Results 211 to 220 of about 36,595 (260)

Response to the COVID-19 Outbreak in Urban Settings in China

open access: yes, 2020
Ni Z   +11 more
europepmc   +1 more source

VY Scl-type cataclysmic variable SDSS J154453.60+255348.8: stellar and disk parameters

Monthly notices of the Royal Astronomical Society, 2023
We present a new study of the eclipsing cataclysmic variable SDSS J154453.60+255348.8 to determine the object’s nature and its system parameters together with the probe of the accretion flow structure in the system.
A. L. M. Rodriguez   +5 more
semanticscholar   +1 more source

Timing analysis of a sample of five cataclysmic variable candidates observed by the XMM-Newton satellite

Monthly notices of the Royal Astronomical Society, 2022
Intermediate polars are a class of cataclysmic variables in which a white dwarf accretes material from a companion star. The intermediate polar nature confirmation usually derives from the detection of two periods in both X-ray and optical photometry ...
A. Nucita   +6 more
semanticscholar   +1 more source

Detection of Eclipses in the Cataclysmic Variable LAMOST J035913.61 + 405035.0

Astronomical Notes - Astronomische Nachrichten
I conducted photometric observations of the cataclysmic variable LAMOST J035913.61 + 405035.0 and detected eclipses. During these observations, I recorded 14 eclipses over two groups of nights separated by 13 months.
V. Kozhevnikov
semanticscholar   +1 more source

Resolution of a paradox: SDSS J1257+5428 can be explained as a descendant of a cataclysmic variable with an evolved donor

Astronomy & Astrophysics
The binary system SDSS,J1257+5428 consists of an extremely low-mass white dwarf (WD) with a mass ranging from ∼0.1 $ to $ ∼0.24 along with a more massive WD companion of approximately $1$ that is significantly hotter.
D. Belloni, M. Schreiber, K. El-Badry
semanticscholar   +1 more source

Three unusual cataclysmic variable stars

Nature, 1983
A recent survey for variable objects1 using an automated search procedure detected a number of variables for which it was only possible to give a preliminary classification. Many of the sample have now been observed spectroscopically on a large telescope and definite classifications made.
openaire   +1 more source

Cataclysmic Variable Stars

1995
The study of cataclysmic variables - interacting binary stars containing a white dwarf accreting from an orbiting companion - is undergoing an exciting renaissance, as it embraces observations at all wavelengths. Cataclysmic variables allow, in particular, the direct and detailed study of equilibrium and non-equilibrium accretion discs; in turn these ...
openaire   +1 more source

Introduction to Cataclysmic Variable Stars

2016
Cataclysmic Variables are semi-detached binaries consisting of a White Dwarf that accretes material from a companion star (usually a Red Dwarf) that transfers matter to the White Dwarf. In this chapter I give a description of cataclysmic variable stars, their composition, classification and spectral characteristics.
openaire   +1 more source

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