Results 31 to 40 of about 1,989,293 (378)
Asteroseismic Study of KUV03442+0719 with Parallax Constraints
The Astrophysical Journal, 2023 Hydrogen atmosphere white dwarf KUV03442+0719 was first reported as a pulsator by Gianninas et al. in 2006. Follow-up campaigns by Su et al. revealed more periods.
Agnes Bischoff-Kim
doaj +1 more source
Predicting the LISA white dwarf binary population in the Milky Way with cosmological simulations [PDF]
Monthly notices of the Royal Astronomical Society, 2019 White dwarf binaries with orbital periods below 1 h will be the most numerous sources for the space-based gravitational wave detector Laser Interferometer Space Antenna (LISA).
A. Lamberts +5 more
semanticscholar +1 more source
A planetesimal orbiting within the debris disc around a white dwarf star [PDF]
Science, 2019 A low-mass planet around a white dwarf Numerous exoplanets have been detected around Sun-like stars. These stars end their lives as white dwarfs, which should inherit any surviving planetary systems. Manser et al.
C. Manser +31 more
semanticscholar +1 more source
Magnetism in white Dwarfs [PDF]
Symposium - International Astronomical Union, 1971 Searches have been made for the normal and quadratic Zeeman effect and broad-band circular polarization in white dwarf stars. A positive effect has been found in Grw + 70°8247 whose continuum shows both linear and circular polarization.
J. D. Landstreet, J. R. P. Angel
openaire +2 more sources
Detached white-dwarf close-binary stars -- CV's extended family [PDF]
, 1999 I review detached binaries consisting of white dwarfs with either other white dwarfs or low mass main-sequence stars in tight orbits around them. Orbital periods have been measured for 15 white dwarf/white dwarf systems and 22 white dwarf/M dwarf systems.
Marsh, T. R.
core +3 more sources
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
Barium and related stars, and their white-dwarf companions [PDF]
Astronomy & Astrophysics, 2019 Barium (Ba) dwarfs and CH subgiants are the less evolved analogues of Ba and CH giants. They are F- to G-type main-sequence stars polluted with heavy elements by their binary companions when the companion was on the asymptotic giant branch (AGB).
A. Escorza +14 more
semanticscholar +1 more source
DETECTION OF A WHITE DWARF COMPANION TO THE WHITE DWARF SDSSJ125733.63+542850.5 [PDF]
The Astrophysical Journal, 2011 SDSSJ125733.63+542850.5 (hereafter SDSSJ1257+5428) is a compact white dwarf binary from the Sloan Digital Sky Survey that exhibits high-amplitude radial velocity variations on a period of 4.56 hours. While an initial analysis suggested the presence of a neutron star or black-hole binary companion, a follow-up study concluded that the spectrum was ...
L. Merry +6 more
openaire +4 more sources
The mass and radius of the M dwarf companion to GD 448 [PDF]
, 1998 We present spectroscopy and photometry of GD 448, a detached white dwarf - M dwarf binary with a period of 2.47h. We find that the NaI 8200A feature is composed of narrow emission lines due to irradiation of the M dwarf by the white dwarf within broad ...
Dhillon, V. S. +4 more
core +5 more sources
The Gaia 20 pc white dwarf sample [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Using Gaia DR2 data, we present an up-to-date sample of white dwarfs within 20 pc of the Sun. In total we identified 139 systems in Gaia DR2, nine of which are new detections, with the closest of these located at a distance of 13.05 pc.
M. Hollands +4 more
semanticscholar +1 more source