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

P. D. Dobbie, M. R. Burleigh, A. J. Levan, M. A. Barstow, R. Napiwotzki, Ivan - Hubeny

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1159-1163
Number of pages5
JournalAstronomy and Astrophysics
Volume439
Issue number3
DOIs
StatePublished - Sep 2005

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spectroscopic analysis
coolers
thresholds
sensitivity
estimates
prediction
predictions
modeling
interactions
analysis
detection

Keywords

  • Stars: atmospheres
  • Stars: binaries: spectroscopic
  • Stars: individual: RE J0503-285
  • Stars: white dwarfs

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Dobbie, P. D., Burleigh, M. R., Levan, A. J., Barstow, M. A., Napiwotzki, R., & Hubeny, I. . (2005). A near-IR spectrum of the DO white dwarf RE J0503-285. Astronomy and Astrophysics, 439(3), 1159-1163. https://doi.org/10.1051/0004-6361:20053215

A near-IR spectrum of the DO white dwarf RE J0503-285. / Dobbie, P. D.; Burleigh, M. R.; Levan, A. J.; Barstow, M. A.; Napiwotzki, R.; Hubeny, Ivan -.

In: Astronomy and Astrophysics, Vol. 439, No. 3, 09.2005, p. 1159-1163.

Research output: Contribution to journalArticle

Dobbie, PD, Burleigh, MR, Levan, AJ, Barstow, MA, Napiwotzki, R & Hubeny, I 2005, 'A near-IR spectrum of the DO white dwarf RE J0503-285', Astronomy and Astrophysics, vol. 439, no. 3, pp. 1159-1163. https://doi.org/10.1051/0004-6361:20053215
Dobbie PD, Burleigh MR, Levan AJ, Barstow MA, Napiwotzki R, Hubeny I. A near-IR spectrum of the DO white dwarf RE J0503-285. Astronomy and Astrophysics. 2005 Sep;439(3):1159-1163. https://doi.org/10.1051/0004-6361:20053215
Dobbie, P. D. ; Burleigh, M. R. ; Levan, A. J. ; Barstow, M. A. ; Napiwotzki, R. ; Hubeny, Ivan -. / A near-IR spectrum of the DO white dwarf RE J0503-285. In: Astronomy and Astrophysics. 2005 ; Vol. 439, No. 3. pp. 1159-1163.
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