Results 21 to 30 of about 997,063 (252)

EL CVn-type binaries - discovery of 17 helium white dwarf precursors in bright eclipsing binary star systems [PDF]

open access: yes, 2014
The star 1SWASP J024743.37−251549.2 was recently discovered to be a binary star in which an A-type dwarf star eclipses the remnant of a disrupted red giant star (WASP 0247−25 B).
Southworth, J.   +34 more
core   +1 more source

Absolute dimensions of eclipsing binaries. XXVI, Setting a new standard : masses, radii, and abundances for the F-type systems AD Bootis, VZ Hydrae, and WZ Ophiuchi [PDF]

open access: yes, 2008
Context. Accurate mass, radius, and abundance determinations from binaries provide important information on stellar evolution, fundamental to central fields in modern astrophysics and cosmology. Aims.
Southworth, J.   +19 more
core   +1 more source

Turbulence in the Atmospheres of Eclipsing Binary Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1980
Abstract:A review of the orbits and dimensions of the ζ Aurigae systems is given, based on photometric and spectrographic observations. The Ca II K-line has been studied intensively to determine the extent and uneven structure of the chromospheres of these stars; the multiple structure of this line observed at several eclipses confirms the presence of ...
openaire   +1 more source

A quintuple star system containing two eclipsing binaries [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2016
13 pages, 11 figures; submitted to MNRAS on 2016, May 20, revised June ...
Rappaport, S.   +14 more
openaire   +9 more sources

HD 46407: The First Eclipsing-Binary Barium Star [PDF]

open access: yesSymposium - International Astronomical Union, 1992
A long-term, high-accuracy, differential uvby monitoring of a sample of 19 barium stars revealed that HD 46407, a well known barium star with an orbital period of 458 d, is an eclipsing binary. The eclipse (of the companion by the barium star) was most clearly seen in November 1988, when a dip of 0.02 mag (in y) having a FWHM of about 10 d was recorded
Jorissen, A.   +2 more
openaire   +3 more sources

A CONSTRUCTION OF A SEMI-AUTOMATIC TELESCOPE FOR ECLIPSE TIMING OBSERVATIONS OF ECLIPSING BINARY STARS [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2003
We constructed the photometric observation system with a small semi-automatic telescope for the systematic observations of eclipse timings of eclipsing binary stars.
Chung-Uk Lee   +3 more
doaj   +1 more source

Line of sight errors in eclipsing binary stars

open access: yes, 2022
This paper will illustrate the line of sight errors in eclipsing binary stars. Due to this error, the eclipsing binary stars will not actually along be along the line of sight when the observer sees them as eclipsing. This is due to the longer time taken
Jayaram as
core   +1 more source

Space-Based Photometry of Binary Stars: From Voyager to TESS

open access: yesUniverse, 2021
Binary stars are crucial laboratories for stellar physics, so have been photometric targets for space missions beginning with the very first orbiting telescope (OAO-2) launched in 1968.
John Southworth
doaj   +1 more source

Accurate fundamental parameters of eclipsing binary stars [PDF]

open access: yes, 2004
The study of detached eclipsing binaries is one of the most powerful ways to investigate the properties of individual stars and stellar systems. We present preliminary masses, radii and effective temperatures for the eclipsing binary WW Aurigae, which is
Maxted, Pierre   +11 more
core   +1 more source

The Amateur and Eclipsing Binary Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1988
Probably no other branch of science has benefited as much from the work of dedicated amateurs as has the science of Astronomy. While some amateurs have made many useful types of astronomical observations– comets, meteors, occultations, etc. – perhaps none has been as extensive and as useful as those made in the field of variable stars.
openaire   +1 more source

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