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

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...

Full description

Saved in:
Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 1998-06, Vol.297 (2), p.565-569
Main Authors: Dufton, P. L., Keenan, F. P., Kilkenny, D., O'Donoghue, D., Parker, Q. A., van Wyk, F., van Leeuwen, F.
Format: Article
Language:English
Subjects:
stars: AGB and post-AGB
stars: early-type
stars: individual: PHL 346
stars: variables: other
ultraviolet: stars
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0035-8711
1365-2966
DOI:10.1046/j.1365-8711.1998.01543.x