Search
Now showing items 11-17 of 17
DAZ White Dwarfs in the SPY Sample
(Astronomical Society of the Pacific, 2005)
We search for faint Ca II lines in the spectra of about 800 apparently single white dwarfs observed at high resolution for the SPY (ESO Supernova Progenitor Survey) survey. Photospheric Ca is detected in 24 DAZ; in 25 ...
Close binary EHB stars from SPY
(2004-06)
Double Degenerate and Progenitors of Supernovae Type Ia
(Astronomical Society of the Pacific, 2004)
We report on systematic radial velocity surveys for white dwarf { white dwarf binaries (double degenerates { DDs) including SPY (ESO Supernovae Ia progenitor survey) recently carried out at the VLT. A large sample of DD ...
SPY - the ESO Supernovae type Ia Progenitor survey
(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 ...