ARGOS - II. The Galactic bulge survey

被引：104

作者：

Freeman, K. ^{[1
]}

Ness, M. ^{[1
]}

Wylie-de-Boer, E. ^{[1
]}

Athanassoula, E. ^{[2
]}

Bland-Hawthorn, J. ^{[3
]}

Asplund, M. ^{[1
]}

Lewis, G. ^{[3
]}

Yong, D. ^{[1
]}

Lane, R. ^{[4
]}

Kiss, L. ^{[3
,5
,6
]}

Ibata, R. ^{[7
]}

机构：

[1] Australian Natl Univ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia

[2] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France

[3] Univ Sydney, Sch Phys A28, Sydney Inst Astron, Sydney, NSW 2006, Australia

[4] Univ Concepcion, Dept Astron, Concepcion, Chile

[5] Konkoly Observ Budapest, MTA CFSK, H-1121 Budapest, Hungary

[6] ELTE Gothard Lendulet Res Grp, H-9700 Szombathely, Hungary

[7] Univ Strasbourg, CNRS, Astron Observ, F-67000 Strasbourg, France

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2013年 / 428卷 / 04期

基金：

美国国家航空航天局; 美国国家科学基金会; 澳大利亚研究理事会;

关键词：

Galaxy: bulge; Galaxy: evolution; Galaxy: formation; Galaxy: kinematics and dynamics; stars: abundances; SPLIT RED CLUMP; MILKY-WAY; CHEMICAL SIMILARITIES; STELLAR PARAMETERS; ABUNDANCE ANALYSIS; OPEN CLUSTERS; GIANT BRANCH; STARS; SPECTRA; METALLICITY;

D O I：

10.1093/mnras/sts305

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe the motivation, field locations and stellar selection for the Abundances and Radial velocity Galactic Origins Survey (ARGOS) spectroscopic survey of 28 000 stars in the bulge and inner disc of the Milky Way galaxy across latitudes of b = -5 degrees to -10 degrees. The primary goal of this survey is to constrain the formation processes of the bulge and establish whether it is predominantly a merger or instability remnant. From the spectra (R = 11 000), we have measured radial velocities and determined stellar parameters, including metallicities and [alpha/Fe] ratios. Distances were estimated from the derived stellar parameters and about 14 000 stars are red giants within 3.5 kpc of the Galactic Centre. In this paper, we present the observations and analysis methods. Subsequent papers (III and IV) will discuss the stellar metallicity distribution and kinematics of the Galactic bulge and inner disc, and the implications for the formation of the bulge.

引用

页码：3660 / 3670

页数：11

共 55 条

[1] The effective temperature scale of giant stars (F0-K5) -: II.: Empirical calibration of Teff versus colours and [Fe/H] [J].