389 datasets found

Keywords: spectroscopic binary stars

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  • Radial velocities in the globular NGC 2808

    The formation mechanism of hot horizontal branch (HB) stars is still one of the most uncertain points of stellar evolution theories. In the past decade, models based on their...
  • Search for brown-dwarf companions of stars

    The discovery of 9 new brown-dwarf candidates is reported. New CORALIE radial velocities of 6 previously-known hosts of potential brown-dwarf companions are presented. We use...
  • Radial velocities of 9 O-type stars

    We present the results obtained from a long-term spectroscopic campaign to study the multiplicity of O-type stars in both the young open cluster NGC 2244 and the Mon OB2...
  • Radial velocities of SB with M giant

    This paper is a follow-up of the vast effort to collect radial velocity data for stars belonging to the Hipparcos survey. We aim at extending the orbital data available for...
  • Spectral analysis of 636 SDSS WD-M binaries

    We present a catalog of 857 WD-M star binaries from the Sloan Digital Sky Survey (SDSS), most of which were previously identified by other authors, and the results of our...
  • Radial velocities of 3 RasTyc new triple system

    During the study of a large set of late-type stellar X-ray sources, we discovered a high fraction of multiple systems. In this paper we investigate the orbital elements and...
  • White dwarf-red dwarf binaries in the SDSS

    To reduce contamination by more distant sources, such as quasars, we have selected candidate white dwarf-red dwarf binaries from the catalogue of proper motion stars drawn from...
  • Procyon (alpha CMi) radial velocities

    The data represent report a 9-night asteroseismic observation program conducted in January 2007 with the new spectrometer SOPHIE at the OHP 193-cm telescope, on the F5 IV-V...
  • UV Flux distributions of gamma Dor stars

    It seems that the recently identified class of pulsating stars, the gamma Dor type-variables, includes objects with different metal abundances and a large percentage of...
  • Radial velocities of HD 209625

    The goal is to test the structure of hot metallic stars, and in particular the structure of a near-surface convection zone using asteroseismic measurements. Indeed, stellar...
  • Radial velocity in multiple systems

    We want to improve the knowledge of orbits, physical parameters and statistics of nearby multiple systems. Radial velocities were measured with a correlation spectrometer during...
  • UBV photometry of HD 143418

    After a serendipitious discovery that HD 143418 is a light variable, we analyzed numerous UBV observations and Hipparcos H_p_ magnitudes transformed to Johnson V to find out...
  • Radial velocities of DW Car

    We have studied the high-mass short-period detached eclipsing binary DW Carinae using high-resolution echelle spectroscopy and photoelectric Stroemgren uvby light curves. We...
  • Radial velocities of beta Cep

    We present the radial-velocity data of both components of the double-lined spectroscopic binary Beta Centauri, whose lines are blended throughout the orbit. The radial-velocity...
  • V360 Lac spectroscopy

    We include existing photometric and spectroscopic material with new observations in a detailed study of the Be+F binary V360 Lac. We used the programs FOTEL and KOREL to derive...
  • Radial velocities of 6 binaries

    Radial velocity measurements of the two components of three new discovered SB2 systems, HD183957, BD+15 4538, and BD+33 4462, have been obtained from optical spectra acquired...
  • Companions to close spectroscopic binaries

    We have surveyed a sample of 165 solar-type spectroscopic binaries (SB) with periods from 1 to 30 days for higher-order multiplicity. 62 targets have been observed with the NACO...
  • Journal of all RVs of eps Per primary

    A detailed analysis of a large collection of electronic spectra from three observatories, together with radial velocities published earlier, were used to derive a new ephemeris...
  • Spectroscopy of HD 45166

    The binary star HD 45166 has been observed since 1922 but its orbital period has not yet been found. It is considered a peculiar Wolf-Rayet star, and its assigned classification...
  • Candidate spectroscopic binaries in SDSS

    We have examined the radial velocity data for stars spectroscopically observed by the Sloan Digital Sky Survey (SDSS) more than once to investigate the incidence of...
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