Volume 489, Number 2, October II 2008
|Page(s)||567 - 569|
|Published online||08 August 2008|
Recombination line profiles of embedded clusters
Department of Physics and Astronomy, Tel Aviv University, Ramat Aviv, Israel e-mail: email@example.com
Accepted: 1 August 2008
We are trying to probe conditions in the youngest super star clusters, those still embedded in dense obscuring clouds. The hydrogen recombination lines in the radio and infrared can be observed through the obscuration, as the optical and UV lines cannot, and give us the kinematics of the ionized gas. The line profiles of the clusters resemble superpositions of the lines of many very young ultra-compact or hyper-compact HII regions. This can be explained if each OB star is individually embedded in dense material which it is accreting, even as it ionizes. We speculate on what this implies for conditions in the clusters.
Key words: galaxies: star clusters / infrared: general / line: profiles
© ESO, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.