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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…

We present a method to reliably select variable white dwarfs from large area time domain surveys and apply this method in a pilot study to search for pulsating white dwarfs in the Sloan Digital Sky Survey Stripe 82. From a sample 400…

Solar and Stellar Astrophysics · Physics 2015-10-29 Nicola Pietro Gentile Fusillo , J. J. Hermes , Boris T. Gänsicke

The spectral energy distributions for pure-hydrogen (DA) hot white dwarfs can be accurately predicted by model atmospheres. This makes it possible to define spectrophotometric calibrators by scaling the theoretical spectral shapes with…

Solar and Stellar Astrophysics · Physics 2015-05-13 C. Allende Prieto , I. Hubeny , J. A. Smith

We report the discovery of 39 Faint High Latitude Carbon Stars (FHLCs) from Sloan Digital Sky Survey commissioning data. The objects, each selected photometrically and verified spectroscopically, range over 16.6 < r* < 20.0, and show a…

We present a near-infrared photometric search for unresolved substellar companions and debris disks around white dwarfs in the UKIRT Infrared Deep Sky Survey Large Area Survey. We cross-correlate the SDSS DR4 and McCook & Sion catalogues of…

Solar and Stellar Astrophysics · Physics 2015-05-28 P. R. Steele , M. R. Burleigh , P. D. Dobbie , R. F. Jameson , M. A. Barstow , R. P. Satterthwaite

We present a census of the 12,060 spectra of blue objects ($(g-r)_0<-0.25$) in the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8). As part of the data release, all of the spectra were cross-correlated with 48 template spectra of…

Astrophysics of Galaxies · Physics 2015-06-23 Samantha Scibelli , Heidi Jo Newberg , Jeffrey L. Carlin , Brian Yanny

We revisit the properties and astrophysical implications of the field white dwarf mass distribution in preparation of Gaia applications. Our study is based on the two samples with the best established completeness and most precise…

Solar and Stellar Astrophysics · Physics 2016-07-27 P. -E. Tremblay , J. Cummings , J. S. Kalirai , B. T. Gaensicke , N. Gentile-Fusillo , R. Raddi

We predict the spatial distribution and number of Milky Way dwarf galaxies to be discovered in the DES and LSST surveys, by completeness correcting the observed SDSS dwarf population. We apply most massive in the past, earliest forming, and…

Astrophysics of Galaxies · Physics 2015-06-22 Jonathan R. Hargis , Beth Willman , Annika H. G. Peter

This paper reports follow-up photometric and spectroscopic observations, including warm Spitzer IRAC photometry of seven white dwarfs from the SDSS with apparent excess flux in UKIDSS K-band observations. Six of the science targets were…

Solar and Stellar Astrophysics · Physics 2012-06-06 J. Farihi , B. T. Gänsicke , P. R. Steele , J. Girven , M. R. Burleigh , E. Breedt , D. Koester

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

This paper continues the series that identifies new cataclysmic variables found in the Sloan Digital Sky Survey. We present 36 cataclysmic variables and one possible symbiotic star from Sloan spectra obtained during 2002, of which 34 are…

The commissioning year of the Sloan Digital Sky Survey has demonstrated that many cataclysmic variables have been missed in previous surveys with brighter limits. We report the identification of 22 cataclysmic variables, of which 19 are new…

We report the discovery of two new accreting pulsating white dwarf stars amongst the cataclysmic variables of the Sloan Digital Sky Survey: SDSSJ074531.91+453829.5 and SDSSJ091945.10+085710.0. We observe high amplitude non-sinusoidal…

We have assembled a spectroscopic sample of low-mass dwarfs observed as part of the Sloan Digital Sky Survey along one Galactic sightline, designed to investigate the observable properties of the thin and thick disks. This sample of ~7400 K…

We present 5,080 white dwarf (WD) candidates selected from stars matching between the multi-band imaging datasets of the Subaru Hyper Suprime-Cam (HSC) Survey and the Sloan Digital Sky Survey (SDSS) in the Stripe82 region covering about…

Astrophysics of Galaxies · Physics 2024-12-16 Tian Qiu , Masahiro Takada , Naoki Yasuda , Akira Tokiwa , Kazumi Kashiyama , Yoshihisa Suzuki , Kenta Hotokezaka

The eighteenth data release of the Sloan Digital Sky Surveys (SDSS) is the first one for SDSS-V, the fifth generation of the survey. SDSS-V comprises three primary scientific programs, or "Mappers": Milky Way Mapper (MWM), Black Hole Mapper…

Astrophysics of Galaxies · Physics 2023-08-16 Andrés Almeida , Scott F. Anderson , Maria Argudo-Fernández , Carles Badenes , Kat Barger , Jorge K. Barrera-Ballesteros , Chad F. Bender , Erika Benitez , Felipe Besser , Dmitry Bizyaev , Michael R. Blanton , John Bochanski , Jo Bovy , William Nielsen Brandt , Joel R. Brownstein , Johannes Buchner , Esra Bulbul , Joseph N. Burchett , Mariana Cano Díaz , Joleen K. Carlberg , Andrew R. Casey , Vedant Chandra , Brian Cherinka , Cristina Chiappini , Abigail A. Coker , Johan Comparat , Charlie Conroy , Gabriella Contardo , Arlin Cortes , Kevin Covey , Jeffrey D. Crane , Katia Cunha , Collin Dabbieri , James W. Davidson , Megan C. Davis , Nathan De Lee , José Eduardo Méndez Delgado , Sebastian Demasi , Francesco Di Mille , John Donor , Peter Dow , Tom Dwelly , Mike Eracleous , Jamey Eriksen , Xiaohui Fan , Emily Farr , Sara Frederick , Logan Fries , Peter Frinchaboy , Boris T. Gaensicke , Junqiang Ge , Consuelo González Ávila , Katie Grabowski , Catherine Grier , Guillaume Guiglion , Pramod Gupta , Patrick Hall , Keith Hawkins , Christian R. Hayes , J. J. Hermes , Lorena Hernández-García , David W. Hogg , Jon A. Holtzman , Hector Javier Ibarra-Medel , Alexander Ji , Paula Jofre , Jennifer A. Johnson , Amy M. Jones , Karen Kinemuchi , Matthias Kluge , Anton Koekemoer , Juna A. Kollmeier , Marina Kounkel , Dhanesh Krishnarao , Mirko Krumpe , Ivan Lacerna , Paulo Jakson Assuncao Lago , Chervin Laporte , Ang Liu , Chao Liu , Xin Liu , Alexandre Roman Lopes , Matin Macktoobian , Steven R. Majewski , Viktor Malanushenko , Dan Maoz , Thomas Masseron , Karen L. Masters , Gal Matijevic , Aidan McBride , Ilija Medan , Andrea Merloni , Sean Morrison , Natalie Myers , Szabolcs Mészáros , C. Alenka Negrete , David L. Nidever , Christian Nitschelm , Audrey Oravetz , Daniel Oravetz , Kaike Pan , Yingjie Peng , Marc H. Pinsonneault , Rick Pogge , Dan Qiu , Anna Barbara de Andrade Queiroz , Solange V. Ramirez , Hans-Walter Rix , Daniela Fernández Rosso , Jessie Runnoe , Mara Salvato , Sebastian F. Sanchez , Felipe A. Santana , Andrew Saydjari , Conor Sayres , Kevin C. Schlaufman , Donald P. Schneider , Axel Schwope , Javier Serna , Yue Shen , Jennifer Sobeck , Ying-Yi Song , Diogo Souto , Taylor Spoo , Keivan G. Stassun , Matthias Steinmetz , Ilya Straumit , Guy Stringfellow , José Sánchez-Gallego , Manuchehr Taghizadeh-Popp , Jamie Tayar , Ani Thakar , Patricia B. Tissera , Andrew Tkachenko , Hector Hernandez Toledo , Benny Trakhtenbrot , Jose G. Fernandez Trincado , Nicholas Troup , Jonathan R. Trump , Sarah Tuttle , Natalie Ulloa , Jose Antonio Vazquez-Mata , Pablo Vera Alfaro , Sandro Villanova , Stefanie Wachter , Anne-Marie Weijmans , Adam Wheeler , John Wilson , Leigh Wojno , Julien Wolf , Xiang-Xiang Xue , Jason E. Ybarra , Eleonora Zari , Gail Zasowski

We report the discovery of three nearby old halo white dwarf candidates in the Sloan Digital Sky Survey (SDSS), including two stars in a common proper motion binary system. These candidates are selected from our 2800 square degree proper…

A search of more than 3,000 square degrees of high latitude sky by the Sloan Digital Sky Survey has yielded 251 faint high-latitude carbon stars (FHLCs), the large majority previously uncataloged. We present homogeneous spectroscopy,…

We conducted a spectropolarimetic survey of 58 high proper-motion white dwarfs which achieved uncertainties of >2 kG in the Halpha line and >5 kG in the upper Balmer line series. The survey aimed at detecting low magnetic fields (< 100 kG)…

Solar and Stellar Astrophysics · Physics 2015-06-05 Adela Kawka , Stephane Vennes

We have identified 63 flares on M dwarfs from the individual component spectra in the Sloan Digital Sky Survey using a novel measurement of emission line strength called the Flare Line Index. Each of the ~38,000 M dwarfs in the SDSS low…

Solar and Stellar Astrophysics · Physics 2015-05-19 Eric J. Hilton , Andrew A. West , Suzanne L. Hawley , Adam F. Kowalski