Results 11 to 20 of about 159,898 (288)

Quantitative Spectroscopy of Close Binary Stars [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractThe method of spectral disentangling has now created the opportunity for studying the chemical composition in previously inaccessible components of binary and multiple stars. This in turn makes it possible to trace their chemical evolution, a vital aspect in understanding the evolution of stellar systems. We review different ways to reconstruct
Pavlovski, Krešimir, Southworth, John
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Asteroseismology of Close Binary Stars [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractIn this review paper, we summarise the goals of asteroseismic studies of close binary stars. We first briefly recall the basic principles of asteroseismology, and highlight how the binarity of a star can be an asset, but also a complication, for the interpretation of the stellar oscillations.
Aerts, Asplund, Ausseloos, Briquet, Bruntt, Claret, Conny Aerts, De, De, De, De, Fontaine, Gamarova, Goosens, Kurtz, Lampens, Miglio, Mkrtichian, Pamyatnykh, Pigulski, Reed, Schrijvers, Telting, Unno, Willems, Zima   +25 more
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RADIAL VELOCITY STUDIES OF CLOSE BINARY STARS. XV [PDF]

The Astronomical Journal, 2006
submitted to ...
Pribulla, Theodor, Rucinski, Slavek M., Blake, R. M., Lu, Wenxian, Thomson, J. R., Debond, Heide, Karmo, Toomas, De Ridder, Archie, Ogłoza, Waldemar, Stachowski, Greg, Siwak, Michal   +10 more
core   +13 more sources

Microlensing of close binary stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
The gravity due to a multiple-mass system has a remarkable gravitational effect: the extreme magnification of background light sources along extended so-called caustic lines. This property has been the channel for some remarkable astrophysical discoveries over the past decade, including the detection and characterisation of extra-solar planets, the ...
Nicholas J Rattenbury
exaly   +3 more sources

THE CLOSE BINARY FRACTION OF DWARF M STARS [PDF]

The Astrophysical Journal, 2011
We describe a search for close spectroscopic dwarf M star binaries using data from the Sloan Digital Sky Survey (SDSS) to address the question of the rate of occurrence of multiplicity in M dwarfs. We use a template fitting technique to measure radial velocities from 145,888 individual spectra obtained for a magnitude-limited sample of 39,543 M dwarfs.
Clark, Benjamin M., Blake, Cullen H., Knapp, Gillian R.   +2 more
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Surveying Planetary Nebulae Central Stars for Close Binaries: Constraining Evolution of Central Stars Based on Binary Parameters

Galaxies, 2018
The increase in discovered close binary central stars of planetary nebulae is leading to a sufficiently large sample to begin to make broader conclusions about the effect of close binary stars on common envelope evolution and planetary nebula formation ...
Todd Hillwig
doaj   +3 more sources

Classification of close binary stars using recurrence networks [PDF]

Chaos, 2019
Close binary stars are binary stars where the component stars are close enough such that they can exchange mass and/or energy. They are subdivided into semidetached, overcontact, or ellipsoidal binary stars. A challenging problem in the context of close binary stars is their classification into these subclasses based solely on their light curves ...
Sandip V George, G Ambika
exaly   +5 more sources

CLOSE-IN STELLAR COMPANIONS IN CLOSE BINARY STARS

Publications of the Korean Astronomical Society, 2015
Close binary stars are so close that one component has an effect on the evolution of the other. But how do they form and evolve? This is an unsolved problem. One speculation is that the binary is a part of a hierarchical triple and its orbit shrinks due to interaction with the third component.
FIRST M. WENPING LIAO, SHENGBANG QIAN, LIYING ZHU, LIANG LIU   +3 more
exaly   +3 more sources

Disks in close binary stars [PDF]

Astronomy & Astrophysics, 2021
Context. Close binaries (abin ≤ 20 au) are known to harbor planets, yet planet formation is unlikely to succeed in such systems. Studying the dynamics of disks in close binaries can help to understand how those planets could have formed. Aims. We study the impact that numerical and physical parameters have on the dynamics of disks in close binaries. We
Jordan L. M., Kley W., Picogna G., Marzari F.   +3 more
openaire   +2 more sources

V1507 CYGNI (HD187399): A Highly Evolved, Enigmatic Interacting Binary System with an Eccentric Orbit

The Astronomical Journal, 2023
The properties of the interacting, eccentric orbit binary V1507 Cyg (HD187399) are examined with spectra that cover wavelengths from 0.63–0.68 μ m. The spectrum of the brightest star is similar to that of the B8 I star β Ori, although with absorption ...
T. J. Davidge
doaj   +1 more source