Results 11 to 20 of about 45,127 (299)
The VLT-FLAMES Tarantula Survey XXI. Stellar spin rates of O-type spectroscopic binaries [PDF]
The Astronomical Journal, 2015 The initial distribution of spin rates of massive stars is a fingerprint of their elusive formation process. It also sets a key initial condition for stellar evolution and is thus an important ingredient in stellar population synthesis.
de Koter, A. +11 more
core +10 more sources
Binary Star Orbits. VI. The Interferometric-spectroscopic Binary 73 Leo
The Astronomical JournalDiscordances in radial-velocity measurements of 73 Leonis, made more than a century ago, gave rise to the first suggestion that this fifth-magnitude star was a binary system, but it was 40 yr before an accurate investigation of the object commenced, and ...
Brian D. Mason +9 more
doaj +2 more sources
The Smallest Mass Ratio Young Star Spectroscopic Binaries [PDF]
The Astrophysical Journal, 2002 Using high resolution near-infrared spectroscopy with the Keck telescope, we have detected the radial velocity signatures of the cool secondary components in four optically identified pre-main-sequence, single-lined spectroscopic binaries.
Baraffe I. +12 more
core +5 more sources
Spectroscopic Orbits of Subsystems in Multiple Stars. IX
The 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
New spectroscopic binaries among nearby stars [PDF]
Astronomy & Astrophysics, 2003 In the course of surveying a large number of nearby ( ≈ 50 pc or less) stars for indicators of youth, we have discovered a number of hitherto unknown spectroscopic binaries. Here we present a list of these new binaries with pertinent data. Two of these (HD 143705 and HD 89959) have been observed six times each, and their respective radial velocity ...
R. Wichmann +2 more
openaire +1 more source
Statistical Investigation of Spectroscopic Binary Stars [PDF]
Symposium - 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
A. V. Tutukov, L. R. Yungelson
openaire +1 more source
Asteroseismology of binary stars and a compilation of core overshoot and rotational frequency values of OB stars [PDF]
, 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]
, 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
Spectroscopic Orbits of Subsystems in Multiple Stars. X (Summary)
The 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 properties of spectroscopic binary stars [PDF]
Astrophysics and Space Science, 1992 As part of a study of the mass-ratio distribution of spectroscopic binary stars, the statistical properties of the systems in the Eighth Catalogue of the Orbital Elements of Spectroscopic Binary Stars, compiled by Batten et al. (1989), are investigated.
openaire +3 more sources