Affiliation:
1. Instituto de Física, Universidade Federal do Rio Grande do Sul, Porto-Alegre, RS 91501-900, Brazil
2. Institut für Theoretische Physik und Astrophysik, Universität Kiel, D-24098 Kiel, Germany
3. Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
Abstract
ABSTRACT
White dwarfs are the end state of the evolution of more than 97 per cent of all stars, and therefore carry information on the structure and evolution of the Galaxy through their luminosity function and initial-to-final mass relation. Examining the new spectra of all white or blue stars in the Sloan Digital Sky Survey Data Release 16, we report the spectral classification of 2410 stars, down to our identification cut-off of signal-to-noise ratio equal to three. We newly identify 1404 DAs, 189 DZs, 103 DCs, 12 DBs, and nine CVs. The remaining objects are a mix of carbon or L stars (dC/L), narrow-lined hydrogen-dominated stars (sdA), dwarf F stars, and P Cyg objects. As white dwarf stars were not targeted by SDSS DR16, the number of new discoveries is much smaller than in previous releases. We also report atmospheric parameters and masses for a subset consisting of 555 new DAs, 10 new DBs, and 85 DZs for spectra with signal-to-noise ratio larger than 10.
Funder
CAPES
Conselho Nacional de Desenvolvimento Científico e Tecnológico
FAPERGS
Science and Technology Facilities Council
Alfred P. Sloan Foundation
University of Utah
Johns Hopkins University
University of Tokyo
Lawrence Berkeley National Laboratory
AIP
New Mexico State University
New York University
University of Notre Dame
MCTI
Ohio State University
Pennsylvania State University
Universidad Nacional Autónoma de México
University of Arizona
University of Colorado Boulder
University of Oxford
University of Portsmouth
University of Virginia
University of Washington
Vanderbilt University
Yale University
European Space Agency
BELSPO
FAPESP
University of Antofagasta
National Science Foundation of China
Charles University Prague
Estonian Ministry of Education and Research
ELSA
Seventh Framework Programme
Gaia European Network for Improved data User Services
European Research Council
Horizon 2020
European Science Foundation
Plan for European Cooperating States
European Union
European Regional Development Fund
CNRS
Centre National d’Etudes Spatiales
ANR
Paris Sciences et Lettres
Université de Bordeaux
Deutsches Zentrum für Luft- und Raumfahrt
Hungarian Academy of Sciences
National Research, Development and Innovation Fund
Science Foundation Ireland
Royal Society
SFI
Israel Science Foundation
Agenzia Spaziale Italiana
INAF
ASI Sciece Data Centre
Netherlands Organisation for Scientific Research
Nederlandse Onderzoekschool Voor Astronomie
Polish National Science Centre
FCT
Slovenian Research Agency
MINECO
FEDER
Ministerio de Economía, Industria y Competitividad
Ministerio de Educación, Cultura y Deporte
ICCUB
Centro Nacional de Supercomputación
ESA
Swiss National Science Foundation
United Kingdom Space Agency
Publisher
Oxford University Press (OUP)
Subject
Space and Planetary Science,Astronomy and Astrophysics