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Preprint 11g/04

Detection of pulsations in the newly discovered PG1159 star HE1429-1209

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

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

To be published in: 14th European Workshop on White Dwarfs, eds. D. Koester, S. Moehler, ASP Conf. Ser.

Abstract. We present time-series photometry of HE 1429-1209, a PG 1159 star, which was recently identified in the ESO SPY survey. It is located within the planetary nebula nuclei instability strip, so it was expected to show pulsations. We analysed lightcurves, taken with the Tübingen 0.8m telescope during three nights in May 2004, and discovered a significant pulsation period of about 919 seconds.
 

Preprint (193 kb PDF file including figures)

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