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A near-IR spectrum of the DO white dwarf RE J0503-285


Dobbie, PD and Burleigh, MR and Levan, AJ and Barstow, MA and Napiwotzki, R and Hubeny, I, A near-IR spectrum of the DO white dwarf RE J0503-285, Astronomy and Astrophysics: A European Journal, 439, (3) pp. 1159 - 1163. ISSN 0004-6361 (2005) [Refereed Article]

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Copyright Statement

Copyright 2005 ESO.

DOI: doi:10.1051/0004-6361:20053215


We present a near-IR spectroscopic analysis of the intriguing DO white dwarf RE J0503-285. The IR spectrum fails to reveal evidence of the presence of a spatially unresolved, cool, late-type companion. Hence we have placed an approximate limit on the spectral-type and mass of a putative companion (later than M8, M < 0.085~M⊙). This result rules out ongoing interaction between the white dwarf and a close companion with M ≥ 0.085 M⊙ as responsible for the discrepancies between the observed photospheric abundances and model predictions. As the possibility remains that there is a cooler companion lying beyond the detection threshold of this study we use our modelling to estimate the improvement in sensitivity offered by a Spitzer observation.

Item Details

Item Type:Refereed Article
Keywords:stars: white dwarfs -- stars: atmospheres -- stars: binaries: spectroscopic -- stars: individual: RE J0503-285
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Stellar astronomy and planetary systems
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Dobbie, PD (Dr Paul Dobbie)
ID Code:81104
Year Published:2005
Web of Science® Times Cited:8
Deposited By:Mathematics and Physics
Deposited On:2012-11-22
Last Modified:2013-06-26

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