Discovery of the spectroscopic binary nature of the classical Cepheids FN Aql and V1344 Aql

L. Szabados, B. Cseh, J. Kovács, B. Csák, A. Dózsa, Gy M. Szabó, A. E. Simon, T. Borkovits, L. L. Kiss, I. Jankovics, Gy Mezo

Research output: Contribution to journalArticle

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Abstract

We present the analysis of photometric and spectroscopic data of two classical Cepheids, FN Aquilae and V1344 Aquilae. Based on the joint treatment of the new and earlier radial velocity data, both Galactic Cepheids have been found to be a member in a spectroscopic binary system. To match the phases of the earlier radial velocity data correctly with the new ones, we also determined the temporal behaviour of the pulsation period of these Cepheids based on all available photometric data. The O - C graph covering about half century shows slight changes in the pulsation period due to stellar evolution for both Cepheids.

Original languageEnglish
Article numberstu1066
Pages (from-to)3155-3161
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Volume442
Issue number4
DOIs
Publication statusPublished - Aug 2014

Keywords

  • Binaries: spectroscopic
  • Stars: individual: FN Aquilae
  • Stars: individual: V1344 Aquilae
  • Stars: variables: Cepheids

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Szabados, L., Cseh, B., Kovács, J., Csák, B., Dózsa, A., Szabó, G. M., Simon, A. E., Borkovits, T., Kiss, L. L., Jankovics, I., & Mezo, G. (2014). Discovery of the spectroscopic binary nature of the classical Cepheids FN Aql and V1344 Aql. Monthly Notices of the Royal Astronomical Society, 442(4), 3155-3161. [stu1066]. https://doi.org/10.1093/mnras/stu1066