Radial velocities of SB with M giant Virtual Observatory Resource

Authors
  1. Famaey B.
  2. Pourbaix D.
  3. Frankowski A.
  4. Van Eck S.
  5. Mayor M.
  6. Udry S.,Jorissen A.
  7. Published by
    CDS
Abstract

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 binaries with M giant primaries. The data will be used in the companion papers of this series to (i) derive the binary frequency among M giants and compare it to that of K giants (Paper II, Frankowski et al., 2009A&A...498..479F), and (ii) analyse the eccentricity-period diagram and the mass-function distribution (Paper III, Jorissen et al., 2009A&A...498..489J). Keplerian solutions are fitted to radial-velocity data. However, for several stars, no satisfactory solution could be found, despite the fact that the radial-velocity standard deviation is larger than the instrumental error, because M giants suffer from intrinsic radial-velocity variations due to pulsations. We show that these intrinsic radial-velocity variations can be linked with both the average spectral-line width and the photometric variability. We present an extensive collection of spectroscopic orbits for M giants, with 12 new orbits, plus 17 from the literature. Moreover, to illustrate the fact that the large radial-velocity jitter present in Mira and semi-regular variables may easily be confused with orbital variations, we also present examples of pseudo-orbital variations (in S UMa, X Cnc and possibly in HD 115521, a former IAU radial-velocity standard). Because of this difficulty, M giants involving Mira variables were excluded from our monitored sample. We finally show that the majority of M giants detected as X-ray sources are actually binaries.

Keywords
  1. spectroscopic-binary-stars
  2. radial-velocity
  3. late-type-stars
Bibliographic source Bibcode
2009A&A...498..627F
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/498/627
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/498/627
Document Object Identifer DOI
doi:10.26093/cds/vizier.34980627

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/498/627
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/498/627
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/498/627
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/498/627/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/498/627/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/498/627/table2?

History

2009-07-12T12:44:36Z
Resource record created
2009-07-12T12:44:36Z
Created
2017-06-27T06:38:10Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr