Results 21 to 30 of about 172,722 (314)
Axions and the Cooling of White Dwarf Stars [PDF]
The Astrophysical Journal, 2008 White dwarfs are the end-product of the lifes of intermediate- and low-mass stars and their evolution is described as a simple cooling process. Recently, it has been possible to determine with an unprecedented precision their luminosity function, that is, the number of stars per unit volume and luminosity interval.
Silvia Catalan +3 more
openaire +3 more sources
White dwarf stars in modified gravity [PDF]
International Journal of Geometric Methods in Modern Physics, 2021 A few questions related to white dwarfs’ physics is posed. It seems that the modified gravity framework can be a good starting point to provide alternative explanations to cooling processes, their age determination, and Chandrasekhar mass limits. Moreover, we have also obtained the Chandrasekhar limit coming from Palatini [Formula: see text] gravity ...
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
A Jovian analogue orbiting a white dwarf star [PDF]
Nature, 2021 15 pages, 10 ...
C. Alard +21 more
openaire +9 more sources
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
Asteroseismology of pulsating DA white dwarfs with fully evolutionary models
EPJ Web of Conferences, 2013 We present a new approach for asteroseismology of DA white dwarfs that consists in the employment of a large set of non-static, physically sound, fully evolutionary models representative of these stars.
Althaus L.G. +3 more
doaj +1 more source
Cooling Process of White Dwarf Stars in Palatini f(R) Gravity
Universe, 2022 A simple cooling model of white dwarf stars is re-analyzed in Palatini f(R) gravity. Modified gravity affects the white dwarf structures and consequently their ages.
Surajit Kalita +2 more
doaj +1 more source
Stark Broadening and White Dwarfs
Open Astronomy, 2011 White dwarf and pre-white dwarfs are the best types of stars for the application of Stark broadening research results in astrophysics, since in the atmospheres of these stars physical conditions are very favorable for this line broadening mechanism - in ...
Dimitrijević Milan S. +3 more
doaj +1 more source
The Astrophysical Journal, 2023 AllS single stars that are born with masses up to 8.5–10 M _⊙ will end their lives as white dwarf (WD) stars. In this evolutionary stage, WDs enter the cooling sequence, where the stars radiate away their thermal energy and are basically cooling.
Weston Hall +2 more
doaj +1 more source
Searching for benchmark systems containing ultra-cool dwarfs and white dwarfs
EPJ Web of Conferences, 2013 We have used the 2MASS all-sky survey and WISE to look for ultracool dwarfs that are part of multiple systems containing main sequence stars. We cross-matched L dwarf candidates from the surveys with Hipparcos and Gliese stars, finding two new systems ...
Pinfield D.J., Gomes J.I.
doaj +1 more source