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Title: Irradiated brown dwarfs
Authors: Casewell, S. L.
Burleigh, M. R.
Lawrie, K. A.
Maxted, P. F. L.
Dobbie, P. D.
Napiwotzki, R.
First Published: 2013
Presented at: Brown dwarfs come of age Fuerteventura, Canary Islands, 2013
Start Date: 20-May-2013
End Date: 24-May-2013
Publisher: Fabrizio Serra editore for Società Astronomica Italiana
Citation: Journal of the Italian Astronomical Society / Memorie Della Società Astronomica Italiana (2013) Vol. 84, No. 4 1022
Abstract: We have observed the post common envelope binary WD0137-349 in the near infrared $J$, $H$ and $K$ bands and have determined that the photometry varies on the system period (116 min). The amplitude of the variability increases with increasing wavelength, indicating that the brown dwarf in the system is likely being irradiated by its 16500 K white dwarf companion. The effect of the (primarily) UV irradiation on the brown dwarf atmosphere is unknown, but it is possible that stratospheric hazes are formed. It is also possible that the brown dwarf (an L-T transition object) itself is variable due to patchy cloud cover. Both these scenarios are discussed, and suggestions for further study are made.
ISSN: 0037-8720
Version: Post-print
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: Archived with reference to SHERPA/RoMEO and publisher website.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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