General relativistic effects in the structure of massive white dwarfs
Sign Up to like & getrecommendations! Published in 2018 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-018-2354-8
Abstract: In this work we investigate the structure of white dwarfs using the Tolman–Oppenheimer–Volkoff equations and compare our results with those obtained from Newtonian equations of gravitation in order to put in evidence the importance of… read more here.
Keywords: dwarfs; white dwarfs; massive white; radius ... See more keywords
A pulsating white dwarf in an eclipsing binary
Sign Up to like & getrecommendations! Published in 2020 at "Nature Astronomy"
DOI: 10.1038/s41550-020-1037-z
Abstract: White dwarfs are the burnt-out cores of Sun-like stars and are the fate of 97 per cent of the stars in our Galaxy. The internal structure and composition of white dwarfs are hidden by their… read more here.
Keywords: pulsating white; white dwarfs; eclipsing binary; white dwarf ... See more keywords
A measurement of the equation of state of carbon envelopes of white dwarfs
Sign Up to like & getrecommendations! Published in 2020 at "Nature"
DOI: 10.1038/s41586-020-2535-y
Abstract: White dwarfs represent the final state of evolution for most stars1–3. Certain classes of white dwarfs pulsate4,5, leading to observable brightness variations, and analysis of these variations with theoretical stellar models probes their internal structure.… read more here.
Keywords: state; white dwarf; white dwarfs; equation state ... See more keywords
Importance of fingering convection for accreting white dwarfs in the framework of full evolutionary calculations: the case of the hydrogen-rich white dwarfs GD 133 and G 29-38
Sign Up to like & getrecommendations! Published in 2017 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201630094
Abstract: Context. A large fraction of white dwarfs show photospheric chemical composition that is polluted by heavy elements accreted from a debris disk. Such debris disks result from the tidal disruption of rocky planetesimals that have… read more here.
Keywords: white dwarfs; accretion; fingering convection; convection ... See more keywords
Double detonations of sub-MCh CO white dwarfs: variations in Type Ia supernovae due to different core and He shell masses
Sign Up to like & getrecommendations! Published in 2021 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202039954
Abstract: Sub-Chandrasekhar mass carbon-oxygen white dwarfs with a surface helium shell have been proposed as progenitors of Type Ia supernovae (SNe Ia). If true, the resulting thermonuclear explosions should be able to account for at least… read more here.
Keywords: core shell; white dwarfs; different core; shell ... See more keywords
Properties of white dwarfs in Einstein-Λ gravity
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2019/02/040
Abstract: In this paper, we explore the properties of white dwarfs with the modified TOV equation in Einstein-$\Lambda$ gravity, the equilibrium configurations predict a maximum mass limit for white dwarfs same as the Chandrasekhar limit when… read more here.
Keywords: white dwarfs; properties white; einstein; white dwarf ... See more keywords
X-Ray Emissions from Accreting White Dwarfs: A Review
Sign Up to like & getrecommendations! Published in 2017 at "Publications of the Astronomical Society of the Pacific"
DOI: 10.1088/1538-3873/aa6736
Abstract: Interacting binaries in which a white dwarf accretes material from a companion - cataclysmic variables (CVs) in which the mass donor is a Roche-lobe filling star on or near the main sequence, and symbiotic stars… read more here.
Keywords: emissions accreting; accreting white; white dwarfs; dwarfs review ... See more keywords
Black dwarf supernova in the far future
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa2262
Abstract: In the far future long after star formation has ceased the universe will be populated by sparse degenerate remnants, mostly white dwarfs, though their ultimate fate is an open question. These white dwarfs will cool… read more here.
Keywords: dwarfs; white dwarfs; far future; supernova ... See more keywords
Convection and rotation boosted prescription of magnetic braking: application to the formation of extremely low-mass white dwarfs
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab1916
Abstract: Extremely low-mass white dwarfs (ELM WDs) are the result of binary evolution in which a low-mass donor star is stripped by its companion leaving behind a helium-core white dwarf (WD). We explore the formation of… read more here.
Keywords: extremely low; convection rotation; white dwarfs; mass ... See more keywords
New insight into the magnetism of degenerate stars from the analysis of a volume-limited sample of white dwarfs
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab2046
Abstract: Many stars evolve into magnetic white dwarfs (MWDs), and observations may help to understand when the magnetic field appears at the stellar surface, if and how it evolves during the cooling phase, and, above all,… read more here.
Keywords: degenerate stars; white dwarfs; wds; volume ... See more keywords
Birth of the ELMs: a ZTF survey for evolved cataclysmic variables turning into extremely low-mass white dwarfs
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab2583
Abstract: We present a systematic survey for mass-transferring and recently-detached cataclysmic variables (CVs) with evolved secondaries, which are progenitors of extremely low mass white dwarfs (ELM WDs), AM CVn systems, and detached ultracompact binaries. We select… read more here.
Keywords: extremely low; white dwarfs; mass; mass white ... See more keywords