{ "id": "1203.3763", "version": "v1", "published": "2012-03-16T16:50:27.000Z", "updated": "2012-03-16T16:50:27.000Z", "title": "The structure of molecular gas associated with NGC2264: wide-field 12CO and H2 imaging", "authors": [ "J. V. Buckle", "J. S. Richer", "C. J. Davis" ], "comment": "MNRAS accepted", "categories": [ "astro-ph.GA" ], "abstract": "We present wide-field, high-resolution imaging observations in 12CO 3-2 and H2 1-0 S(1) towards a ~1 square degree region of NGC2264. We identify 46 H2 emission objects, of which 35 are new discoveries. We characterize several cores as protostellar, reducing the previously observed ratio of prestellar/protostellar cores in the NGC2264 clusters. The length of H2 jets increases the previously reported spatial extent of the clusters. In each cluster, <0.5% of cloud material has been perturbed by outflow activity. A principal component analysis of the 12CO data suggests that turbulence is driven on scales >2.6 pc, which is larger than the extent of the outflows. We obtain an exponent alpha=0.74 for the size-linewidth relation, possibly due to the high surface density of NGC2264. In this very active, mixed-mass star forming region, our observations suggest that protostellar outflow activity is not injecting energy and momentum on a large enough scale to be the dominant source of turbulence.", "revisions": [ { "version": "v1", "updated": "2012-03-16T16:50:27.000Z" } ], "analyses": { "keywords": [ "molecular gas", "wide-field 12co", "h2 imaging", "protostellar outflow activity", "h2 emission objects" ], "tags": [ "journal article" ], "publication": { "doi": "10.1111/j.1365-2966.2012.20941.x", "journal": "Monthly Notices of the Royal Astronomical Society", "year": 2012, "month": "Jun", "volume": 423, "number": 2, "pages": 1127 }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "inspire": 1094102, "adsabs": "2012MNRAS.423.1127B" } } }