Results 21 to 30 of about 694 (118)
Mass-loss predictions for Subdwarf B stars [PDF]
Astrophysics and Space Science, 2004 8 pages, 1 figure, to appear in "Extreme Horizontal Branch Stars and Related Objects", Astrophysics and Space Science, Kluwer, ed.
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The OB-type subdwarf HD 149382 and the nature of the subdwarf B stars
The Astrophysical Journal, 1975 High-dispersion spectra and monochromatic continuum measures of the subdwarf OB star HD 149382 have been obtained and analyzed to yield the atmospheric parameters T)=40,000 K, log g=5.8. Helium is deficient by a factor 10 compared to Population I. Sulfur is the only element, other than hydrogen and helium, observed in the blue spectrum of this object ...
B. Baschek, J. Norris
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The origin of subdwarf B stars - II [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 We have carried out a detailed binary population synthesis (BPS) study of the formation of subdwarf B (sdB) stars and related objects (sdO, sdOB stars) using the latest version of the BPS code developed by Han and co-workers. We systematically investigate the importance of the five main evolutionary channels in which the sdB stars form after one or two
Han, Z +3 more
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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 evolution. Most sdB stars directly descend from former red giants and are expected to evolve straight into
Charpinet, Stéphane +5 more
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Population synthesis of Galactic subdwarf B stars [PDF]
Astrophysics and Space Science, 2010 Appeared in 2010 in Ap& ...
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A FEROS Survey of Hot Subdwarf Stars
Open Astronomy, 2018 Abstract We have completed a survey of twenty-two ultraviolet-selected hot subdwarfs using the Fiber-fed Extended Range Optical Spectrograph (FEROS) and the 2.2-m telescope at La Silla. The sample includes apparently single objects as well as hot subdwarfs paired with a bright, unresolved companion.
Vennes, S., Németh, P., Kawka, Adela
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Volume-limited sample of low-mass red giant stars, the progenitors of hot subdwarf stars I. Sample selection and binary classification method [PDF]
, 2022 Murat Uzundag +5 more
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Observational asteroseismology of hot subdwarf stars [PDF]
Astronomische Nachrichten, 2010 AbstractHot subdwarf stars are particularly challenging for asteroseismology due to their rapid pulsation periods, intrinsic faintness and relative rarity both in the field and in clusters. These features have ensured that the preferred method of observation up to now has been white‐light photometry, and all asteroseismological solutions to date have ...
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The Scale Height of Blue Halo Subdwarf B Stars [PDF]
Symposium - International Astronomical Union, 1995 Numerous blue halo stars have been discovered during the past decade (e.g. the Palomar-Green Survey). Many are horizontal branch type, being HBA, HBB, sdB, or sdO star. The sdB stars (Teff between ≈ 18 000 and ≈ 30 000 K) are the endproducts of evolution in the red-giant phase.
K.S. De Boer +3 more
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A search for variable subdwarf B stars in TESS Full Frame Images – II. Variable objects in the northern ecliptic hemisphere [PDF]
, 2021 A. S. Baran +3 more
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