Resolving the compact HII regions in N160A with HST

Details Resolving the compact HII regions in N160A with HST Resolving the compact HII regions in N160A with HST

2001-10-29

arxiv.org/abs/astro-ph/0110622v1

Astronomy and Astrophysics

Astrophysics

11 pages, 5 figures. Accepted for publication in Astronomy & Astrophysics. A version of the paper with higher quality images i

Scientific paper

10.1051/0004-6361:20011577

Using high-resolution imaging with the Hubble Space Telescope, we study the Large Magellanic Cloud HII region N160A and uncover several striking features of this complex massive star-forming site. The two compact high excitation HII blobs (HEBs) A1 and A2 are for the first time resolved and their stellar content and morphology is revealed. A1, being of higher excitation, is powered by a single massive star whose strong wind has created a surrounding bubble. A2 harbors several exciting stars enshrouded inside large quantities of dust. The whole N160A nebula is energized by three star clusters for which we obtain photometry and study their color-magnitude diagram. The HII region is particularly dusty, with extinction values reaching an A_v~2.5 mag in the visible, and it is separated from the molecular cloud by an outstanding ionization front. A previously detected infrared young stellar object is also accurately located with respect to the HII region.

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