Browsing by Author "Reimers, D."

Now showing items 21-25 of 25

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

      Voss, B.; Koester, D.; Ostensen, R.; Napiwotzki, R.; Homeier, D.; Reimers, D. (Astronomical Society of the Pacific, 2007)
      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 ...

    • Spectroscopic analysis of sdB stars from the ESO Supernova Ia Progenitor Survey 

      Lisker, T.; Heber, U.; Napiwotzki, R.; Christlieb, N.; Han, Z.; Homeier, D.; Reimers, D. (2004)

    • SPY - the ESO Supernovae type Ia Progenitor survey 

      Napiwotzki, R.; Christlieb, N.; Drechsel, H.; Hagen, H.J.; Heber, U.; Homeier, D.; Karl, C.; Koester, D.; Leibundgut, B.; Marsh, T.R.; Moehler, S.; Nelemans, G.; Pauli, E.M.; Reimers, D.; Renzini, A.; Yungelson, L. (2003)
      Supernovae (SNe) mark the violent termination of a star’s life in an explosion. They are classified according to their light curve as type I or II, with the type I SNe producing very similar light curves, while the SNe ...

    • Subdwarf B Stars from the ESO Supernova Ia Progenitor Survey -- Observation versus Theory 

      Lisker, T.; Heber, U.; Napiwotzki, R.; Christlieb, N.; Han, Z.; Homeier, D.; Reimers, D. (Astronomical Society of the Pacific, 2005)
      We present the analysis of a high-quality sample of optical spectra for 76 sdB stars from the ESO Supernova Ia Progenitor Survey. Effective temperature, surface gravity, and photospheric helium abundance were derived from ...

    • Two new ZZ Ceti pulsators from the HS and HE surveys 

      Silvotti, R.; Voss, B.; Bruni, I.; Koester, D.; Reimers, D.; Napiwotzki, R.; Homeier, D. (2005)