White dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 16

Abstract

White dwarfs are the end state of the evolution of more than 97% 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 9 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.

arXiv admin note: substantial text overlap with arXiv:1904.01626

References in corpus (22)

• The SEGUE Stellar Parameter Pipeline. I. Description and Initial Validation Tests
• The frequency of planetary debris around young white dwarfs
• The SEGUE Stellar Parameter Pipeline. II. Validation with Galactic Globular and Open Clusters
• Super and massive AGB stars - IV. Final fates - Initial to final mass relation
• New white dwarf stars in the Sloan Digital Sky Survey Data Release 10
• The SEGUE Stellar Parameter Pipeline. III. Comparison with High-Resolution Spectroscopy of SDSS/SEGUE Field Stars
• Gaia Early Data Release 3: Summary of the contents and survey properties
• On the Measurement of Fundamental Parameters of White Dwarfs in the Gaia Era
• White dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 14
• $Gaia$ white dwarfs within 40 pc II: the volume-limited northern hemisphere sample
• RR-Lyrae-type pulsations from a 0.26-solar-mass star in a binary system
• The Future is Now: the Formation of Single Low Mass White Dwarfs in the Solar Neighborhood
• Cool DZ white dwarfs I: Identification and spectral analysis
• White Dwarf Cosmochronology in the Solar Neighborhood
• Precise Atmospheric Parameters for the Shortest Period Binary White Dwarfs: Gravitational Waves, Metals, and Pulsations
• $\text{Gaia}$ white dwarfs within 40 pc I: spectroscopic observations of new candidates
• Gaia Data Release 2 Catalogue of Extremely-low Mass White Dwarf Candidates
• WASP 1628+10 - an EL CVn-type binary with a very-low-mass stripped-red-giant star and multi-periodic pulsations
• The Most Massive White Dwarfs in the Solar Neighborhood
• The sdA problem I: Physical Properties
• The evolution of carbon-polluted white dwarfs at low effective temperatures
• Searching for Low-mass Population III Stars Disguised as White Dwarfs

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• Data-Driven Selection and Spectral Classification of White Dwarf Stars
• Random Forest classification of Gaia DR3 white dwarf-main sequence spectra: a feasibility study
• Uncovering new white dwarf - open cluster associations using Gaia DR3
• Birth cluster simulations of planetary systems with multiple super-Earths: initial conditions for white dwarf pollution drivers
• Photometric White Dwarf Rotation
• Asteroseismology of PG 1541$+$651 and BPM 31594 with TESS
• Detection of a new sample of Galactic White Dwarfs in the direction of the Small Magellanic Cloud
• Where are the binaries? -- Searching for blue horizontal-branch stars in binary systems in the inner Galactic Halo
• White Dwarf Stars in the Big Data Era
• Searching for new variable white dwarfs: The discovery of the three new pulsating and three new binary systems
• Exploring faint white dwarfs and the luminosity function with Subaru HSC and SDSS in Stripe 82
• eROSITA-selection of new period-bounce Cataclysmic Variables: First follow-up confirmation using TESS and SDSS
• Detection and Preliminary Characterisation of Polluted White Dwarfs from Gaia EDR3 and LAMOST