO 2667 ClG 23 51 39.37 -26 05 02.7           ~ 190 0
10 2dFGRS TGS132Z144 G 23 51 44.03 -26 03 59.6   18.642   18.551   ~ 7 0

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