Multiple Outflows and Protostars in Barnard 1. II. Deep Optical and Near-Infrared Images
Abstract
We have used deep optical (Hα and [S II]) and near-IR (H2 and KS ) images and catalogs of protostars based on optical and infrared data to follow up our previous observations and examine the protostellar outflow population in the Barnard 1 (B1) dark cloud. The deep images presented here link shocks at the low extinction periphery of the cloud to an outflow system that bisects the confused core of B1. In addition, we find that a deeply embedded infrared shock, previously identified as a protostar, is likely the impact of a flow on a submillimeter clump. In all, we detail nine outflow systems in this cloud, eight of which have clearly identified source protostars.
Based in part on data collected at the Subaru Telescope which is operated by the National Astronomical Observatory of Japan.- Publication:
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The Astronomical Journal
- Pub Date:
- February 2009
- DOI:
- 10.1088/0004-6256/137/2/3254
- Bibcode:
- 2009AJ....137.3254W
- Keywords:
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- ISM: Herbig-Haro objects;
- ISM: individual: Barnard 1;
- ISM: jets and outflows;
- stars: formation