Results 1 to 10 of about 127 (114)
Asteroseismology of hot B subdwarf stars [PDF]
EPJ Web of Conferences, 2013 Non-radial pulsations in Extreme Horizontal Branch stars (also known as hot B subdwarfs or sdB stars) offer strong opportunities to study, through asteroseismology, the structure and internal dynamics of stars in this intermediate stage of stellar ...
Fontaine G. +5 more
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Classification of LAMOST spectra of B-type and hot subdwarf stars using kernel support vector machine [PDF]
Scientific ReportsMachine learning has emerged as a leading field in artificial intelligence, demonstrating expert-level performance in various domains. Astronomy has benefited from machine learning techniques, particularly in classifying and identifying stars based on ...
Muhammad Tahir +5 more
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Population synthesis of Galactic subdwarf B stars [PDF]
Astrophysics and Space Science, 2010 Appeared in 2010 in Ap& ...
G Nelemans, Nelemans G
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The origin of subdwarf B stars – I. The formation channels [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 20 pages, 23 figures, accepted for publication in ...
Zhanwen Han +2 more
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On the 3He anomaly in hot subdwarf B stars
Open Astronomy, 2017 Decades ago, 3He isotope enrichment in helium-weak B-type main-sequence, in blue horizontal branch and in hot subdwarf B (sdB) stars, i.e., helium-core burning stars of the extreme horizontal branch, were discovered. Diffusion processes in the atmosphere
Schneider David +4 more
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Tidal Spin-up of Subdwarf B Stars
The Astrophysical JournalHot subdwarf B (sdB) stars are stripped helium-burning stars that are often found in close binaries, where they experience strong tidal interactions. The dissipation of tidally excited gravity waves alters their rotational evolution throughout the sdB ...
Linhao Ma, Jim Fuller
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Stark Widths of Ar II Spectral Lines in the Atmospheres of Subdwarf B Stars
Atoms, 2017 Stark broadening parameters are of interest for many problems in astrophysics and laboratory plasmas investigation. Ar II spectral lines are observed in many kinds of stellar atmospheres such as the atmospheres of B-Type stars and subdwarf B stars.
Rafik Hamdi +2 more
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Hot subdwarf stars in close-up view [PDF]
Astronomy and Astrophysics, 2013 Context: Hot subdwarf B stars (sdBs) are considered to be core helium-burning stars with very thin hydrogen envelopes situated on or near the extreme horizontal branch (EHB). The formation of sdBs is still unclear as well as the chemical composition of their atmospheres. The observed helium depletion is attributed to atmospheric diffusion.
S Geier
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Hot subdwarf B stars with neutron star components [PDF]
Astronomy & Astrophysics, 2020 Context. Subdwarf B stars (sdBs) play a crucial role in stellar evolution, asteroseismology, and far-UV radiation of early-type galaxies, and have been intensively studied with observation and theory. It has theoretically been predicted that sdBs with neutron star (NS) companions exist in the Galaxy, but none have been discovered yet.
You Wu +4 more
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The Formation of Subdwarf B Stars [PDF]
International Astronomical Union Colloquium, 2002 AbstractWe performed full binary evolution calculations and carried out binary population synthesis studies in order to investigate the formation of subdwarf B (sdB) stars via the channels of stable Roche lobe overflow (RLOF), common envelope ejection and helium white dwarf mergers. Our model is successful in the explanation of observational properties
Han, Z +4 more
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