The VLT-FLAMES Tarantula Survey. XV. VFTS 822: A candidate Herbig B[e] star at low metallicity
| Autor: | Hugues Sana, V. M. Kalari, D. J. Lennon, Chris Evans, Jorick S. Vink, J. S. Clark, A. de Koter, P. R. Dunstall, L. E. Ellerbroek, Philip Dufton, William D. Taylor |
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| Přispěvatelé: | Low Energy Astrophysics (API, FNWI) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Physics
B(e) star Infrared Metallicity FOS: Physical sciences supergiants Astronomy and Astrophysics Astrophysics Photometry (optics) Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Magellanic Clouds pre-main sequence [stars] Hertzsprung-Russell and C-M diagrams emission-line Be [stars] Spectroscopy Large Magellanic Cloud Solar and Stellar Astrophysics (astro-ph.SR) |
| Zdroj: | Astronomy & Astrophysics, 564. EDP Sciences |
| ISSN: | 0004-6361 1432-0746 |
| Popis: | 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 $\pm$ 0.25 $L_{\odot}$) 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 measure mass accretion rates at low metallicity spectroscopically, to understand the effect of metallicity on accretion rates. Comment: 5 pages, 4 Figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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