Hipparcos parallaxes of the nearest Cepheids - Implicative of binarity

Research output: Chapter in Book/Report/Conference proceedingChapter

4 Citations (Scopus)

Abstract

The period-luminosity relation of Cepheids is calibrated on the basis of the Hipparcos trigonometric parallax values, using data on Cepheids within one kiloparsec. It is shown that the milliarcsec-size apparent orbit of Cepheids belonging to binary systems has an unfavourable influence on the parallax determination. About two third of the sample studied here have physical companion(s). The true value of the parallax of such stars, as well as the projected orbit of the individual Cepheids have to be extracted from the original Hipparcos measurements. It is promising, however, that the P-L relation based on the trigonometric parallax of solitary Cepheids is in agreement with the recently determined other versions.

Original languageEnglish
Title of host publicationEuropean Space Agency, (Special Publication) ESA SP
Pages657-660
Number of pages4
Edition402
Publication statusPublished - 1997

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Orbits
Stars
Luminance

Keywords

  • Binary stars
  • Cepheid variables
  • Distance scale
  • Space astrometry

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Szabados, L. (1997). Hipparcos parallaxes of the nearest Cepheids - Implicative of binarity. In European Space Agency, (Special Publication) ESA SP (402 ed., pp. 657-660)

Hipparcos parallaxes of the nearest Cepheids - Implicative of binarity. / Szabados, L.

European Space Agency, (Special Publication) ESA SP. 402. ed. 1997. p. 657-660.

Research output: Chapter in Book/Report/Conference proceedingChapter

Szabados, L 1997, Hipparcos parallaxes of the nearest Cepheids - Implicative of binarity. in European Space Agency, (Special Publication) ESA SP. 402 edn, pp. 657-660.
Szabados L. Hipparcos parallaxes of the nearest Cepheids - Implicative of binarity. In European Space Agency, (Special Publication) ESA SP. 402 ed. 1997. p. 657-660
Szabados, L. / Hipparcos parallaxes of the nearest Cepheids - Implicative of binarity. European Space Agency, (Special Publication) ESA SP. 402. ed. 1997. pp. 657-660
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