Results 31 to 40 of about 1,877,533 (362)
A Cooling Anomaly of High-mass White Dwarfs [PDF]
Astrophysical Journal, 2019 Recently, the power of Gaia data has revealed an enhancement of high-mass white dwarfs (WDs) on the Hertzsprung–Russell diagram, called the Q branch.
Sihao 浩 Cheng 程思 +2 more
semanticscholar +1 more source
Analysis of Helium-rich White Dwarfs Polluted by Heavy Elements in the Gaia Era [PDF]
Astrophysical Journal, 2019 We present an analysis of 1023 DBZ/DZ(A) and 319 DQ white dwarf stars taken from the Montreal White Dwarf Database. This represents a significant increase over the previous comprehensive studies on these types of objects.
S. Coutu +8 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
English as an additional language (EAL): Decolonising provision and practice
The Curriculum Journal, Volume 34, Issue 1, Page 62-82, March 2023., 2023 Abstract This paper examines ways in which approaches to English as Additional Language (EAL) can be decolonised in schools. In an attempt to break traditional divides between academic research and pedagogical practice in this area, this article adopts a collaborative perspective, between an EAL advisory and support teacher and an academic member of ...
Oakleigh Welply
wiley +1 more source
Generalized uncertainty principle, black holes, and white dwarfs: a tale of two infinities [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 It is often argued that quantum gravitational correction to the Heisenberg's uncertainty principle leads to, among other things, a black hole remnant with finite temperature.
Yen Chin Ong
semanticscholar +1 more source
International Journal of Eating Disorders, Volume 55, Issue 12, Page 1753-1764, December 2022., 2022 Abstract Objective This study aimed to report the presence of categorical and dimensional personality disorders (PD) in adults with longstanding eating disorders (ED) over a period of 17 years and to investigate whether changes in PD predict changes in ED symptoms or vice versa.
Hanna Punsvik Eielsen +4 more
wiley +1 more source
Universe, 2023 In 1995, Glendenning, Kettner and Weber postulated the existence of a new class of compact stars resembling white dwarfs but containing a small strange quark-matter core surrounded by hadronic layers attaining much higher densities than those found in ...
Loïc Perot, Nicolas Chamel
doaj +1 more source
A New Generation of Cool White Dwarf Atmosphere Models. IV. Revisiting the Spectral Evolution of Cool White Dwarfs [PDF]
Astrophysical Journal, 2019 As a result of competing physical mechanisms, the atmospheric composition of white dwarfs changes throughout their evolution, a process known as spectral evolution.
S. Blouin +3 more
semanticscholar +1 more source
International Astronomical Union Colloquium, 1994 It is the intention of this review to explain what white dwarfs are and why it is interesting to study them, and why the H+2molecule is of special interest.The evolution, from start to finish, of a star of mass less than about 2 solar masses (M⊙), can roughly be summarized as follows:–A cloud of gas contracts from the interstellar medium until hydrogen
openaire +1 more source
Supernovae sparked by dark matter in white dwarfs [PDF]
Physical Review D, 2019 It was recently demonstrated that asymmetric dark matter can ignite supernovae by collecting and collapsing inside lone sub-Chandrasekhar mass white dwarfs, and that this may be the cause of Type Ia supernovae.
Javier F. Acevedo, J. Bramante
semanticscholar +1 more source