Results 111 to 120 of about 73,128 (295)
A White Dwarf Catalog from LAMOST DR11 Using Deep Learning
The Astrophysical Journal Supplement SeriesWhite dwarfs, also referred to as degenerate dwarfs, represent the ultimate fate for the majority of stars in the Universe, unless their mass is large enough for them to evolve into black holes or neutron stars.
Shengwen Zhang, Yanxia Zhang, Chao Liu
doaj +1 more source
There are a few different mechanisms that can cause white dwarf stars to vary in brightness, providing opportunities to probe the physics, structures, and formation of these compact stellar remnants. The observational characteristics of the three most common types of white dwarf variability are summarized: stellar pulsations, rotation, and ellipsoidal ...
openaire +2 more sources
Cool versus Ultracool White Dwarfs [PDF]
The Astronomical Journal, 2005 9 pages, 4 figures, 1 table, accepted to ...
openaire +3 more sources
The neutrino emission due to plasmon decay and neutrino luminosity of white dwarfs
, 2007 One of the effective mechanisms of neutrino energy losses in red giants, presupernovae and in the cores of white dwarfs is the emission of neutrino-antineutrino pairs in the process of plasmon decay. In this paper, we numerically calculate the emissivity
Braaten, E. M. Kantor, M. E. Gusakov
core +1 more source
Composition and Functional Properties of Tender Coconut Water: Effect of Variety and Maturity Stage
Future Postharvest and Food, EarlyView.The study highlights the effect of coconut variety and maturity stage on tender coconut water's composition and functional properties. Sugars, enzyme activities, antioxidant levels, mineral profile, and flavor profile vary across stages, affecting quality.
Raja Vijayakumar +6 more
wiley +1 more source
, 2010 White dwarfs are almost completely degenerate objects that cannot obtain energy from the thermonuclear sources and their evolution is just a gravothermal process of cooling.
Catalan, S. +4 more
core +1 more source
Journal of Addictions &Offender Counseling, EarlyView.ABSTRACT This study analyzed whether religious or spiritual affiliation and therapy enrollment protect against symptoms meeting Major Depressive Disorder criteria beyond demographic, Internet addiction, and described therapy enrollment. Findings illustrated one risk factor and one protective factor associated with experiencing symptoms that meet Major ...
Lindsay A. Lundeen, John R. McCall
wiley +1 more source
Five New Sirius-like White Dwarf–Main-sequence Star Systems with MagAO-X
The Astronomical JournalMost known white dwarfs in multiple systems with main-sequence stars have been discovered with M-type companions, because the white dwarf causes detectable UV excess and bluer colors than expected from a single M star.
Logan A. Pearce +22 more
doaj +1 more source
White Dwarf Cooling Curves and Searches For White Dwarfs [PDF]
Highlights of Astronomy, 1998 White dwarf (WD) evolution is essentially a cooling problem in two parts. Degenerate electrons in the core provide the support while non-degenerate C and O ions provide the thermal reservoir (Koester & Chanmugam 1990, Kawaler 1996). The rate of energy loss through the non-degenerate envelope of H and He—segregated by gravitational settling—is ...
openaire +1 more source
Journal of Clinical Laboratory Analysis, EarlyView.Our findings indicated that the rs4245739 A>C polymorphism was not associated with BC risk in the Bangladeshi population, whereas the rs1380576 C>G polymorphism was significantly associated with BC risk. This study provides new insights into the genetic factors influencing breast cancer susceptibility in the Bangladeshi population, highlighting the ...
J. M. Aousiful Islam +7 more
wiley +1 more source