other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
Query : 2006MNRAS.368..769E |
2006MNRAS.368..769E - Mon. Not. R. Astron. Soc., 368, 769-780 (2006/May-2)
The colour-magnitude relations of ClJ1226.9+3332, a massive cluster of galaxies at z = 0.89.
ELLIS S.C., JONES L.R., DONOVAN D., EBELING H. and KHOSROSHAHI H.G.
Abstract (from CDS):
The cluster has a low early-type fraction compared to nearby clusters, with only 33 per cent of the confirmed cluster members having types E or S0.
The early-type member galaxies form a clear red-sequence in all colours. The scatter and slope of the relations show no evolution compared to the equivalent Coma cluster relations, suggesting the stellar populations are already very old at z = 0.89. The normalization of the relations has been compared to models based on synthetic stellar populations (SSPs), and are most consistent with stellar populations forming at zf≳ 3.
Some galaxies of late-type morphology were found to lie on the red-sequence of the CMR, suggesting that they have very similar stellar populations to the early-type galaxies.
These results present a picture of a cluster in which the early-type galaxies are all old, but in which there must be future morphological transformation of galaxies to match the early-type fraction of nearby clusters. In order to preserve the tight CMR of early types seen in nearby clusters, the late-type galaxies must transform their colours, through the cessation of star formation, before the morphological transformation occurs. Such evolution is observed in the late types lying on the CMR.
Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS
Journal keyword(s): galaxies: clusters: individual: ClJ1226.9+3332 - galaxies: evolution
Simbad objects: 12
Number of rows : 12 |
N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | SA 92- | reg | 00 55 03.80 | +00 47 13.2 | ~ | 101 | 0 | |||||
2 | SA 95- | reg | 03 53 21.0 | -00 01 10 | ~ | 85 | 0 | |||||
3 | SA 98- | reg | 06 52 04.1 | -00 23 58 | ~ | 176 | 0 | |||||
4 | ClG J0848+4453 | ClG | 08 48 34.800 | +44 53 41.90 | ~ | 123 | 1 | |||||
5 | ClG J0849+4452 | ClG | 08 48 58.8 | +44 51 53 | ~ | 107 | 1 | |||||
6 | ACO 851 | ClG | 09 43 01.2 | +46 59 54 | 18.9 | ~ | 327 | 0 | ||||
7 | SA 101- | reg | 09 57 28.2 | -00 19 39 | ~ | 74 | 0 | |||||
8 | ClG 1054-03 | ClG | 10 57 00.2 | -03 37 27 | 22 | ~ | 454 | 0 | ||||
9 | ClG J1226+3332 | ClG | 12 26 57.7 | +33 32 50 | ~ | 215 | 0 | |||||
10 | ACO 1656 | ClG | 12 59 44.40 | +27 54 44.9 | ~ | 4796 | 2 | |||||
11 | * alf Lyr | dS* | 18 36 56.33635 | +38 47 01.2802 | 0.03 | 0.03 | 0.03 | 0.07 | 0.10 | A0Va | 2686 | 1 |
12 | SA 113- | reg | 21 40 58.9 | +00 27 43 | ~ | 58 | 0 |
To bookmark this query, right click on this link: simbad:objects in 2006MNRAS.368..769E and select 'bookmark this link' or equivalent in the popup menu