Results 1 to 10 of about 43,803 (189)

Chemically Peculiar Stars Among Spectroscopic Binaries – Revisited [PDF]

open access: bronzeInternational Astronomical Union Colloquium, 1993
AbstractThis paper presents a new statistical investigation of peculiar A-type stars (Am, Ap, Hg-Mn) among spectroscopic binary (SB) stars. The relative frequency of Am (CP 1) stars is 55% in the spectral range A1 to A6 of main-sequence stars. The Ap (CP 2) stars amount to 15% in the range B9 to A2.
W. Seggewiß
openalex   +3 more sources

SPECTROSCOPIC METALLICITY DETERMINATIONS FOR W UMa-TYPE BINARY STARS [PDF]

open access: bronzeThe Astronomical Journal, 2013
This study is an attempt to determine the metallicities of WUMa-type binary stars using spectroscopy. ~4,500 spectra collected at the David Dunlap Observatory were subject to the same Broadening Function processing to determine the combined line strength in the spectral window centered on the MgI triplet (5080-5285A).
S. M. Ruciński, T. Pribulla, J. Budaj
openalex   +6 more sources

The Smallest Mass Ratio Young Star Spectroscopic Binaries [PDF]

open access: yesThe Astrophysical Journal, 2002
Accepted for publication in the April, 2002, ApJ; 6 ...
Tsevi Mazeh   +5 more
openaire   +7 more sources

A Survey for Spectroscopic Binaries among Very Low Mass Stars [PDF]

open access: bronzeThe Astronomical Journal, 2006
We report on the results of a survey for radial velocity variability in a heterogeneous sample of very low-mass stars and brown dwarfs. One distinguishing characteristic of the survey is its timespan, which allows an overlap between spectroscopic binaries and those which can be found by high angular-resolution imaging.
Gibor Basri, A. Reiners
openalex   +6 more sources

THREE SPECTROSCOPIC BINARY STARS. [PDF]

open access: bronzePublications of the Astronomical Society of the Pacific, 1920
Roscoe F. Sanford
openalex   +3 more sources

Binary Star Orbits. VI. The Interferometric-spectroscopic Binary 73 Leo

open access: yesThe Astronomical Journal
Discordances 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 CARMENES search for exoplanets around M dwarfs: Nine new double-line spectroscopic binary stars

open access: bronze, 2018
Context. The CARMENES spectrograph is surveying ~300 M dwarf stars in search for exoplanets. Among the target stars, spectroscopic binary systems have been discovered, which can be used to measure fundamental properties of stars. Aims.
D. Baroch   +29 more
openalex   +4 more sources

A STUDY OF SPECTROSCOPIC BINARY STARS [PDF]

open access: bronzePublications of the Astronomical Society of the Pacific, 1910
W. W. Campbell
openalex   +3 more sources

NEW SPECTROSCOPIC BINARY STARS. [PDF]

open access: bronzePublications of the Astronomical Society of the Pacific, 1903
H. M. Reese
openalex   +3 more sources

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