WHITE-DWARF-MAIN-SEQUENCE BINARIES IDENTIFIED FROM THE LAMOST PILOT SURVEY
Abstract
We present a set of white-dwarf-main-sequence (WDMS) binaries identified spectroscopically from the Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST, also called the Guo Shou Jing Telescope) pilot survey. We develop a color selection criteria based on what is so far the largest and most complete Sloan Digital Sky Survey (SDSS) DR7 WDMS binary catalog and identify 28 WDMS binaries within the LAMOST pilot survey. The primaries in our binary sample are mostly DA white dwarfs except for one DB white dwarf. We derive the stellar atmospheric parameters, masses, and radii for the two components of 10 of our binaries. We also provide cooling ages for the white dwarf primaries as well as the spectral types for the companion stars of these 10 WDMS binaries. These binaries tend to contain hot white dwarfs and early-type companions. Through cross-identification, we note that nine binaries in our sample have been published in the SDSS DR7 WDMS binary catalog. Nineteen spectroscopic WDMS binaries identified by the LAMOST pilot survey are new. Using the 3{sigma} radial velocity variation as a criterion, we find two post-common-envelope binary candidates from our WDMS binary sample.
- Authors:
- Publication Date:
- OSTI Identifier:
- 22136498
- Resource Type:
- Journal Article
- Journal Name:
- Astronomical Journal (New York, N.Y. Online)
- Additional Journal Information:
- Journal Volume: 146; Journal Issue: 4; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BINARY STARS; CATALOGS; COLOR; COOLING; MAIN SEQUENCE STARS; MASS; RADIAL VELOCITY; SKY; STELLAR ATMOSPHERES; TELESCOPES; WHITE DWARF STARS
Citation Formats
Juanjuan, Ren, Ali, Luo, Yinbi, Li, Peng, Wei, Jingkun, Zhao, Yongheng, Zhao, Yihan, Song, and Zhao Gang, E-mail: jjren@nao.cas.cn, E-mail: lal@nao.cas.cn. WHITE-DWARF-MAIN-SEQUENCE BINARIES IDENTIFIED FROM THE LAMOST PILOT SURVEY. United States: N. p., 2013.
Web. doi:10.1088/0004-6256/146/4/82.
Juanjuan, Ren, Ali, Luo, Yinbi, Li, Peng, Wei, Jingkun, Zhao, Yongheng, Zhao, Yihan, Song, & Zhao Gang, E-mail: jjren@nao.cas.cn, E-mail: lal@nao.cas.cn. WHITE-DWARF-MAIN-SEQUENCE BINARIES IDENTIFIED FROM THE LAMOST PILOT SURVEY. United States. https://doi.org/10.1088/0004-6256/146/4/82
Juanjuan, Ren, Ali, Luo, Yinbi, Li, Peng, Wei, Jingkun, Zhao, Yongheng, Zhao, Yihan, Song, and Zhao Gang, E-mail: jjren@nao.cas.cn, E-mail: lal@nao.cas.cn. 2013.
"WHITE-DWARF-MAIN-SEQUENCE BINARIES IDENTIFIED FROM THE LAMOST PILOT SURVEY". United States. https://doi.org/10.1088/0004-6256/146/4/82.
@article{osti_22136498,
title = {WHITE-DWARF-MAIN-SEQUENCE BINARIES IDENTIFIED FROM THE LAMOST PILOT SURVEY},
author = {Juanjuan, Ren and Ali, Luo and Yinbi, Li and Peng, Wei and Jingkun, Zhao and Yongheng, Zhao and Yihan, Song and Zhao Gang, E-mail: jjren@nao.cas.cn, E-mail: lal@nao.cas.cn},
abstractNote = {We present a set of white-dwarf-main-sequence (WDMS) binaries identified spectroscopically from the Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST, also called the Guo Shou Jing Telescope) pilot survey. We develop a color selection criteria based on what is so far the largest and most complete Sloan Digital Sky Survey (SDSS) DR7 WDMS binary catalog and identify 28 WDMS binaries within the LAMOST pilot survey. The primaries in our binary sample are mostly DA white dwarfs except for one DB white dwarf. We derive the stellar atmospheric parameters, masses, and radii for the two components of 10 of our binaries. We also provide cooling ages for the white dwarf primaries as well as the spectral types for the companion stars of these 10 WDMS binaries. These binaries tend to contain hot white dwarfs and early-type companions. Through cross-identification, we note that nine binaries in our sample have been published in the SDSS DR7 WDMS binary catalog. Nineteen spectroscopic WDMS binaries identified by the LAMOST pilot survey are new. Using the 3{sigma} radial velocity variation as a criterion, we find two post-common-envelope binary candidates from our WDMS binary sample.},
doi = {10.1088/0004-6256/146/4/82},
url = {https://www.osti.gov/biblio/22136498},
journal = {Astronomical Journal (New York, N.Y. Online)},
issn = {1538-3881},
number = 4,
volume = 146,
place = {United States},
year = {Tue Oct 01 00:00:00 EDT 2013},
month = {Tue Oct 01 00:00:00 EDT 2013}
}