Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-07-03
Astronomy and Astrophysics
Astrophysics
59 pages, 14 figures, accepted for publication in ApJ
Scientific paper
10.1086/591729
The present work aims at performing a comprehensive census and characterisation of the pre-main sequence (PMS) population in the cometary cloud L1615/L1616, in order to assess the significance of the triggered star formation scenario and investigate the impact of massive stars on its star formation history and mass spectrum. Our study is based on UBVRcIc and JHKs photometry, as well as optical multi-object spectroscopy. We performed a physical parametrisation of the young stellar population in L1615/L1616. We identified 25 new T Tauri stars mainly projected on the dense head of the cometary cloud, almost doubling the current number of known members. We studied the spatial distribution of the cloud members as a function of the age and H$\alpha$ emission. The star formation efficiency in the cloud is about 7-8 %, as expected for molecular clouds in the vicinity of OB associations. The slope of the initial mass function (IMF), in the mass range 0.1
Alcal{á} Juan M.
Covino Elvira
Frasca Antonio
Gandolfi Davide
Kainulainen Jouni
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