The VLT-FLAMES Tarantula Survey XV. VFTS 822: A candidate Herbig B[e] star at low metallicity

Kalari, V. M.; Vink, J. S.; Dufton, P. L.; Evans, C. J.; Dunstall, P. R.; Sana, H.; Clark, J. S.; Ellerbroek, L.; de Koter, A.; Lennon, D. J. and Taylor, W. D. (2014). The VLT-FLAMES Tarantula Survey XV. VFTS 822: A candidate Herbig B[e] star at low metallicity. Astronomy & Astrophysics, 564, article no. L7.

DOI: https://doi.org/10.1051/0004-6361/201323289

Abstract

We report the discovery of the B[e] star VFTS 822 in the 30 Doradus star-forming region of the Large Magellanic Cloud, classified by optical spectroscopy from the VLT-FLAMES Tarantula Survey and complementary infrared photometry. VFTS 822 is a relatively low-luminosity (log L = 4.04 ± 0.25 L_⊙) B8[e] star. In this Letter, we evaluate the evolutionary status of VFTS 822 and discuss its candidacy as a Herbig B[e] star. If the object is indeed in the pre-main sequence phase, it would present an exciting opportunity to spectroscopically measure mass accretion rates at low metallicity, to probe the effect of metallicity on accretion rates.

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About

• Item ORO ID
• 53986
• Item Type
• Journal Item
• ISSN
• 1432-0746
• Keywords
• stars: emission-line, Be; stars: pre-main sequence; supergiants; Hertzsprung-Russell and C-M diagrams; Magellanic Clouds
• Academic Unit or School
• Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
  Faculty of Science, Technology, Engineering and Mathematics (STEM)
• Research Group
• Astronomy
• Copyright Holders
• © 2014 ESO
• Related URLs
• • http://oro.open.ac.uk/31849/(Publication)
  • http://oro.open.ac.uk/35958/(Publication)
  • http://oro.open.ac.uk/35961/(Publication)
  • http://oro.open.ac.uk/53981/(Publication)
  • http://oro.open.ac.uk/53979/(Publication)
  • http://oro.open.ac.uk/53983/(Publication)
• Depositing User
• J. Simon Clark