Homogeneity of stellar populations in early-type galaxies with different X-ray properties

被引：6
|
作者：
Kodama, T
Matsushita, K
机构：
[1] Univ Durham, Dept Phys, Durham DH1 3LE, England
[2] Univ Tokyo, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan
[3] Tokyo Metropolitan Univ, Dept Phys, Hachioji, Tokyo 1920397, Japan
来源：
ASTROPHYSICAL JOURNAL | 2000年 / 539卷 / 01期
关键词：
galaxies : elliptical and lenticular; cD; galaxies : evolution; galaxies : formation; galaxies : ISM; galaxies : stellar content;
D O I：
10.1086/309231
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have found that the stellar populations of early-type galaxies are homogeneous with no significant difference in color or Mg-2 index, despite the dichotomy between X-ray-extended early-type galaxies and X-ray-compact ones. Since the X-ray properties reflect the potential gravitational structure and, hence, the process of galaxy formation, the homogeneity of the stellar populations implies that the formation of stars in early-type galaxies predates the epoch when the dichotomy of the potential structure was established.
引用
收藏
页码：149 / 154
页数：6
相关论文
共 50 条
  • [1] X-ray scaling properties of early-type galaxies
    O'Sullivan, E
    Ponman, TJ
    Collins, RS
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 340 (04) : 1375 - 1399
  • [2] Stellar populations in early-type galaxies
    Buson, LM
    Capaccioli, M
    ULTRAVIOLET ASTROPHYSICS BEYOND THE IUE FINAL ARCHIVE, 1998, 413 : 529 - 536
  • [3] The X-ray emission properties and the dichotomy in the central stellar cusp shapes of early-type galaxies
    Pellegrini, S
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2005, 364 (01) : 169 - 178
  • [4] PROPERTIES OF THE X-RAY EMITTING GAS IN EARLY-TYPE GALAXIES
    CANIZARES, CR
    FABBIANO, G
    TRINCHIERI, G
    ASTROPHYSICAL JOURNAL, 1987, 312 (02): : 503 - 513
  • [5] X-Ray Properties of Early-Type Galaxies as Observed with ASCA
    Astrophys J, 1 (133):
  • [6] The effects of stellar dynamics on the X-ray emission of flat early-type galaxies
    Negri, Andrea
    Ciotti, Luca
    Pellegrini, Silvia
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 439 (01) : 823 - 844
  • [7] X-ray properties of early-type galaxies as observed with ASCA
    Matsumoto, H
    Koyama, K
    Awaki, H
    Tsuru, T
    Loewenstein, M
    Matsushita, K
    ASTROPHYSICAL JOURNAL, 1997, 482 (01): : 133 - 142
  • [8] Stellar populations in field early-type galaxies
    Annibali, F.
    Bressan, A.
    Rampazzo, R.
    Zeilinger, W.
    Danese, L.
    FROM STARS TO GALAXIES: BUILDING THE PIECES TO BUILD UP THE UNIVERSE, 2007, 374 : 469 - +
  • [9] Young stellar populations in early-type galaxies
    Bruzual, G
    STAR FORMATION IN EARLY-TYPE GALAXIES, 1999, 163 : 3 - 16
  • [10] Stellar Populations in Field Early-Type Galaxies
    Annibali, F.
    Bressan, A.
    Rampazzo, R.
    Panuzzo, P.
    Zeilinger, W.
    Danese, L.
    NEW QUESTS IN STELLAR ASTROPHYSICS II: ULTRAVIOLET PROPERTIES OF EVOLVED STELLAR POPULATIONS, 2009, : 67 - +
12345