Subdwarf B Binaries from the SPY Project

C. Karl; U. Heber; R. Napiwotzki

Subdwarf B Binaries from the SPY Project

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Abstract

In the course of our search for double degenerate binaries as potential progenitors of type Ia supernovae with the ESO VLT (ESO - SN Ia progenitor survey - SPY), several sdB binaries were discovered. We report on the analysis of six radial velocity variable sdB stars from the SPY project. Radial velocity curves have been measured. Effective temperatures, surface gravities and helium abundances are determined, as well as metal abundances. We highlight some strong abundance anomalies.

Original language	English
Title of host publication	In: Procs of the 14th European Workshop on White Dwarfs - ASP Conference Series 334
Publisher	Astronomical Society of the Pacific
Pages	369-374
ISBN (Print)	1-58381-197-4, 978-1-58381-268-6
Publication status	Published - 2005

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title = "Subdwarf B Binaries from the SPY Project",

abstract = "In the course of our search for double degenerate binaries as potential progenitors of type Ia supernovae with the ESO VLT (ESO - SN Ia progenitor survey - SPY), several sdB binaries were discovered. We report on the analysis of six radial velocity variable sdB stars from the SPY project. Radial velocity curves have been measured. Effective temperatures, surface gravities and helium abundances are determined, as well as metal abundances. We highlight some strong abundance anomalies.",

author = "C. Karl and U. Heber and R. Napiwotzki",

note = "Original paper can be found at: http://www.astrosociety.org/pubs/cs/328.html--Copyright Astronomical Society of the Pacific",

year = "2005",

language = "English",

isbn = "1-58381-197-4",

pages = "369--374",

booktitle = "In: Procs of the 14th European Workshop on White Dwarfs - ASP Conference Series 334",

publisher = "Astronomical Society of the Pacific",

address = "United States",

}

TY - GEN

T1 - Subdwarf B Binaries from the SPY Project

AU - Karl, C.

AU - Heber, U.

AU - Napiwotzki, R.

N1 - Original paper can be found at: http://www.astrosociety.org/pubs/cs/328.html--Copyright Astronomical Society of the Pacific

PY - 2005

Y1 - 2005

N2 - In the course of our search for double degenerate binaries as potential progenitors of type Ia supernovae with the ESO VLT (ESO - SN Ia progenitor survey - SPY), several sdB binaries were discovered. We report on the analysis of six radial velocity variable sdB stars from the SPY project. Radial velocity curves have been measured. Effective temperatures, surface gravities and helium abundances are determined, as well as metal abundances. We highlight some strong abundance anomalies.

AB - In the course of our search for double degenerate binaries as potential progenitors of type Ia supernovae with the ESO VLT (ESO - SN Ia progenitor survey - SPY), several sdB binaries were discovered. We report on the analysis of six radial velocity variable sdB stars from the SPY project. Radial velocity curves have been measured. Effective temperatures, surface gravities and helium abundances are determined, as well as metal abundances. We highlight some strong abundance anomalies.

M3 - Conference contribution

SN - 1-58381-197-4

SN - 978-1-58381-268-6

SP - 369

EP - 374

BT - In: Procs of the 14th European Workshop on White Dwarfs - ASP Conference Series 334

PB - Astronomical Society of the Pacific

ER -

Subdwarf B Binaries from the SPY Project

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