scholarly journals A Catalog of Spectroscopically Identified White Dwarf Stars in the First Data Release of the Sloan Digital Sky Survey

2004 ◽  
Vol 607 (1) ◽  
pp. 426-444 ◽  
Author(s):  
S. J. Kleinman ◽  
Hugh C. Harris ◽  
Daniel J. Eisenstein ◽  
James Liebert ◽  
Atsuko Nitta ◽  
...  
Keyword(s):  
White Dwarf ◽  
Sloan Digital Sky Survey ◽  
Dwarf Stars ◽  
White Dwarf Stars ◽  
Sky Survey ◽  
Data Release

scholarly journals White Dwarf Stars

2017 ◽  
Vol 45 ◽  
pp. 1760023
Author(s):  
S. O. Kepler ◽  
Alejandra Daniela Romero ◽  
Ingrid Pelisoli ◽  
Gustavo Ourique
Keyword(s):  
White Dwarf ◽  
Final Stage ◽  
White Dwarfs ◽  
Sloan Digital Sky Survey ◽  
Dwarf Stars ◽  
Multiple Systems ◽  
White Dwarf Stars ◽  
Sky Survey ◽  
Data Release ◽  
Low Mass

White dwarf stars are the final stage of most stars, born single or in multiple systems. We discuss the identification, magnetic fields, and mass distribution for white dwarfs detected from spectra obtained by the Sloan Digital Sky Survey up to Data Release 13 in 2016, which lead to the increase in the number of spectroscopically identified white dwarf stars from 5[Formula: see text]000 to 39[Formula: see text]000. This number includes only white dwarf stars with [Formula: see text], i.e., excluding the Extremely Low Mass white dwarfs, which are necessarily the byproduct of stellar interaction.

scholarly journals White dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 14

2019 ◽  
Vol 486 (2) ◽  
pp. 2169-2183 ◽  
Author(s):  
S O Kepler ◽  
Ingrid Pelisoli ◽  
Detlev Koester ◽  
Nicole Reindl ◽  
Stephan Geier ◽  
...  
Keyword(s):  
Survey Data ◽  
White Dwarf ◽  
White Dwarfs ◽  
Main Sequence ◽  
Sloan Digital Sky Survey ◽  
Dwarf Stars ◽  
White Dwarf Stars ◽  
Sky Survey ◽  
Data Release ◽  
Hot Subdwarfs

ABSTRACT White dwarfs carry information on the structure and evolution of the Galaxy, especially through their luminosity function and initial-to-final mass relation. Very cool white dwarfs provide insight into the early ages of each population. Examining the spectra of all stars with 3σ proper motion in the Sloan Digital Sky Survey Data Release 14, we report the classification for 20 088 spectroscopically confirmed white dwarfs, plus 415 hot subdwarfs, and 311 cataclysmic variables. We obtain Teff, log  g, and mass for hydrogen atmosphere white dwarf stars (DAs), warm helium atmosphere white dwarfs (DBs), hot subdwarfs (sdBs and sdOs), and estimate photometric Teff for white dwarf stars with continuum spectra (DCs). We find 15 793 sdAs and 447 dCs between the white dwarf cooling sequence and the main sequence, especially below $T_\mathrm{eff}\simeq 10\, 000$ K; most are likely low-mass metal-poor main-sequence stars, but some could be the result of interacting binary evolution.

scholarly journals New white dwarf stars in the Sloan Digital Sky Survey Data Release 10

2014 ◽  
Vol 446 (4) ◽  
pp. 4078-4087 ◽  
Author(s):  
S. O. Kepler ◽  
I. Pelisoli ◽  
D. Koester ◽  
G. Ourique ◽  
S. J. Kleinman ◽  
...  
Keyword(s):  
Survey Data ◽  
White Dwarf ◽  
Sloan Digital Sky Survey ◽  
Dwarf Stars ◽  
White Dwarf Stars ◽  
Sky Survey ◽  
Data Release

scholarly journals Cool Companions to White Dwarf Stars from the Two Micron All Sky Survey All Sky Data Release

2007 ◽  
Vol 134 (1) ◽  
pp. 26-42 ◽  
Author(s):  
D. W. Hoard ◽  
S. Wachter ◽  
Laura K. Sturch ◽  
Allison M. Widhalm ◽  
Kevin P. Weiler ◽  
...  
Keyword(s):  
White Dwarf ◽  
Dwarf Stars ◽  
White Dwarf Stars ◽  
Sky Survey ◽  
Data Release

White Dwarf Stars in the Sloan Digital SKY Survey: Photometry

White Dwarfs ◽  
2003 ◽  
pp. 391-392
Author(s):  
S. J. Kleinman ◽  
T. Takato ◽  
A. Nitta ◽  
J. Krzesinski
Keyword(s):  
White Dwarf ◽  
Sloan Digital Sky Survey ◽  
Dwarf Stars ◽  
White Dwarf Stars ◽  
Sky Survey

scholarly journals NEW PULSATING DB WHITE DWARF STARS FROM THE SLOAN DIGITAL SKY SURVEY

2008 ◽  
Vol 690 (1) ◽  
pp. 560-565 ◽  
Author(s):  
A. Nitta ◽  
S. J. Kleinman ◽  
J. Krzesinski ◽  
S. O. Kepler ◽  
T. S. Metcalfe ◽  
...  
Keyword(s):  
White Dwarf ◽  
Sloan Digital Sky Survey ◽  
Dwarf Stars ◽  
White Dwarf Stars ◽  
Sky Survey

scholarly journals Magnetic white dwarf stars in the Sloan Digital Sky Survey

2013 ◽  
Vol 429 (4) ◽  
pp. 2934-2944 ◽  
Author(s):  
S. O. Kepler ◽  
I. Pelisoli ◽  
S. Jordan ◽  
S. J. Kleinman ◽  
D. Koester ◽  
...  
Keyword(s):  
White Dwarf ◽  
Sloan Digital Sky Survey ◽  
Dwarf Stars ◽  
White Dwarf Stars ◽  
Sky Survey

scholarly journals Component masses of young, wide, non-magnetic white dwarf binaries in the Sloan Digital Sky Survey Data Release 7

2014 ◽  
Vol 440 (4) ◽  
pp. 3184-3201 ◽  
Author(s):  
R. B. Baxter ◽  
P. D. Dobbie ◽  
Q. A. Parker ◽  
S. L. Casewell ◽  
N. Lodieu ◽  
...  
Keyword(s):  
Survey Data ◽  
White Dwarf ◽  
Sloan Digital Sky Survey ◽  
Sky Survey ◽  
Data Release

scholarly journals Gaia Data Release 2 catalogue of extremely low-mass white dwarf candidates

2019 ◽  
Vol 488 (2) ◽  
pp. 2892-2903 ◽  
Author(s):  
Ingrid Pelisoli ◽  
Joris Vos
Keyword(s):  
White Dwarf ◽  
Theoretical Models ◽  
Dwarf Stars ◽  
Single Star ◽  
Common Envelope ◽  
White Dwarf Stars ◽  
Final Sample ◽  
Data Release ◽  
Low Mass ◽  
Binary Evolution

ABSTRACT Extremely low-mass white dwarf stars (ELMs) are M < 0.3 M⊙ helium-core white dwarfs born either as a result of a common-envelope phase or after a stable Roche lobe overflow episode in a multiple system. The Universe is not old enough for ELMs to have formed through single-star evolution channels. As remnants of binary evolution, ELMs can shed light onto the poorly understood phase of common-envelope evolution and provide constraints to the physics of mass accretion. Most known ELMs will merge in less than a Hubble time, providing an important contribution to the signal to be detected by upcoming space-based gravitational wave detectors. There are currently less than 150 known ELMs; most were selected by colour, focusing on hot objects, in a magnitude-limited survey of the Northern hemisphere only. Recent theoretical models have predicted a much larger space density for ELMs than estimated observationally based on this limited sample. In order to perform meaningful comparisons with theoretical models and test their predictions, a larger well-defined sample is required. In this work, we present a catalogue of ELM candidates selected from the second data release of Gaia (DR2). We have used predictions from theoretical models and analysed the properties of the known sample to map the space spanned by ELMs in the Gaia Hertzsprung–Russell diagram. Defining a set of colour cuts and quality flags, we have obtained a final sample of 5762 ELM candidates down to Teff ≈ 5000 K.

scholarly journals White-dwarf + main-sequence binaries identified from the ninth data release of the Sloan Digital Sky Survey

2014 ◽  
Vol 445 (2) ◽  
pp. 1331-1338 ◽  
Author(s):  
Lifang Li ◽  
Fenghui Zhang ◽  
Quanwang Han ◽  
Xiaoyang Kong ◽  
Xiaobo Gong
Keyword(s):  
White Dwarf ◽  
Main Sequence ◽  
Sloan Digital Sky Survey ◽  
Sky Survey ◽  
Data Release
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