A Preliminary Observational Search for Circumbinary Disks Around Cataclysmic Variables

Circumbinary (CB) disks have been proposed as a mechanism to extract orbital angular momentum from cataclysmic variables (CVs) during their evolution. As proposed by Taam & Spruit, these disks extend outwards to several a.u. and should be detected observationally via their infrared flux or by ab...

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Published in:arXiv.org 2004-03
Main Authors: Belle, K E, Sanghi, N, Howell, S B, Holberg, J B, Williams, P T
Format: Article
Language:English
Subjects:
Accretion disks
Angular momentum
Binary stars
Cataclysmic variables
Infrared imaging
Line spectra
Near infrared radiation
Ultraviolet spectra
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Sanghi, N
Howell, S B
Holberg, J B
Williams, P T
description Circumbinary (CB) disks have been proposed as a mechanism to extract orbital angular momentum from cataclysmic variables (CVs) during their evolution. As proposed by Taam & Spruit, these disks extend outwards to several a.u. and should be detected observationally via their infrared flux or by absorption lines in the ultraviolet spectra of the CV. We have made use of archival HST/STIS spectra as well as our own near-IR imaging to search for observational evidence of such CB disks in seven CVs. Based on the null result, we place an upper limit on the column density of the disk of N_H~10^17 cm^-2.
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subjects Accretion disks
Angular momentum
Binary stars
Cataclysmic variables
Infrared imaging
Line spectra
Near infrared radiation
Ultraviolet spectra
title A Preliminary Observational Search for Circumbinary Disks Around Cataclysmic Variables
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