Results 121 to 130 of about 34,923 (243)
Pole-On Cataclysmic Variables as Be Stars [PDF]
International Astronomical Union Colloquium, 1987 Cataclysmic-variable stars (CVs) are technically Be stars, since Balmer emission lines appear in their spectra. In general, CV spectra are so unusual that they are easily recognized. The main features are extremely broad, shallow hydrogen lines with broad, faint emission cores.
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What’s Cool About Hot Stars? Cataclysmic Variables in the Mid-Infrared [PDF]
, 2009 We review recent results from mid-infrared observations of cataclysmic variables with the Spitzer Space Telescope. In general, these observations have revealed mid-infrared excesses, above the level expected from the stellar and accretion components, in ...
Brinkworth, C. +6 more
core
The Astrophysical Journal Supplement SeriesBased mainly on the months-long 2 minutes time-resolution light curves observed by the Transiting Exoplanet Survey Telescope (TESS) space mission of 48 eclipsing old novae and novalike variables (commonly referred to as NLs) selected from the Ritter ...
Albert Bruch
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Analysis of cataclysmic variable star energy distributions
The Astronomical Journal, 1982 I analyze spectrophotometry of cataclysmic variable stars covering the wavelength range 0.32--1.1 ..mu..m. The contributions due to the cool secondary star and the accretion disk are separated, subject to the requirement that the spectrum attributed to the accretion disk be ''physically plausible.'' The results for individual stars, which are largely ...
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Studies and observations of ultraviolet and X-ray sources [PDF]
The status of research undertaken with the IUE satellite for programs on strong binary X-ray stars and X-ray globular clusters is summarized.
Fabbiano, G., Geller, M., Gursky, H.
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The Secondary Stars of Cataclysmic Variables
, 2011 I review what we know about the donor stars in cataclysmic variables (CVs), focusing particularly on the close link between these binary components and the overall secular evolution of CVs. I begin with a brief overview of the "standard model" of CV evolution and explain why the key observables this model is designed to explain - the period gap and the
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HW Bootis: an enigmatic cataclysmic variable star
, 2014 14 pages, 5 Figures.
Shears, Jeremy +8 more
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Irradiation of the companion star in cataclysmic variables [PDF]
Monthly Notices of the Royal Astronomical Society, 1989 Il est demontre que le rayonnement de l'ecoulement d'accretion au niveau de la naine blanche dans une binaire cataclysmique est incapable de penetrer la photosphere du compagnon. Le rayonnement peut, dans quelques cas, ioniser l'ecoulement d'accretion subsonique juste en dessous du point de Lagrange ...
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Resolving the Periods of the Asynchronous Polar 1RXS J083842.1–282723
The Astrophysical Journal1RXS J083842.1−282723 is a nearly synchronous magnetic cataclysmic variable with a simple X-ray light curve. While its orbital period was fairly well established at P _orb = 98.4 minutes from optical spectroscopy, indirect estimates of P _spin / P _orb ...
J. P. Halpern
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The Astrophysical JournalNonmagnetic cataclysmic variables (CVs) show two distinct X-ray components: a hard, optically thin component and a soft, optically thick, blackbody-like component, both produced in the boundary layer between the accretion disk and the white dwarf (WD ...
Nazma Islam +3 more
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