The GALAH survey: scientific motivation

被引：658

作者：

De Silva, G. M. ^{[1
,2
]}

Freeman, K. C. ^{[3
]}

Bland-Hawthorn, J. ^{[2
]}

Martell, S. ^{[4
]}

de Boer, E. Wylie ^{[3
]}

Asplund, M. ^{[3
]}

Keller, S. ^{[3
]}

Sharma, S. ^{[2
]}

Zucker, D. B. ^{[5
,6
]}

Zwitter, T. ^{[7
]}

Anguiano, B. ^{[5
,6
]}

Bacigalupo, C. ^{[5
,6
]}

Bayliss, D. ^{[3
]}

Beavis, M. A. ^{[8
]}

Bergemann, M. ^{[9
]}

Campbell, S. ^{[10
]}

Cannon, R. ^{[1
]}

Carollo, D. ^{[5
,6
]}

Casagrande, L. ^{[3
]}

Casey, A. R. ^{[11
]}

Da Costa, G. ^{[3
]}

D'Orazi, V. ^{[5
,12
]}

Dotter, A. ^{[3
]}

Duong, L. ^{[3
]}

Heger, A. ^{[10
,13
,14
]}

Ireland, M. J. ^{[3
]}

Kafle, P. R. ^{[15
]}

Kos, J. ^{[7
]}

Lattanzio, J. ^{[10
]}

Lewis, G. F. ^{[2
]}

Lin, J. ^{[3
]}

Lind, K. ^{[16
]}

Munari, U. ^{[17
]}

Nataf, D. M. ^{[3
]}

O'Toole, S. ^{[1
]}

Parker, Q. ^{[5
,6
]}

Reid, W. ^{[5
,6
]}

Schlesinger, K. J. ^{[3
]}

Sheinis, A. ^{[1
]}

Simpson, J. D. ^{[5
,6
]}

Stello, D. ^{[2
]}

Ting, Y. -S. ^{[18
]}

Traven, G. ^{[7
]}

Watson, F. ^{[1
]}

Wittenmyer, R. ^{[4
]}

Yong, D. ^{[3
]}

Zerjal, M. ^{[7
]}

机构：

[1] Australian Astron Observ, N Ryde, NSW 1670, Australia

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

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

[4] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia

[5] Macquarie Univ, Dept Phys & Astron, Sydney, NSW 2109, Australia

[6] Macquarie Univ, Res Ctr Astron Astrophys & Astrophoton, Sydney, NSW 2109, Australia

[7] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia

[8] Univ So Queensland, Computat Engn & Sci Res Ctr, Toowoomba, Qld 4350, Australia

[9] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[10] Monash Univ, Sch Math Sci, Monash Ctr Astrophys, Clayton, Vic 3800, Australia

[11] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[12] Osserv Astron Padova, INAF, I-35122 Padua, Italy

[13] Michigan State Univ, Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA

[14] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[15] Univ Western Australia, ICRAR, Nedlands, WA 6009, Australia

[16] Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden

[17] Astron Observ Padova, INAF, I-36012 Asiago, VI, Italy

[18] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2015年 / 449卷 / 03期

基金：

澳大利亚研究理事会; 美国国家科学基金会; 美国国家航空航天局;

关键词：

Galaxy: stellar content; OLD OPEN CLUSTERS; RED GIANT BRANCH; MILKY-WAY; STELLAR POPULATIONS; CHEMICAL EVOLUTION; GLOBULAR-CLUSTERS; GALACTIC DISK; THICK DISKS; ELEMENTAL ABUNDANCE; DWARF SATELLITE;

D O I：

10.1093/mnras/stv327

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Galactic Archaeology with HERMES (GALAH) survey is a large high-resolution spectroscopic survey using the newly commissioned High Efficiency and Resolution Multi-Element Spectrograph (HERMES) on the Anglo-Australian Telescope. The HERMES spectrograph provides high-resolution (R similar to 28 000) spectra in four passbands for 392 stars simultaneously over a 2 deg field of view. The goal of the survey is to unravel the formation and evolutionary history of the Milky Way, using fossil remnants of ancient star formation events which have been disrupted and are now dispersed throughout the Galaxy. Chemical tagging seeks to identify such dispersed remnants solely from their common and unique chemical signatures; these groups are unidentifiable from their spatial, photometric or kinematic properties. To carry out chemical tagging, the GALAH survey will acquire spectra for a million stars down to V similar to 14. The HERMES spectra of FGK stars contain absorption lines from 29 elements including light proton-capture elements, alpha-elements, odd-Z elements, iron-peak elements and n-capture elements from the light and heavy s-process and the r-process. This paper describes the motivation and planned execution of the GALAH survey, and presents some results on the first-light performance of HERMES.

引用

页码：2604 / 2617

页数：14

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