A detailed dynamical investigation of the proposed QS Virginis planetary system

Horner, J. and Wittenmyer, R. A. and Hinse, T. C. and Marshall, J. P. and Mustill, A. J. and Tinney, C. G. (2013) A detailed dynamical investigation of the proposed QS Virginis planetary system. Monthly Notices of the Royal Astronomical Society, 435 (3). pp. 2033-2039. ISSN 0035-8711

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Abstract

In recent years, a number of planetary systems have been proposed to orbit-evolved binary star systems. The presence of planets is invoked to explain observed variations in the timing of mutual eclipses between the primary and secondary components of the binary star system. The planets recently proposed orbiting the cataclysmic variable system QS Virginis are the latest in this ongoing series of 'extreme planets'. The two planets proposed to orbit QS Virginis would move on mutually crossing orbits - a situation that is almost invariably unstable on very short time-scales. In this work, we present the results of a detailed dynamical study of the orbital evolution of the two proposed planets, revealing that they are dynamically unstable on time-scales of less than one thousand years across the entire range of orbital elements that provide a plausible fit to the observational data, and regardless of their mutual orbital inclination. We conclude that the proposed planets around the cataclysmic variable QS Virginis simply cannot exist.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 The Authors.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - No Department
Date Deposited: 25 Jun 2014 23:58
Last Modified: 23 Mar 2017 00:25
Uncontrolled Keywords: binaries; eclipsing; individual; planetary systems; planets and satellites; QS Vir; stars; white dwarfs
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
02 Physical Sciences > 0201 Astronomical and Space Sciences > 020108 Planetary Science (excl. Extraterrestrial Geology)
01 Mathematical Sciences > 0102 Applied Mathematics > 010204 Dynamical Systems in Applications
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: 10.1093/mnras/stt1420
URI: http://eprints.usq.edu.au/id/eprint/25361

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