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        Six New ZZ Ceti Stars from the SPY and the HQS Surveys

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        902258.pdf (PDF, 191Kb)
        Author
        Voss, B.
        Koester, D.
        Ostensen, R.
        Napiwotzki, R.
        Homeier, D.
        Reimers, D.
        Attention
        2299/2146
        Abstract
        We report on the discovery of six new ZZCeti stars. They were selected as candidates based on preparatory photometric observations of ob- jects from the Hamburg Quasar Survey (HQS), and based on the spectra of the Supernova Ia Progenitor Survey (SPY). Time-series photometry of 19 can- didate stars was carried out at the Nordic Optical Telescope (NOT) at Roque de Los Muchachos Observatory, Spain. The new variables are relatively bright, 15.4 < B < 16.6. Among them is WD 1150−153, which is the third ZZCeti star that shows photospheric CaII in its spectrum.
        Publication date
        2007
        Published in
        In: Procs of the 15th European Workshop on White Dwarfs - ASP Conf Series 372
        Other links
        http://hdl.handle.net/2299/2146
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