2019MNRAS.487.3021A

Query : 2019MNRAS.487.3021A

2019MNRAS.487.3021A - Mon. Not. R. Astron. Soc., 487, 3021-3028 (2019/August-2)

Environmental effects on the UV upturn in local clusters of galaxies.

ALI S.S., BREMER M.N., PHILLIPPS S. and DE PROPRIS R.

Abstract (from CDS):

We explore the dependence of ultraviolet (UV) upturn colours in early-type cluster galaxies on the properties of their parent clusters (such as velocity dispersion and X-ray luminosity) and on the positions and kinematics of galaxies within them. We use a sample of 24 nearby clusters with highly complete spectroscopy and optical/infrared data to select a suitable sample of red-sequence galaxies, whose far-ultraviolet and NUV magnitudes we measure from archival GALEX data. Our results show that the UV upturn colour has no dependence on cluster properties and has the same range in all clusters. There is also no dependence on the projected position within clusters or on line-of-sight velocity. Therefore, our conclusion is that the UV upturn phenomenon is an intrinsic feature of cluster early-type galaxies, irrespective of their cluster environment.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: horizontal branch - galaxies: evolution - galaxies: formation

Simbad objects: 28

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Number of rows : 28
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 3 ClG 00 03 09 -27 53.3           ~ 9 0
2 ACO 2734 ClG 00 11 21.60 -28 51 16.6           ~ 156 0
3 ACO 2780 ClG 00 30 04.61 -29 27 27.6           ~ 16 0
4 ACO S 84 ClG 00 49 23.2 -29 31 33           ~ 89 0
5 ACO S 166 ClG 01 34 23 -31 35.7           ~ 7 0
6 ACO 3094 ClG 03 11 25.00 -26 55 52.2           ~ 64 0
7 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
8 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
9 ACO 930 ClG 10 07 01.32 -05 37 28.7           ~ 30 0
10 ACO 954 ClG 10 13 52.41 -00 07 15.1           ~ 65 0
11 ACO 957 ClG 10 14 02.35 -00 53 30.0           ~ 225 2
12 ACO 1139 ClG 10 58 01.63 +01 38 05.4           ~ 162 3
13 ACO 1189 ClG 11 11 13.26 +01 04 31.8           ~ 38 0
14 ACO 1238 ClG 11 22 05.37 +00 47 03.0           ~ 91 0
15 ACO 1236 ClG 11 22 36.77 +00 27 37.9           ~ 18 0
16 ACO 1364 ClG 11 43 39.67 -01 44 41.8           ~ 61 0
17 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
18 ACO 1620 ClG 12 50 03.89 -01 32 26.7           ~ 54 0
19 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
20 ACO 1663 ClG 13 02 52.55 -02 31 04.0           ~ 112 0
21 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
22 ACO 1692 ClG 13 12 15.30 -00 55 54.3           ~ 30 0
23 ACO 1750 ClG 13 30 50.44 -01 51 27.1           ~ 190 2
24 ACO 3880 ClG 22 27 49.5 -30 34 40           ~ 104 2
25 ACO S 1043 ClG 22 36 27.96 -24 20 30.8           ~ 14 0
26 ACO 4013 ClG 23 31 51 -35 16.4           ~ 10 0
27 ACO 2660 ClG 23 45 18 -25 58.3           ~ 39 0
28 ACO 4053 ClG 23 54 45.43 -27 40 52.6           ~ 39 0

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