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Title: Radial velocities of southern visual multiple stars

High-resolution spectra of visual multiple stars were taken in 2008–2009 to detect or confirm spectroscopic subsystems and to determine their orbits. Radial velocities of 93 late-type stars belonging to visual multiple systems were measured by numerical cross-correlation. We provide the individual velocities, the width, and the amplitude of the Gaussians that approximate the correlations. The new information on the multiple systems resulting from these data is discussed. We discovered double-lined binaries in HD 41742B, HD 56593C, and HD 122613AB, confirmed several other known subsystems, and constrained the existence of subsystems in some visual binaries where both components turned out to have similar velocities. The orbits of double-lined subsystems with periods of 148 and 13 days are computed for HD 104471 Aa,Ab and HD 210349 Aa,Ab, respectively. We estimate individual magnitudes and masses of the components in these triple systems and update the outer orbit of HD 104471 AB.
Authors:
 [1] ;  [2] ;  [3]
  1. Cerro Tololo Inter-American Observatory, Casilla 603, La Serena (Chile)
  2. Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica (Slovakia)
  3. Department of Astronomy, Yale University, New Haven, CT 06511 (United States)
Publication Date:
OSTI Identifier:
22342177
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (New York, N.Y. Online); Journal Volume: 149; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AMPLITUDES; APPROXIMATIONS; BINARY STARS; CORRELATIONS; MASS; ORBITS; RADIAL VELOCITY; RESOLUTION; SPECTRA; STARS