MASS DISTRIBUTION IN THE CENTRAL FEW PARSECS OF OUR GALAXY

被引：20

作者：

Oh, Seungkyung ^{[1
,2
]}

Kim, Sungsoo S. ^{[1
,3
]}

Figer, Donald F. ^{[3
]}

机构：

[1] Kyung Hee Univ, Dept Astron & Space Sci, Yongin 446701, Kyungki Do, South Korea

[2] Univ Bonn, Argelander Inst Astron, D-53121 Bonn, Germany

[3] Rochester Inst Technol, Chester F Carlos Ctr Imaging Sci, Rochester, NY 14623 USA

来源：

JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY | 2009年 / 42卷 / 02期

关键词：

Galaxy: center; Galaxy: structure; Galaxy: kinematics and dynamics; SUPERMASSIVE BLACK-HOLE; GALACTIC-CENTER; STAR-FORMATION; STELLAR ORBITS; MILKY-WAY; DYNAMICAL FRICTION; RADIAL-VELOCITIES; CLUSTER; DISK;

D O I：

10.5303/JKAS.2009.42.2.017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We estimate the enclosed mass profile in the central 10 pc of the Milky Way by analyzing the infrared photometry and the velocity observations of dynamically relaxed stellar population ill the, Galactic center. HST/NICMOS and Gemini Adaptive Optics images in the archive are used to obtain the number density profile, and proper motion and radial velocity data were compiled from the literature to find the velocity dispersion profile assuming a, spherical symmetry and velocity isotropy. Front these data, we calculate the the, enclosed mass and density profiles in the central 10 pc of the Galaxy using the Jeans equation. Our improved estimates can better describe the exact, evolution of the molecular clouds and star clusters falling down to the Galactic center, and constrain the star formation history of the inner part of the Galaxy.

引用

页码：17 / 26

页数：10

共 27 条

[1] The distribution of stars near the supermassive black hole in the Galactic center [J].

Alexander, T .

ASTROPHYSICAL JOURNAL, 1999, 527 (02) :835-850

[2] HCN and HCO+ observations of the galactic circumnuclear disk [J].

Christopher, MH ;

Scoville, NZ ;

Stolovy, SR ;

Yun, MS .

ASTROPHYSICAL JOURNAL, 2005, 622 (01) :346-365

[3] An extended star formation history for the Galactic center from Hubble Space Telescope NICMOS observations [J].

Figer, DF ;

Rich, RM ;

Kim, SS ;

Morris, M ;

Serabyn, E .

ASTROPHYSICAL JOURNAL, 2004, 601 (01) :319-339

[4] High-precision stellar radial velocities in the galactic center [J].

Figer, DF ;

Gilmore, D ;

Kim, SS ;

Morris, M ;

Becklin, EE ;

McLean, IS ;

Gilbert, AM ;

Graham, JR ;

Larkin, JE ;

Levenson, NA ;

Teplitz, HI .

ASTROPHYSICAL JOURNAL, 2003, 599 (02) :1139-1156

[5] The dark mass concentration in the central parsec of the Milky Way [J].

Genzel, R ;

Thatte, N ;

Krabbe, A ;

Kroker, H ;

TacconiGarman, LE .

ASTROPHYSICAL JOURNAL, 1996, 472 (01) :153-+

[6] Stellar dynamics in the Galactic Centre: proper motions and anisotropy [J].

Genzel, R ;

Pichon, C ;

Eckart, A ;

Gerhard, OE ;

Ott, T .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2000, 317 (02) :348-374

[7] The galactic center HeI stars: Remains of a dissolved young cluster? [J].

Gerhard, O .

ASTROPHYSICAL JOURNAL, 2001, 546 (01) :L39-L42

[8] MEASURING DISTANCE AND PROPERTIES OF THE MILKY WAY'S CENTRAL SUPERMASSIVE BLACK HOLE WITH STELLAR ORBITS [J].

Ghez, A. M. ;

Salim, S. ;

Weinberg, N. N. ;

Lu, J. R. ;

Do, T. ;

Dunn, J. K. ;

Matthews, K. ;

Morris, M. R. ;

Yelda, S. ;

Becklin, E. E. ;

Kremenek, T. ;

Milosavljevic, M. ;

Naiman, J. .

ASTROPHYSICAL JOURNAL, 2008, 689 (02) :1044-1062

[9] MONITORING STELLAR ORBITS AROUND THE MASSIVE BLACK HOLE IN THE GALACTIC CENTER [J].

Gillessen, S. ;

Eisenhauer, F. ;

Trippe, S. ;

Alexander, T. ;

Genzel, R. ;

Martins, F. ;

Ott, T. .

ASTROPHYSICAL JOURNAL, 2009, 692 (02) :1075-1109

[10] NEUTRAL GAS IN THE CENTRAL 2 PARSECS OF THE GALAXY [J].

JACKSON, JM ;

GEIS, N ;

GENZEL, R ;

HARRIS, AI ;

MADDEN, S ;

POGLITSCH, A ;

STACEY, GJ ;

TOWNES, CH .

ASTROPHYSICAL JOURNAL, 1993, 402 (01) :173-184

← 1 2 3 →