Results 131 to 140 of about 276,909 (151)

New White Dwarfs, Subdwarfs, and Binary Stars.

The Astrophysical Journal, 1940
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MESA inlists for: "A new route to massive hot subdwarfs: common envelope ejection from asymptotic giant branch stars"

Zhenwei Li, Yangyang Zhang, Hailiang Chen, Hongwei Ge, Dengkai Jiang, Jiangdan Li, Xuefei Chen, Zhanwen Han   +7 more
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Ultracam Photometry of Pulsating Subdwarf B Stars rf B Binaries in the Edinburgh-Cape Survey

, 2006
C. S. Jeffery, C. Aerts, V. S. Dhillon, T. R. Marsh, L. Morales‐Rueda, P. F. L. Maxted, D. Kilkenny, D. O’Donoghue   +7 more
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Multicomponent stellar wind from hot subdwarfs stars

Astrophysics and Space Science, 2010
Stellar wind from hot subdwarf stars is mainly accelerated by the interaction of ultraviolet photospheric radiation with metals, mainly oxygen. Absorbing ions share momentum through Coulombic collisions with the remaining passive part of the plasma (namely protons).
V. Votruba, A. Feldmeier, J. Krtička, J. Kubát   +3 more
semanticscholar   +3 more sources

The Arizona-Montréal Spectroscopic Survey of hot subluminous stars

Astronomy & Astrophysics
Hot subdwarf B (sdB) and O (sdO) type stars are evolved helium-burning objects that lost their hydrogen envelope before the helium flash when their progenitors were close to the tip of the red giant branch (RGB).
M. Latour, E. M. Green, M. Dorsch, V. Grootel, P. Chayer, S. Charpinet, U. Heber, S. Randall, X.-Y. Ma   +8 more
semanticscholar   +1 more source

Subdwarf B–Stars and Binarity

1993
Spectroscopic and photometric data give evidence for a large fraction of binary stars among hot subdwarfs. Since our work aims at determining atmospheric parameters and distances of sdB and sdOB stars, we have to take special care of this aspect. We try to deconvolve the photometric data and derive colours for the subdwarf component of the binary.
A. Theissen, K. S. Boer, S. Moehler, U. Heber   +3 more
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Pulsations in subdwarf B stars

Journal of Astrophysics and Astronomy, 2005
Subdwarf B stars play a significant role in close binary evolution and in the hot star content of old stellar populations, in particular in giant elliptical galaxies. While the question of their origin poses several problems for stellar evolution theory, one of their most fascinating properties is the presence of multi-periodic 2–3 minute oscillations.
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The pulsations in subdwarf B stars

Astronomische Nachrichten, 2001
In this paper, I review our present knowledge of the pulsation phenomenon that affects a fraction of the subdwarf B (sdB) stars. The observed properties of this recently discovered class of pulsating stars are summarized and the current status of the theory explaining the driving of the observed pulsations is discussed.
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New Formation Channels of Hot Subdwarf Stars

AIP Conference Proceedings, 2010
Hot subdwarf stars, known as extreme horizontal branch stars in globular clusters, are important objects in many aspects, e.g., stellar evolution, distance indicators, Galactic Structure, and the long-standing problem of far-ultraviolet (far-UV) excess in early-type galaxies.
Zhanwen Han, Xuefei Chen, Zhenxin Lei, Vicky Kologera, Marc van der Sluys   +4 more
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Subdwarf Stars

Scientific American, 1961
null Margaret, Geoffrey Burbidge
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