Please use this identifier to cite or link to this item:
http://hdl.handle.net/2381/33266
Title: | Multiwaveband photometry of the irradiated brown dwarf WD0137-349B |
Authors: | Casewell, S. L. Lawrie, K. A. Maxted, P. F. L. Marley, M. S. Fortney, J. J. Rimmer, P. B. Littlefair, S. P. Wynn, Graham Burleigh, M. R. Helling, C. |
First Published: | 15-Jan-2015 |
Publisher: | Oxford University Press (OUP) |
Citation: | Monthly Notices of the Royal Astronomical Society, 2015, 447 (4), pp. 3218-3226 (9) |
Abstract: | WD0137−349 is a white dwarf–brown dwarf binary system in a 116 min orbit. We present radial velocity observations and multiwaveband photometry from V, R and I in the optical, to J, H and Ks in the near-IR and [3.6], [4.5], [5.8] and [8.0] μm in the mid-IR. The photometry and light curves show variability in all wavebands, with the amplitude peaking at [4.5] μm, where the system is also brightest. Fluxes and brightness temperatures were computed for the heated and unheated atmosphere of the brown dwarf (WD0137−349B) using synthetic spectra of the white dwarf using model atmosphere simulations. We show that the flux from the brown dwarf dayside is brighter than expected in the Ks and [4.5] μm bands when compared to models of irradiated brown dwarfs with full energy circulation and suggest this overluminosity may be attributed to H2 fluorescence or H+3 being generated in the atmosphere by the UV irradiation. |
DOI Link: | 10.1093/mnras/stu2721 |
ISSN: | 0035-8711 |
eISSN: | 1365-2966 |
Links: | http://mnras.oxfordjournals.org/content/447/4/3218 http://hdl.handle.net/2381/33266 |
Version: | Publisher Version |
Status: | Peer-reviewed |
Type: | Journal Article |
Rights: | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. Deposited with reference to the publisher’s archiving policy available on the SHERPA/RoMEO website. |
Appears in Collections: | Published Articles, Dept. of Physics and Astronomy |
Files in This Item:
File | Description | Size | Format | |
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MNRAS-2015-Casewell-3218-26.pdf | Published (publisher PDF) | 718.08 kB | Adobe PDF | View/Open |
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