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Binaries discovered by the SPY project. III. HE 2209-1444: A massive, short period double degenerate
(2003-11)
In the course of our search for double degenerate (DD) binaries as potential progenitors of type Ia supernovae with the UVES spectrograph at the ESO VLT (ESO SN Ia Progenitor surveY – SPY) we discovered HE2209−1444 to be ...
3D kinematics of white dwarfs from the SPY project
(2003-03)
We present kinematics of a sample of 107 DA white dwarfs from the SPY project (ESO SN Ia Progenitor surveY) and discuss kinematic criteria for a distinction of thin disk, thick disk, and halo populations. This is the first ...
NLTE Spectral Analysis of Iron Group Elements in the Hot Subluminous O-star BD+28 4211
(Astronomical Society of the Pacific, 2003)
An analysis of UV spectra of BD+28circ4211 obtained with the STIS spectrograph onboard the HST is presented. The spectral analysis is based on NLTE model calculation, which deal with the lineblanketing of iron group elements ...
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 ...