K-band spectroscopy of deeply embedded, young OB stars

Details K-band spectroscopy of deeply embedded, young OB stars K-band spectroscopy of deeply embedded, young OB stars

2006-08-31

arxiv.org/abs/astro-ph/0608704v1

Astronomy and Astrophysics

Astrophysics

2 pages, 1 figure - Conference proceedings to 'Mass Loss from stars and the evolution of stellar clusters' - Lunteren, The Net

Scientific paper

We have obtained high resolution (R = 10,000) K-band spectra of candidate young massive stars deeply embedded in high-mass star-forming regions. These objects were selected from a near-infrared survey of 44 regions of high-mass star-formation (Kaper et al, 2006). In these clusters, 38 OB stars are identified whose K-band spectra are dominated by photospheric emission. In almost all those stars, the K-band spectra are indistinguishable from field stars. However, in some stars the profile of the Bracket gamma line is different (less deep, or absent) from those of the O field stars. One of the explanations of these profiles might be an enhanced mass-loss.

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