The frequency and infrared brightness of circumstellar discs at white dwarfs

The frequency and infrared brightness of circumstellar discs at white dwarfs

White dwarfs whose atmospheres are polluted by terrestrial-like planetary debris have become a powerful and unique tool to study evolved planetary systems. This paper presents results for an unbiased Spitzer Infrared Array Camera search for circumstellar dust orbiting a homogeneous and well-defined...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2015-05, Vol.449 (1), p.574-587
Main Authors: Rocchetto, M, Farihi, J, Gänsicke, B. T, Bergfors, C
Format: Article
Language:eng
Subjects:
Accretion disks
Age
Astronomy
Brightness
Discs
Disks
Dust
Infrared
Infrared radiation
Luminosity
Orbits
Space telescopes
Stellar atmospheres
White dwarf stars
White dwarfs
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Summary:White dwarfs whose atmospheres are polluted by terrestrial-like planetary debris have become a powerful and unique tool to study evolved planetary systems. This paper presents results for an unbiased Spitzer Infrared Array Camera search for circumstellar dust orbiting a homogeneous and well-defined sample of 134 single white dwarfs. The stars were selected without regard to atmospheric metal content but were chosen to have (1) hydrogen-rich atmospheres, (2) 17 000 
ISSN:0035-8711
1365-2966