AN AXISYMMETRICAL DISTRIBUTION FUNCTION FOR THE GALACTIC BULGE

被引：23
|
作者：
KUIJKEN, K
机构：
[1] HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138
[2] UNIV BASQUE COUNTRY,DEPT THEORET PHYS,BILBAO,SPAIN
来源：
ASTROPHYSICAL JOURNAL | 1995年 / 446卷 / 01期
关键词：
CELESTIAL MECHANICS; STELLAR DYNAMICS; GALAXY; HALO; KINEMATICS AND DYNAMICS; STRUCTURE; METHODS; NUMERICAL;
D O I：
10.1086/175778
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We describe a method for parameterizing two-integral distribution functions, based on triangular tessellations of the integral plane. We apply the method to the axisymmetric isotropic rotator model for the Galactic bulge of Kent (1992), and compute the projected distributions of radial velocities and proper motions expected for this model in order to allow a detailed comparison with observations. This type of analysis yields complete model predictions, significantly stronger than the velocity moments that can be calculated from the Jeans equations. In spite of strong evidence from surface photometry and from study of the gas kinematics that the Galactic bulge is not axisymmetric, the stellar kinematics in Baade's window art very similar to those of an isotropic oblate rotator.
引用
收藏
页码：194 / 202
页数：9
相关论文
共 50 条
  • [1] The RR Lyrae distribution in the Galactic bulge
    Roberto Capuzzo-Dolcetta
    Astrophysics and Space Science, 2025, 370 (3)
  • [2] The distribution of Mira variables in the galactic bulge
    Matsunaga, Noriyuki
    Mapping the Galaxy and Nearby Galaxies, 2008, : 351 - 351
  • [3] The initial mass function in the galactic bulge
    Zoccali, M
    INITIAL MASS FUNCTION 50 YEARS LATER, 2005, 327 : 95 - 100
  • [4] The luminosity function and initial mass function in the Galactic bulge
    Holtzman, JA
    Watson, AM
    Baum, WA
    Grillmair, CJ
    Groth, EJ
    Light, RM
    Lynds, R
    O'Neil, EJ
    ASTRONOMICAL JOURNAL, 1998, 115 (05): : 1946 - 1957
  • [5] THE METALLICITY DISTRIBUTION OF STARS IN THE GALACTIC BULGE AND DISK
    KOPPEN, J
    ARIMOTO, N
    ASTROPHYSICS AND SPACE SCIENCE, 1989, 156 (1-2) : 47 - 50
  • [6] Measuring the remnant mass function of the Galactic bulge
    Gould, A
    ASTROPHYSICAL JOURNAL, 2000, 535 (02): : 928 - 931
  • [7] Understanding the Velocity Distribution of the Galactic Bulge with APOGEE and Gaia
    Zhou, Yingying
    Li, Zhao-Yu
    Simion, Iulia T.
    Shen, Juntai
    Mao, Shude
    Liu, Chao
    Jian, Mingjie
    Fernandez-Trincado, Jose G.
    ASTROPHYSICAL JOURNAL, 2021, 908 (01):
  • [8] The Galactic Bulge
    Gerhard, O
    XVTH IAP MEETING DYNAMICS OF GALAXIES: FROM THE EARLY UNIVERSE TO THE PRESENT, 2000, 197 : 201 - 204
  • [9] The Galactic Bulge
    Rich, R. M.
    FIFTY YEARS OF WIDE FIELD STUDIES IN THE SOUTHERN HEMISPHERE: RESOLVED STELLAR POPULATIONS OF THE GALACTIC BULGE AND MAGELLANIC CLOUDS, 2015, 491 : 59 - 71
  • [10] METALLICITY DISTRIBUTION AND ABUNDANCE RATIOS IN THE STARS OF THE GALACTIC BULGE
    MATTEUCCI, F
    BROCATO, E
    ASTROPHYSICAL JOURNAL, 1990, 365 (02): : 539 - 543
12345