SIMBAD references

2012MNRAS.423.1127B - Mon. Not. R. Astron. Soc., 423, 1127-1143 (2012/June-3)

The structure of molecular gas associated with NGC 2264: wide-field 12CO and H2imaging.


Abstract (from CDS):

We present wide-field, high-resolution imaging observations in 12CO 3 -> 2 and H21–0 S(1) towards a ∼ 1 deg2 region of NGC 2264. We identify 46 H2 emission objects, of which 35 are new discoveries. We characterize several cores as protostellar, reducing the previously observed ratio of pre-stellar/protostellar cores in the NGC 2264 clusters. The length of H2 jets increases the previously reported spatial extent of the clusters. In each cluster, <0.5 per cent 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 α= 0.74 for the size–linewidth relation, possibly due to the high surface density of NGC 2264. 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.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): stars: formation - ISM: jets and outflows - infrared: ISM - submillimetre: ISM

Nomenclature: Table A1: MHO NNNN (Nos 3100-3109) added.

Simbad objects: 47

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