WebJun 28, 2024 · A thermonuclear supernova is the explosion of a white dwarf star after it gains matter in a binary star system. These white dwarfs are the dense cores of ash that remain after a low-mass star (one up to about 8 times … WebWhen you introduce a binary to the potential BAG scenario, things get more complicated. Discrepancies in chemical traces, such as higher than expected neon levels and low carbon-to-oxygen levels, pointed to an ONeMg (oxygen-neon-magnesium) white dwarf at the heart of this event (Lau 1871).
A white dwarf with an oxygen atmosphere Science
WebA star that has a mass of about 8-12 solar masses will ignite carbon fusion to form magnesium, neon, and smaller amounts of other elements, resulting in a white dwarf composed chiefly of oxygen, neon, and magnesium, … WebMar 31, 2016 · While oxygen dominates this white dwarf’s atmosphere, neon and magnesium come in second and third — a clue that the original star was much bigger than our sun. Big stars can crank up... collab conference speaker
A promising formation channel for symbiotic X-ray binaries: cases …
Webto eject material rich in oxygen, neon, magnesium, and aluminum at high velocities. We propose that for this class of novae the outburst is occurring not on a carbon-oxygen … The solid red curve in Fig. 4 was calculated assuming that the core composition of the white dwarf is homogeneous and that all the sodium currently at densities above the threshold for electron capture has already undergone inverse beta decay, and similarly for magnesium and neon. As the sedimentation … See more Our search for periodicity in massive white dwarfs was part of a broader search for periodic variability on and around the white dwarf cooling track with ZTF, which has already yielded several results, including finding … See more To derive the mass of the white dwarf, we computed the mass–radius relation using an equation of state that includes Coulomb corrections to the pressure and energy of a … See more At low magnetic field strengths, the effect of magnetic field on hydrogen transitions can be calculated as a perturbation to the zero-field electron … See more To determine the radius and effective temperature of ZTF J1901+1458, we made use of the available Pan-STARRS18 photometry and the Gaia9,38 parallax. In addition, we obtained … See more WebMar 31, 2016 · While oxygen dominates this white dwarf’s atmosphere, neon and magnesium come in second and third — a clue that the original star was much bigger than … colla barber shop boardman