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Title: Remnant planetary systems around bright white dwarfs
Authors: Barber, S. D.
Belardi, Claudia
Kilic, M.
Gianninas, A.
First Published: 28-Mar-2016
Publisher: Oxford University Press (OUP), Royal Astronomical Society
Citation: Monthly Notices of the Royal Astronomical Society (June 21, 2016) 459 (2): 1415-1421.
Abstract: We cross-correlate several sources of archival photometry for 1265 bright (V ∼ 16 mag) white dwarfs (WDs) with available high signal-to-noise spectroscopy. We find 381 WDs with archival Spitzer+IRAC data and investigate this subsample for infrared excesses due to circumstellar dust. This large data set reveals 15 dusty WDs, including three new debris discs and the hottest WD known to host dust (WD 0010+280). We study the frequency of debris discs at WDs as function of mass. The frequency peaks at 12.5 per cent for 0.7–0.75 M⊙ WDs (with 3 M⊙ main-sequence star progenitors) and falls off for stars more massive than this, which mirrors predicted planet occurrence rates for stars of different masses.
DOI Link: 10.1093/mnras/stw683
ISSN: 0035-8711
eISSN: 1365-2966
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Creative Commons “Attribution Non-Commercial No Derivatives” licence CC BY-NC-ND, further details of which can be found via the following link:
Description: Additional Supporting Information may be found in the online version of this article: Table 3. IRAC Ch 1 and Ch 2 photometry. ( mnras/stw683/-/DC1).
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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