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Mass and eccentricity constraints on the planetary debris orbiting the white dwarf WD 1145+017

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Gurri, Pol, Veras, Dimitri and Gänsicke, B. T. (Boris T.) (2017) Mass and eccentricity constraints on the planetary debris orbiting the white dwarf WD 1145+017. Monthly Notices of the Royal Astronomical Society, 464 (1). pp. 321-328. doi:10.1093/mnras/stw2293 ISSN 0035-8711.

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Official URL: http://dx.doi.org/10.1093/mnras/stw2293

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Abstract

Being the first of its kind, the white dwarf WD 1145+017 exhibits a complex system of disintegrating debris which offers a unique opportunity to study its disruption process in real time. Even with plenty of transit observations there are no clear constraints on the masses or eccentricities of such debris. Using N-body simulations, we show that masses greater than ≃1020 kg (a tenth of the mass of Ceres) or orbits that are not nearly circular (eccentricity > 10−3) dramatically increase the chances of the system becoming unstable within 2 yr, which would contrast with the observational data over this timespan. We also provide a direct comparison between transit phase shifts detected in the observations and by our numerical simulations.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): White dwarf stars, Celestial mechanics, Asteroids, Protoplanetary disks
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Oxford University Press
ISSN: 0035-8711
Official Date: 1 January 2017
Dates:
DateEvent
1 January 2017Published
12 September 2016Available
10 September 2016Accepted
6 September 2016Submitted
Volume: 464
Number: 1
Page Range: pp. 321-328
DOI: 10.1093/mnras/stw2293
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 28 November 2016
Date of first compliant Open Access: 29 November 2016
Funder: Seventh Framework Programme (European Commission) (FP7)
Grant number: Grant Agreement no. 320964 (WDTracer)

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