Results 11 to 20 of about 43,328 (216)

The Masses of Spectroscopic Binary Stars in the Sixth Catalogue [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 1968
A. H. Batten, M. W. Ovenden
openalex   +3 more sources

Spectroscopic Analyses of subluminous B stars in binaries [PDF]

open access: hybridProceedings of International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos - IX — PoS(NIC-IX), 2010
S. Geier   +4 more
openalex   +2 more sources

Spectroscopic Orbits of Subsystems in Multiple Stars. IX

open access: yesThe Astronomical Journal, 2023
New spectroscopic orbits of inner subsystems in 14 hierarchies are determined from long-term monitoring with the optical echelle spectrometer, CHIRON.
Andrei Tokovinin
doaj   +1 more source

Spectroscopic Orbits of Subsystems in Multiple Stars. X (Summary)

open access: yesThe Astronomical Journal, 2023
Results of a large program of spectroscopic monitoring of nearby solar-type stellar hierarchical systems using the CHIRON echelle spectrograph at the 1.5 m telescope are summarized.
Andrei Tokovinin
doaj   +1 more source

Statistical Investigation of Spectroscopic Binary Stars [PDF]

open access: yesSymposium - International Astronomical Union, 1980
A catalog of physical parameters of about 1000 spectroscopic binary stars (SB), based on the Batten catalog, its extensions, and newly published data has been compiled. Masses of stars′ components (M1 and M2), mass ratios of components (q = M1/M2) and orbital angular momenta are computed, wherever possible. It is probable that the initial mass function
L. R. Yungelson, A. V. Tutukov
openaire   +2 more sources

Search for a Black Hole Binary in Gaia DR3 Astrometric Binary Stars with Spectroscopic Data

open access: yesThe Astrophysical Journal, 2023
We report the discovery of a candidate binary system consisting of a black hole (BH) and a red giant branch star in Gaia DR3. This binary system was discovered from 64,108 binary solutions for which both astrometric and spectroscopic data are available ...
Ataru Tanikawa   +5 more
doaj   +1 more source

Small Mass Ratio Contact Binary GR Vir and HV Aqr [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2004
The absolute dimensions of low mass contact binary, GR Vir and HV Aqr were obtained using WD program from the published spectroscopic and photometric observational data.
Kyu-Dong Oh   +4 more
doaj   +1 more source

The Orbital and Physical Properties of Five Southern Be+sdO Binary Systems

open access: yesThe Astronomical Journal, 2023
Close binary interactions may play a critical role in the formation of the rapidly rotating Be stars. Mass transfer can result in a mass gainer star spun up by the accretion of mass and angular momentum, while the mass donor is stripped of its envelope ...
Luqian Wang   +3 more
doaj   +1 more source

Asteroseismology of binary stars and a compilation of core overshoot and rotational frequency values of OB stars [PDF]

open access: yes, 2013
After a brief introduction into the asteroseismic modelling of stars, we provide a compilation of the current seismic estimates of the core overshooting parameter and of the rotational frequency of single and binary massive stars. These important stellar
Aerts, Conny
core   +2 more sources

Line Broadening in Field Metal-poor Red Giant and Red Horizontal Branch Stars [PDF]

open access: yes, 2007
We report 349 radial velocities for 45 metal-poor field red giant and red horizontal branch stars. We have have identified one new spectroscopic binary, HD 4306, and one possible such system, HD 184711.
Alonso A.   +16 more
core   +3 more sources

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