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

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]...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2014-04, Vol.564, p.L7
Hauptverfasser:	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., Taylor, W. D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Hertzsprung-Russell and C-M diagrams Magellanic Clouds stars: emission-line stars: pre-main sequence supergiants
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	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.
ISSN:	0004-6361 1432-0746
DOI:	10.1051/0004-6361/201323289