Results 21 to 30 of about 10,397 (194)
The Astronomical Journal, 2023 Accretion of mass onto a white dwarf (WD) in a binary system can lead to stellar explosions. If a WD accretes from stellar wind of a distant evolved giant in a symbiotic binary, it can undergo occasional outbursts in which it brightens by several ...
Augustin Skopal
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High spectral resolution time-resolved optical spectroscopy of V893 Sco [PDF]
, 2001 We present high resolution time-resolved optical spectra of the high inclination short orbital period dwarf nova V893 Sco. We performed spectral analysis through radial velocity measurements, Doppler mapping, and ratioed Doppler maps.
E. Mason +12 more
core +2 more sources
Imaging the Secondary Stars in Cataclysmic Variables [PDF]
, 2001 The secondary, Roche-lobe filling stars in cataclysmic variables (CVs) are key to our understanding of the origin, evolution and behaviour of this class of interacting binary. We review the basic properties of the secondary stars in CVs and the observational and analysis methods required to detect them.
Dhillon, V.S., Watson, C.A.
openaire +3 more sources
Gravitational Wave Emission by Cataclysmic Variables: numerical models of semi-detached binaries [PDF]
, 2001 Gravitational wave emission is considered to be the driving force for the evolution of short-period cataclysmic binary stars, making them a potential test for the validity of General Relativity.
Rezzolla, Luciano +2 more
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CCD-PHOTOMETRY OF CATACLYSMIC VARIABLE ES DRA IN 2001
Odessa Astronomical Publications, 2017 On the base of our 34-day photometry of ES Dra we found its ∼ 20 d light variations with amplitude of 1m.6 and suggest this star could belong to the nova-like subclass of cataclysmic variable stars.
A. V. Baklanov +2 more
doaj +1 more source
Variable stars in the open cluster NGC 6791 and its surrounding field [PDF]
, 2007 Aims: This work presents a high--precision variability survey in the field of the old, super metal-rich open cluster NGC 6791. Methods: The data sample consists of more than 75,000 high-precision CCD time series measurements in the V band obtained ...
Bedin, L. R. +9 more
core +1 more source
SDSS J142625.71+575218.3: A Prototype for A New Class of Variable White Dwarf [PDF]
, 2008 We present the results of a search for pulsations in six of the recently discovered carbon-atmosphere white dwarf ("hot DQ") stars. On the basis of our theoretical calculations, the star SDSS J142625.71 + 575218.3 is the only object expected to pulsate ...
DeGennaro, Steven +5 more
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Disc–magnetosphere interactions in cataclysmic variable stars [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractI review, from an observational perspective, the interactions of accretion discs with magnetic fields in cataclysmic variable stars. I start with systems where the accretion flows via a stream, and discuss the circumstances in which the stream forms into an accretion disc, pointing to stars which are close to this transition.
openaire +2 more sources
The winds in cataclysmic variable stars [PDF]
AIP Conference Proceedings, 1986 Ultraviolet spectrophotometry of two dwarf novae, CN Ori and RX And, at various phases of their outburst cycles, confirms that the far UV flux increases dramatically about 1–2 days after the optical outburst begins. At this time the UV spectral line profiles indicate the presence of a high velocity wind.
France A. Córdova +2 more
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Finding the most variable stars in the Orion Belt with the All Sky Automated Survey [PDF]
, 2010 We look for high-amplitude variable young stars in the open clusters and associations of the Orion Belt. We use public data from the ASAS-3 Photometric V-band Catalogue of the All Sky Automated Survey, infrared photometry from the 2MASS and IRAS ...
Acke +137 more
core +3 more sources