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Related papers: DA white dwarfs observed in LAMOST pilot survey

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We present a spectroscopically identified catalogue of 72 DA white dwarfs from the LAMOST pilot survey. 35 are found to be new identifications after cross-correlation with the Eisenstein et al. and Villanova catalogues. The effective…

Solar and Stellar Astrophysics · Physics 2015-06-15 J. K. Zhao , A. L. Luo , T. D. Oswalt , G. Zhao

In this paper, we report white dwarfs identified in the 5th Data Release of the Large Area Multi-Object fibre Spectroscopic Telescope, including spectral types of DA, DB, DC, DZ, and so on. There are 2 625 DA spectra of 2 281 DA stars, 182…

Solar and Stellar Astrophysics · Physics 2022-01-19 Jincheng Guo , Jingkun Zhao , Huawei Zhang , Jiajun Zhang , Yu Bai , Nikolay Walters , Yong Yang , Jifeng Liu

Context. White dwarf-main sequence (WDMS) binaries are used to study several different important open problems in modern astrophysics. Aims. The Sloan Digital Sky Survey (SDSS) identified the largest catalogue of WDMS binaries currently…

Solar and Stellar Astrophysics · Physics 2014-11-05 Juanjuan Ren , Alberto Rebassa-Mansergas , Ali Luo , Yongheng Zhao , Maosheng Xiang , Xiaowei Liu , Gang Zhao , Ge Jin , Yong Zhang

We cross-matched 1.3 million white dwarf (WD) candidates from Gaia EDR3 with spectral data from LAMOST DR7 within 3 arcsec. Applying machine learning described in our previous work, we spectroscopically identified 6,190 WD objects after…

Solar and Stellar Astrophysics · Physics 2021-10-04 Xiao Kong , A-Li Luo

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…

Solar and Stellar Astrophysics · Physics 2015-06-16 Juanjuan Ren , Ali Luo , Yinbi Li , Peng Wei , Jingkun Zhao , Yongheng Zhao , Yihan Song , Gang Zhao

In Gentile Fusillo et al. (2015) we developed a selection method for white dwarf candidates which makes use of photometry, colours and proper motions to calculate a probability of being a white dwarf (Pwd). The application of our method to…

Solar and Stellar Astrophysics · Physics 2015-07-15 N. P. Gentile Fusillo , A. Rebassa-Mansergas , B. T. Gänsicke , X. -W. Liu , J. J. Ren , D. Koester , Y. Zhan , Y. Hou , Y. Wang , M. Yang

We present a spectroscopic catalog of 67082 M dwarfs from the LAMOST pilot survey. For each spectrum of the catalog, spectral subtype, radial velocity, equivalent width of H${\alpha}$, a number of prominent molecular band indices and the…

Modern large-scale surveys have allowed the identification of large numbers of white dwarfs. However, these surveys are subject to complicated target selection algorithms, which make it almost impossible to quantify to what extent the…

Solar and Stellar Astrophysics · Physics 2015-06-24 A. Rebassa-Mansergas , X. -W. Liu , R. Cojocaru , H. -B. Yuan , S. Torres , E. Garcia-Berro , M. -X. Xiang , Y. Huang , D. Koester , Y. Hou , G. Li , Y. Zhang

Infrared excess is an important probe of sub-stellar companions and/or debris disks around white dwarfs (WDs). Such systems are still rare for in-depth understanding of their formation and long-term evolution. One of the largest…

Solar and Stellar Astrophysics · Physics 2023-02-15 Lin Wang , Xiaoxia Zhang , Junfeng Wang , Zhi-Xiang Zhang , Taotao Fang , Wei-Min Gu , Jincheng Guo , Xiaochuan Jiang

We present the data release (DR) 5 catalogue of white dwarf-main sequence (WDMS) binaries from the Large Area Multi-Object fiber Spectroscopic Telescope (LAMOST). The catalogue contains 876 WDMS binaries, of which 757 are additions to our…

Solar and Stellar Astrophysics · Physics 2018-04-11 J. -J. Ren , A. Rebassa-Mansergas , S. G. Parsons , X. -W. Liu , A. -L. Luo , X. Kong , H. -T. Zhang

We present the preliminary results of a survey aimed at significantly increasing the range and completeness of the local census of spectroscopically confirmed white dwarfs. The current census of nearby white dwarfs is reasonably complete…

Solar and Stellar Astrophysics · Physics 2015-06-15 M. -M. Limoges , S. Lepine , P. Bergeron

We present a method which uses colour-colour cuts on SDSS photometry to select white dwarfs with hydrogen rich (DA) atmospheres without the recourse to spectroscopy. This method results in a sample of DA white dwarfs that is 95% complete at…

Solar and Stellar Astrophysics · Physics 2012-08-01 J. Girven , B. T. Gaensicke , D. Steeghs , D. Koester

The third data release of Gaia has provided approximately 220 million low resolution spectra. Among these, about 100,000 correspond to white dwarfs. The magnitude of this quantity of data precludes the possibility of performing spectral…

Solar and Stellar Astrophysics · Physics 2023-11-29 Enrique Miguel García-Zamora , Santiago Torres , Alberto Rebassa-Mansergas

Our aim is to compile a catalog of white dwarfs within 40 parsecs of the Sun, in which newly discovered objects would significantly increase the completeness of the current census. White dwarf candidates are identified from the SUPERBLINK…

Solar and Stellar Astrophysics · Physics 2015-05-20 M. -M. Limoges , P. Bergeron , Sebastien Lepine

We present a spectroscopic survey of 230 white dwarf candidates within 40 pc of the Sun from the William Herschel Telescope and Gran Telescopio Canarias. All candidates were selected from $\textit{Gaia}$ Data Release 2 (DR2) and in almost…

The next generation of spectroscopic surveys is expected to provide spectra for hundreds of thousands of white dwarf (WD) candidates in the upcoming years. Currently, spectroscopic classification of white dwarfs is mostly done by visual…

Solar and Stellar Astrophysics · Physics 2023-03-01 Olivier Vincent , Pierre Bergeron , Patrick Dufour

We present a catalogue of white dwarf candidates selected from the second data release of $Gaia$ (DR2). We used a sample of spectroscopically confirmed white dwarfs from the Sloan Digital Sky Survey (SDSS) to map the entire space spanned by…

We used the revised New Luyten Two-Tenths (rNLTT) catalog to select high proper motion white dwarf candidates. We studied the spectra of 70 hydrogen-rich (DA) white dwarfs, which were obtained at the Cerro Tololo Inter-American Observatory…

Solar and Stellar Astrophysics · Physics 2009-01-20 E. Arazimova , A. Kawka , S. Vennes

The Sloan Digital Sky Survey (SDSS) has created a knowledge gap between the Northern and the Southern hemispheres which is very marked for white dwarfs: only $\simeq 15$% of the known white dwarfs are south of the equator. Here we make use…

We have conducted a spectroscopic survey of over 1300 bright (V < 17.5), hydrogen-rich white dwarfs based largely on the last published version of the McCook & Sion catalog. The complete results from our survey, including the spectroscopic…

Solar and Stellar Astrophysics · Physics 2015-05-30 Alexandros Gianninas , Pierre Bergeron , Maria Teresa Ruiz
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