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Related papers: A Multi-Survey Approach to White Dwarf Discovery

200 papers

We have presented 309 new white-dwarf (WD) + main-sequence (MS) star binaries identified from the Sloan Digital Sky Survey (SDSS) Tenth Data Release (DR10). The majority of them consist of a white dwarf and a low-mass secondary (typically M…

Solar and Stellar Astrophysics · Physics 2015-06-23 Lifang Li , Xiaobo Gong , Fenghui Zhang , Quanwang Han , Xiaoyang Kong

Using a machine learning (ML) method, we mine DB white dwarfs (DBWDs) from the Sloan Digital Sky Survey (SDSS) Data Release (DR) 12 and DR14. The ML method consists of two parts: feature extraction and classification. The least absolute…

Solar and Stellar Astrophysics · Physics 2018-07-11 Xiao Kong , A-Li Luo , Xiang-Ru Li , You-Fen Wang , Yin-Bi Li , Jing-Kun Zhao

We present a spectroscopic catalog of 70,841 visually inspected M dwarfs from the seventh data release (DR7) of the Sloan Digital Sky Survey (SDSS). For each spectrum, we provide measurements of the spectral type, a number of molecular…

We present a detailed description of the physical properties of our current census of white dwarfs within 40 pc of the Sun, based on an exhaustive spectroscopic survey of northern hemisphere candidates from the SUPERBLINK proper motion…

Solar and Stellar Astrophysics · Physics 2015-05-12 M. -M. Limoges , P. Bergeron , S. Lépine

We present an improved spectroscopic and photometric analysis of hydrogen-line DA white dwarfs from the Sloan Digital Sky Survey Data Release 4 based on model atmospheres that include improved Stark broadening profiles with non-ideal gas…

Solar and Stellar Astrophysics · Physics 2015-05-27 P. -E. Tremblay , P. Bergeron , A. Gianninas

We present accurate trigonometric parallaxes for 20 new members of the 25 pc white dwarf sample as part of the DENSE project (Discovery and Evalution of Nearby Stellar Embers, http://www.DenseProject.com). Previously, there were a total of…

Astrophysics of Galaxies · Physics 2009-11-13 John P. Subasavage , Wei-Chun Jao , Todd J. Henry , P. Bergeron , P. Dufour , Philip A. Ianna , Edgardo Costa , Rene A. Mendez

With the imminent start of the Legacy Survey for Space and Time (LSST) on the Vera C. Rubin Observatory, and several new space telescopes expected to begin operations later in this decade, both time domain and wide-field astronomy are on…

Astrophysics of Galaxies · Physics 2020-09-02 Nicholas J. Fantin , Patrick Côté , Alan McConnachie

We present a new catalog of spectroscopically-confirmed white dwarf stars from the Sloan Digital Sky Survey Data Release 7 spectroscopic catalog. We find 20,407 white dwarf spectra, representing 19,712 stars, and provide atmospheric model…

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

We have identified 7 new magnetic DA white dwarfs in the Early Data Release of the Sloan Digital Sky Survey. Our selection strategy has also recovered all the previously known magnetic white dwarfs contained in the SDSS EDR, KUV03292+0035…

Astrophysics · Physics 2009-11-07 B. T. Gaensicke , F. Euchner , S. Jordan

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

We present the results of a search for deeply-eclipsing white dwarfs in the ZTF Data Release 4. We identify nine deeply-eclipsing white dwarf candidates, four of which we followed up with high-cadence photometry and spectroscopy. Three of…

Solar and Stellar Astrophysics · Physics 2022-05-10 Alekzander Kosakowski , M. Kilic , W. R. Brown , P. Bergeron , T. Kupfer

We report the discovery of five very cool white dwarfs in the Sloan Digital Sky Survey (SDSS). Four are ultracool, exhibiting strong collision induced absorption (CIA) from molecular hydrogen and are similar in color to the three previously…

We selected brown dwarf candidates from the seventh Data Release of the Sloan Digital Sky Survey (SDSS DR7) with new photometric selectioncriteria based on a parameteriaztion of well-known L and T dwarfs. Then we confirmed their status with…

Astrophysics of Galaxies · Physics 2010-01-21 Z. H. Zhang , H. R. A. Jones , D. J. Pinfield , R. S. Pokorny , Z. Han

We present the first results from SWARMS (Sloan White dwArf Radial velocity data Mining Survey), an ongoing project to identify compact white dwarf (WD) binaries in the spectroscopic catalog of the Sloan Digital Sky Survey. The first object…

Solar and Stellar Astrophysics · Physics 2014-11-20 Carles Badenes , Fergal Mullally , Susan E. Thompson , Robert H. Lupton

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

We have compiled photometric data from the Wide-field Infrared Survey Explorer All Sky Survey and other archival sources for the more than 2200 objects in the original McCook & Sion Catalog of Spectroscopically Identified White Dwarfs. We…

Astrophysics of Galaxies · Physics 2015-06-15 D. W. Hoard , John H. Debes , Stefanie Wachter , David T. Leisawitz , Martin Cohen

We present an updated version of the spectroscopic white dwarf-main sequence (WDMS) binary catalogue from the Sloan Digital Sky Survey (SDSS). 395 new systems are serendipitous discoveries from the spectroscopic SDSSI/II Legacy targets. As…

Solar and Stellar Astrophysics · Physics 2015-05-30 A. Rebassa-Mansergas , A. Nebot Gomez-Moran , M. R. Schreiber , B. T. Gansicke , A. Schwope , J. Gallardo , D. Koester

We present a catalogue of 1602 white dwarf-main sequence binaries (WDMS) from the spectroscopic Sloan Digital Sky Survey Data Release 6 (SDSS DR6). Among these we identify 440 as new WDMS binaries. We select WDMS binary candidates from…

Solar and Stellar Astrophysics · Physics 2015-05-14 A. Rebassa-Mansergas , B. T. Gaensicke , M. R. Schreiber , D. Koester , P. Rodriguez-Gil

The upcoming NASA Transiting Exoplanet Survey Satellite (TESS) will obtain space-based uninterrupted light curves for a large sample of bright white dwarfs distributed across the entire sky, providing a very rich resource for…