A Spitzer Search for Infrared Excesses around Massive Young White Dwarfs

Details A Spitzer Search for Infrared Excesses around Massive Young White Dwarfs A Spitzer Search for Infrared Excesses around Massive Young White Dwarfs

2005-11-03

arxiv.org/abs/astro-ph/0511094v1

Astron.J.131:1106-1118,2006

Astronomy and Astrophysics

Astrophysics

39 pages, 21 figures, 3 tables, 0 carbs. to appear in the Astronomical Journal (Feb 2006)

Scientific paper

10.1086/499207

We examine 14 hot white dwarfs for signs of infrared excess using the Spitzer Space Telescope. Twelve of the objects are massive white dwarfs which have been suggested to be the result of binary mergers. The remaining two objects are undermassive white dwarfs which again may be the result of mergers or the inspiral of a substellar companion. In no case do we find any evidence for significant infrared excesses out to wavelengths of 8 microns. This places strong constraints on the presence of orbiting dust and weaker constraints on the presence of close substellar companions.

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