Results 51 to 60 of about 4,387 (203)
White dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 16 [PDF]
Monthly notices of the Royal Astronomical Society, 2019 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.
S. O. Kepler +8 more
semanticscholar +1 more source
Hot Subdwarfs in the Galactic Bulge [PDF]
The Astrophysical Journal, 2005 Recent observations and theories suggest that extreme horizontal branch (EHB) stars and their progeny should be the cause of the UV excess seen in the spectra of many elliptical galaxies. Since the Galactic Bulge is the closest representation of an old, metal-rich spheroid in which we are able to study the EHB scenario in detail, we obtained spectra of
Busso, Giorgia +4 more
openaire +3 more sources
The fastest hot subdwarfs revisited
Bulletin de la Société Royale des Sciences de Liège, 2023 9 page, 6 figures, accepted for publication in Bulletin de la Societ Royale des Sciences de Liege, poceedings of the conference "10th Meeting on Hot Subdwarfs and Related Objects"
MUCHFUSS collaboration, Ulrich Heber
openaire +3 more sources
Remnants of Subdwarf Helium Donor Stars Ejected from Close Binaries with Thermonuclear Supernovae [PDF]
Astrophysical Journal, 2019 Some binary systems composed of a white dwarf (WD) and a hot subdwarf (sdB) helium star will make contact within the helium burning lifetime of the sdB star.
E. Bauer, C. White, L. Bildsten
semanticscholar +1 more source
Asteroseismology of Pulsating sdB Stars Observed at Catania Astrophysical Observatory
Open Astronomy, 2003 We present analysis of the data collected during three years of photometric campaigns at the 91 cm Cassegrain telescope of the Catania Astrophysical Observatory to observe the pulsating subdwarf B star PG 1336-018.
Bonanno A. +5 more
doaj +1 more source
Evidence of Resonant Mode Coupling in the Hot B Subdwarf Star KIC 10139564
EPJ Web of Conferences, 2015 The Kepler spacecraft provides new opportinuties to observe long term frequency and amplitude modulations of oscillation modes in pulsating stars. We analyzed more than three years of uninterrupted data obtained with this instrument on the hot B subdwarf
Zong W., Charpinet S., Vauclair G.
doaj +1 more source
Hot subdwarfs in resolved binaries [PDF]
Astrophysics and Space Science, 2010 6 pages, 4 figures. Proceedings of The Fourth Meeting on Hot Subdwarf Stars and Related Objects held in China, 20-24 July 2009.
openaire +2 more sources
Spectroscopy of hot subdwarf binaries
Open Astronomy, 2018 We present a status report of our spectroscopic analysis of subdwarf binaries consisting of a subdwarf and a F/G/K-type main-sequence companion. These systems selected from SDSS photometry show significant excess in the (infra-)red which can not be ...
Kreuzer Simon +2 more
doaj +1 more source
M-subdwarf Research. II. Atmospheric Parameters and Kinematics
, 2021 We applied the revised M subdwarf classification criteria discussed in Zhang et al. to Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR7 and combined the result with the M subdwarf sample from Savcheva et al.
Shuo Zhang +14 more
semanticscholar +1 more source
Hot Subdwarf Stars Identified in Gaia DR2 with Spectra of LAMOST DR6 and DR7. II.Kinematics [PDF]
Astrophysical Journal, 2020 Combining LAMOST radial velocities with Gaia parallaxes and proper motions, we present 3D Galactic space motions and the orbits of 182 single-lined hot subdwarf stars. These stars were identified by Lei et al. in Gaia DR2 with LAMOST DR6 and DR7 spectra.
Yangping Luo, P. Németh, Qida Li
semanticscholar +1 more source