1 Chemical evolution of a 1.15 M☉ white dwarf. The 16O and 22Ne mass-fraction abundance profiles are shown at four different stages in the evolution of the star. Extended Data Fig. 2 Distance distribution of white dwarfs. Only high-confidence white dwarf candidates (PWD ≥ 0.9) in ...
stars: white dwarfsExisting photometry of the magnetic helium-rich white dwarf Feige 7 is used to derive the parameters $T_\\mathrm{eff}=18\\,480$ K and log $\\;g=8.74$ and a frequency of variability of 10.94192 d $^{-1}$ (period 2.19340 h). New time-series phot...
White dwarf star, any of a class of faint stars representing the endpoint of the evolution of intermediate- and low-mass stars. White dwarf stars are characterized by a low luminosity, a mass on the order of that of the Sun, and a radius comparable to th
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A dense 0.1-solar-mass star in a 51-minute-orbital-period eclipsing binary Article 05 October 2022 A rotating white dwarf shows different compositions on its opposite faces Article 19 July 2023 A helium-burning white dwarf binary as a supersoft X-ray source Article Open access 22 March...
01:42 astronomers have for the first time discovered a star with a super strong magnetic field in the milky way. the newly found space object, about 4,200 light-years away from our solar system, is likely a magnetar or white dwarf...
Dwarf star, any star of average or low luminosity, mass, and size. Important subclasses of dwarf stars are white dwarfs (see white dwarf star) and red dwarfs. Dwarf stars include so-called main-sequence stars, among which is the Sun. The colour of dwarf
white dwarfn.[天]白矮星 white star白星 red dwarf star红矮星 white blue dwarf蓝白矮星 flickering white dwarf闪变白矮星 nonrotating white dwarf无自转白矮星 red white dwarf红白矮星 相似单词 dwarfn.[C] 1.(神话中有魔法的)小矮人 2.[sometimes offensive]矮子;侏儒 adj. [only before noun](植物或...
An illustration of a white dwarf star drawing matter from a red giant.NASA It was previously believed that supersoft X-rays were only observed when nuclear fusion was occurring in white dwarfs. But in the case of ASASSN-16oh, the uneven distribution of the X-rays in addition to the optica...
Conclusions: The observed modulations are the clearest hints of nonlinear resonant couplings occurring in white dwarf stars identified so far. These should resonate as a warning to projects that aim at measuring the evolutionary cooling rate of KIC 08626021, and of white dwarf stars in general. ...