Results 101 to 110 of about 154,154 (200)

Detection of Young Massive White Dwarfs in Core-collapsed Globular Cluster NGC 362

The Astrophysical Journal Letters
Core-collapsed globular clusters are ideal targets to explore the presence of stellar collision products. Here, we have studied 17 far-UV bright white dwarf (WD) members in the globular cluster NGC 362 using data obtained from the Ultra Violet Imaging ...
R. K. S. Yadav, Arvind K. Dattatrey, Annapurni Subramaniam, Geeta Rangwal, Ravi S. Singh   +4 more
doaj   +1 more source

Zeeman Doppler Imaging of τ Ceti: The Weakest Magnetic Field Detected in a Sun-like Star

The Astrophysical Journal Letters
For nearly a decade, observations have shown that many older Sun-like stars spin faster than predicted, a phenomenon known as weakened magnetic braking (WMB). The leading hypothesis for WMB is a weakening of the large-scale dipole field, which leads to a
Federica Chiti, Oleg Kochukhov, Jennifer L. van Saders, Travis S. Metcalfe   +3 more
doaj   +1 more source

Spectroscopic Characterization of WD J000801.25-350450 and Its Two Comoving Companions

The Astronomical Journal
We present new spectroscopic data for Gaia DR3 2309499817384726016 (WD 0008-350A) and its two wide, comoving, low-mass companions. We confirm the white dwarf is a hydrogen rich DA, with T _eff = 6200 ± 90 K and a mass of 0.63 ± 0.03 M _⊙ , close to that ...
Peter A. Jałowiczor, Thomas P. Bickle, J. Davy Kirkpatrick, Sarah L. Casewell, Nicola Gentile Fusillo, Adam C. Schneider, Jonathan Gagné, Jacqueline K. Faherty, Aaron M. Meisner, Marc J. Kuchner, Adam J. Burgasser, Austin Rothermich, Alexia Bravo, Michiharu Hyogo, Mark Popinchalk, Alex J. Brown, Alberto Rebassa-Mansergas, Raquel Murillo-Ojeda, The Backyard Worlds: Planet 9 Collaboration   +18 more
doaj   +1 more source

Orbital motion detected in γ Cas Fe K emission lines

Astronomy & Astrophysics
A subset of Be stars, typified by the naked-eye star γ Cas, exhibits unusually bright and hard X-ray emission, the origin of which has remained debated for five decades.
Nazé Yaël, Tsujimoto Masahiro, Rauw Gregor, Gunderson Sean J.   +3 more
doaj   +1 more source

Search for white dwarf companions of cool stars with peculiar element abundances [PDF]

A search for a white dwarf companions of cool stars with peculiar element abundances was undertaken. One additional star the xi Cet, was found with a white dwarf companion.
Boehm-Vitense, E.
core   +1 more source

A rotating white dwarf with two faces

, 2022
Caiazzo I, Burdge K, Ferrario L, Fuller J, Gänsicke B, Hermes J, Heyl J, Kawka A, Kulkarni S, Marsh T, Mroz P, Prince T, Richer H, Rodriguez A, Tremblay P, Roestel Jv, Vanderbosch Z, Vennes S, Wickramasinghe D, Dhillon V, Munday J, Littlefair S, Bellm E, Breedt E, Brown A, Dekany R, Drake A, Dyer M, Graham M, Green M, Laher R, Kerry P, Parsons S, Pelisoli I, Riddle R, Rusholme B, Sahman D.   +36 more
europepmc   +1 more source

Hubble COS Spectroscopy of the Dwarf Nova CW Mon: The White Dwarf in Quiescence? [PDF]

Astron J, 2017
Hause C, Sion EM, Godon P, Boris TG, Szkody P, de Martino D, Pala A.   +6 more
europepmc   +1 more source

Double-degenerate Carbon-Oxygen and Oxygen-Neon White Dwarf Mergers: A New Mechanism for Faint and Rapid Type Ia Supernovae. [PDF]

Astrophys J, 2018
Kashyap R, Haque T, Lorén-Aguilar P, García-Berro E, Fisher R.   +4 more
europepmc   +1 more source

A hot white dwarf merger remnant revealed by an ultraviolet detection of carbon. [PDF]

Nat Astron
Sahu S, Bédard A, Gänsicke BT, Tremblay PE, Koester D, Farihi J, Hermes JJ, Hollands MA, Cunningham T, Redfield S.   +9 more
europepmc   +1 more source

The first extragalactic ultra-compact X-ray binary: A candidate black hole-white dwarf system. [PDF]

Innovation (Camb)
Ma QQ, Zhang J, Gu WM, Li Z, Weng SS, Bao T.   +5 more
europepmc   +1 more source