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The selection function of the LAMOST Spectroscopic Survey of the Galactic Anti-centre.
- Source :
-
Monthly Notices of the Royal Astronomical Society . May2018, Vol. 476 Issue 3, p3278-3289. 12p. - Publication Year :
- 2018
-
Abstract
- We present a detailed analysis of the selection function of the LAMOST Spectroscopic Survey of the Galactic Anti-centre (LSS-GAC). LSS-GAC was designed to obtain low-resolution optical spectra for a sample of more than 3 million stars in the Galactic anti-centre. The second release of value-added catalogues of the LSS-GAC (LSS-GAC DR2) contains stellar parameters, including radial velocity, atmospheric parameters, elemental abundances, and absolute magnitudes deduced from 1.8 million spectra of 1.4 million unique stars targeted by the LSS-GAC between 2011 and 2014. For many studies using this data base, such as those investigating the chemodynamical structure of the Milky Way, a detailed understanding of the selection function of the survey is indispensable. In this paper, we describe how the selection function of the LSS-GAC can be evaluated to sufficient detail and provide selection function corrections for all spectroscopic measurements with reliable parameters released in LSS-GAC DR2. The results, to be released as new entries in the LSS-GAC value-added catalogues, can be used to correct the selection effects of the catalogue for scientific studies of various purposes. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GALACTIC center
*SPECTRUM analysis
*MILKY Way
*STARS
*ASTRONOMY
Subjects
Details
- Language :
- English
- ISSN :
- 00358711
- Volume :
- 476
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Publication Type :
- Academic Journal
- Accession number :
- 132660266
- Full Text :
- https://doi.org/10.1093/mnras/sty454