Binarity and cluster membership of classical cepheids

L. Szabados, Z. T. Kiss, P. Klagyivik

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)


Companions exert adverse effects on the relationships valid for Cepheids. Physical companions may also cause observable effects (e.g., phase jump in the pulsation, slight excitation of non-radial modes). Many new binaries among Cepheids can be revealed by using radial velocity measurements to be made by Gaia and by deriving astrometric orbit from data to be obtained over the five years of the Gaia mission. Cluster membership of Cepheids also facilitates the calibration of the period-luminosity relationship independently of the pulsation. A brief summary on the membership of Cepheids in clusters is also given.

Original languageEnglish
Title of host publicationGAIA
Subtitle of host publicationAt the Frontiers of Astrometry
Number of pages4
Publication statusPublished - May 23 2011
EventSymposium - GAIA: At the Frontiers of Astrometry - Sevres, France
Duration: Jun 7 2010Jun 11 2010

Publication series

NameEAS Publications Series
ISSN (Print)1633-4760
ISSN (Electronic)1638-1963


OtherSymposium - GAIA: At the Frontiers of Astrometry

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Engineering(all)
  • Space and Planetary Science

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    Szabados, L., Kiss, Z. T., & Klagyivik, P. (2011). Binarity and cluster membership of classical cepheids. In GAIA: At the Frontiers of Astrometry (pp. 441-444). (EAS Publications Series; Vol. 45).