Evolution of Close Binaries with a B-type Primary at Birth

Walter Van Rensbergen; Camiel De Loore; Jean De Greve; Kim Jansen

Evolution of Close Binaries with a B-type Primary at Birth

Walter Van Rensbergen, Camiel De Loore, Jean De Greve, Kim Jansen

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference paper

Abstract

Initial distributions of mass-ratios and orbital periods of binaries with a B-type primary are determined from the 9th Catalogue of Spectroscopic Binaries. We used the Brussels binary evolutionary code to compare the observed distributions of periods and mass ratios of Algols with the statistics obtained from conservative evolution. Conservative RLOF reproduces the observed distribution of periods but fails to explain the observed mass ratios in the range q in [0.4-1]. In order to obtain a better fit binaries have to lose a significant amount of matter, without losing much angular momentum. We present a scenario of this event through the combined action of spin-up and accreted radiation pressure during a short interval of rapid RLOF.

Original language	English
Title of host publication	The Seventh Pacific Rim Conference on Stellar Astrophysics, ASP Conference Series, Vol. 362, Proceedings of the conference held 1-5 November, 2005 in Sejong University, Seoul, Korea
Place of Publication	San Francisco, Calif.
Publisher	Astronomical Society of the Pacific
ISBN (Print)	1-58381-230-X
Publication status	Published - 2007
Event	Unknown - Duration: 1 Jan 2007 → …

Conference

Conference	Unknown
Period	1/01/07 → …

Keywords

Astrophysics

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Van Rensbergen, Walter ; De Loore, Camiel ; De Greve, Jean ; Jansen, Kim. / Evolution of Close Binaries with a B-type Primary at Birth. The Seventh Pacific Rim Conference on Stellar Astrophysics, ASP Conference Series, Vol. 362, Proceedings of the conference held 1-5 November, 2005 in Sejong University, Seoul, Korea. San Francisco, Calif. : Astronomical Society of the Pacific, 2007.

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title = "Evolution of Close Binaries with a B-type Primary at Birth",

abstract = "Initial distributions of mass-ratios and orbital periods of binaries with a B-type primary are determined from the 9th Catalogue of Spectroscopic Binaries. We used the Brussels binary evolutionary code to compare the observed distributions of periods and mass ratios of Algols with the statistics obtained from conservative evolution. Conservative RLOF reproduces the observed distribution of periods but fails to explain the observed mass ratios in the range q in [0.4-1]. In order to obtain a better fit binaries have to lose a significant amount of matter, without losing much angular momentum. We present a scenario of this event through the combined action of spin-up and accreted radiation pressure during a short interval of rapid RLOF.",

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author = "{Van Rensbergen}, Walter and {De Loore}, Camiel and {De Greve}, Jean and Kim Jansen",

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Van Rensbergen, W, De Loore, C, De Greve, J & Jansen, K 2007, Evolution of Close Binaries with a B-type Primary at Birth. in The Seventh Pacific Rim Conference on Stellar Astrophysics, ASP Conference Series, Vol. 362, Proceedings of the conference held 1-5 November, 2005 in Sejong University, Seoul, Korea. Astronomical Society of the Pacific, San Francisco, Calif., Unknown, 1/01/07.

Evolution of Close Binaries with a B-type Primary at Birth. / Van Rensbergen, Walter; De Loore, Camiel; De Greve, Jean; Jansen, Kim.

The Seventh Pacific Rim Conference on Stellar Astrophysics, ASP Conference Series, Vol. 362, Proceedings of the conference held 1-5 November, 2005 in Sejong University, Seoul, Korea. San Francisco, Calif. : Astronomical Society of the Pacific, 2007.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper

TY - GEN

T1 - Evolution of Close Binaries with a B-type Primary at Birth

AU - Van Rensbergen, Walter

AU - De Loore, Camiel

AU - De Greve, Jean

AU - Jansen, Kim

PY - 2007

Y1 - 2007

N2 - Initial distributions of mass-ratios and orbital periods of binaries with a B-type primary are determined from the 9th Catalogue of Spectroscopic Binaries. We used the Brussels binary evolutionary code to compare the observed distributions of periods and mass ratios of Algols with the statistics obtained from conservative evolution. Conservative RLOF reproduces the observed distribution of periods but fails to explain the observed mass ratios in the range q in [0.4-1]. In order to obtain a better fit binaries have to lose a significant amount of matter, without losing much angular momentum. We present a scenario of this event through the combined action of spin-up and accreted radiation pressure during a short interval of rapid RLOF.

AB - Initial distributions of mass-ratios and orbital periods of binaries with a B-type primary are determined from the 9th Catalogue of Spectroscopic Binaries. We used the Brussels binary evolutionary code to compare the observed distributions of periods and mass ratios of Algols with the statistics obtained from conservative evolution. Conservative RLOF reproduces the observed distribution of periods but fails to explain the observed mass ratios in the range q in [0.4-1]. In order to obtain a better fit binaries have to lose a significant amount of matter, without losing much angular momentum. We present a scenario of this event through the combined action of spin-up and accreted radiation pressure during a short interval of rapid RLOF.

KW - Astrophysics

M3 - Conference paper

SN - 1-58381-230-X

BT - The Seventh Pacific Rim Conference on Stellar Astrophysics, ASP Conference Series, Vol. 362, Proceedings of the conference held 1-5 November, 2005 in Sejong University, Seoul, Korea

PB - Astronomical Society of the Pacific

CY - San Francisco, Calif.

Y2 - 1 January 2007

ER -

Evolution of Close Binaries with a B-type Primary at Birth

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