Institut für Astronomie und Astrophysik Abteilung Astronomie Sand 1, D-72076 Tübingen, Germany

Preprint 08/04

Detection of non-radial g-mode pulsations in the newly discovered PG1159 star HE 1429-1209

T. Nagel (1), K. Werner (1)

(1) Institut f. Astronomie und Astrophysik, Universität Tübingen, Sand 1, 72076 Tübingen, Germany

To be published in: A&A Letters

Abstract. We performed time-series photometry of the PG1159-type star HE 1429-1209, which was recently discovered in the ESO SPY survey. We show that the star is a low-amplitude (about 0.05 mag) non-radial g-mode pulsator with a period of 919s. HE 1429-1209 is among the hottest known post-AGB stars (T_eff=160000 K) and, together with the known pulsator RX J2117.1+3412, it defines empirically the blue edge of the GW Vir instability strip in the HRD at high luminosities.

Preprint (116 kb gzip'ed Postscript including figures)
astro-ph/0409243

[Home Page] [Preprints 2004] [Quick Reference] [Feedback]

Jürgen Barnstedt | Impressum Last modified 13 Sep 2004