ar X iv : a st ro - p h / 03 08 01 8 v 1 1 A ug 2 00 3 Have the Elusive Progenitors of Supernovae Type Ia Been Discovered ?

ar X iv : a st ro - p h / 03 08 19 5 v 2 1 9 A ug 2 00 3 Classifications of the Host Galaxies of Supernovae , Set II

Classifications on the DDO system are given for an additional 231 host galaxies of supernovae that have been discovered during the course of the Lick Observatory Supernova Search with the Katzman Automatic Imaging Telescope (KAIT). This brings the total number of hosts of supernovae discovered (or independently rediscovered) by KAIT, which have so far been classified on a homogeneous system, to...

ar X iv : a st ro - p h / 05 08 18 0 v 1 8 A ug 2 00 5 Chemistry and Star Formation in the Host Galaxies of Type

We study the effect of environment on the properties of type Ia supernovae by analyzing the integrated spectra of 57 local type Ia supernova host galaxies. We deduce from the spectra the metallicity, current star formation rate, and star formation history of the host and compare these to the supernova decline rates. Additionally, we compare the host properties to the difference between the deri...

ar X iv : a st ro - p h / 03 09 00 6 v 1 3 0 A ug 2 00 3 High - resolution optical studies of nearby Type Ia supernovae

1 Stockholm Observatory, AlbaNova, Department of Astronomy, SE-106 91 Stockholm, Sweden [email protected] 2 Department of Physics and Astronomy, University of Oklahoma, Norman OK 73019-0225, USA 3 Leiden Observatory, P.O. Box 9513, 2300 RA Leiden, Netherlands 4 European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei München, Germany 5 Department of Astronomy and the Re...

ar X iv : a st ro - p h / 02 10 62 1 v 1 2 9 O ct 2 00 2 Search for double degenerate progenitors of

We report on a large survey 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). About 560 white dwarfs were checked for radial velocity variations until now. Ninety new DDs have been discovered, including short period systems with masses close to the Chandrasekhar mass. 1 The project Su...

ar X iv : a st ro - p h / 96 08 03 6 v 1 8 A ug 1 99 6 TABLE 1 Properties of LMC Double - Mode