β Cephei type variability in the ultraviolet spectrum and radial velocity of PHL 346

P. L. Dufton*, F. P. Keenan, D. Kilkenny, D. O'Donoghue, Q. A. Parker, F. Van Wyk, F. Van Leeuwen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

International Ultraviolet Explorer low-resolution and optical moderate-resolution spectra are presented for the high galactic latitude β Cephei type star, PHL 346. Variability is identified in both the ultraviolet flux and the radial velocity with periods and phases consistent with those previously deduced from optical photometry. The similarity of both the flux and the radial velocity amplitude to those previously reported for the β Cephei variable, γ Pegasus, is striking and provides evidence for PHL 346 being a young core hydrogen burning star. A distance estimate for PHL 346 of approximately 7 kpc (corresponding to a z-distance of approximately 6 kpc) is obtained by scaling the distance of γ Pegasus obtained from Hipparcos observations.

Original languageEnglish
Pages (from-to)565-569
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society
Volume297
Issue number2
Publication statusPublished - 21 Jun 1998

Keywords

  • Stars: AGB and post-AGB
  • Stars: early-type
  • Stars: individual: PHL 346
  • Stars: variables: other
  • Ultraviolet: stars

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