SIMBAD references

2010MNRAS.402...73B - Mon. Not. R. Astron. Soc., 402, 73-86 (2010/February-2)

Discovery of large-scale gravitational infall in a massive protostellar cluster.

BARNES P.J., YONEKURA Y., RYDER S.D., HOPKINS A.M., MIYAMOTO Y., FURUKAWA N. and FUKUI Y.

Abstract (from CDS):

We report Mopra Australia Telescope National Facility (ATNF), Anglo-Australian Telescope and Atacama Submillimeter Telescope Experiment observations of a molecular clump in Carina, BYF73 = G286.21+0.17, which give evidence of large-scale gravitational infall in the dense gas. From the millimetre and far-infrared data, the clump has a mass of ∼2x104M, luminosity of ∼2-3x104L and diameter of ∼0.9 pc. From radiative transfer modelling, we derive a mass infall rate of ∼3.4x10–2M/yr. If confirmed, this rate for gravitational infall in a molecular core or clump may be the highest yet seen. The near-infrared K-band imaging shows an adjacent compact Hii region and IR cluster surrounded by a shell-like photodissociation region showing H2emission. At the molecular infall peak, the K imaging also reveals a deeply embedded group of stars with associated H2emission. The combination of these features is very unusual, and we suggest that they indicate the ongoing formation of a massive star cluster. We discuss the implications of these data for competing theories of massive star formation.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): astrochemistry - stars: formation - ISM: kinematics and dynamics - ISM: molecules - infrared: ISM - radio lines: ISM

Status at CDS:  

Simbad objects: 13

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2020.04.07-02:46:38

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