SIMBAD references

2005ApJ...634L.185B - Astrophys. J., 634, L185-L188 (2005/December-1)

Caught in the act: the onset of massive star formation.

BEUTHER H., SRIDHARAN T.K. and SAITO M.

Abstract (from CDS):

Combining mid-infrared data from the Spitzer Space Telescope with cold gas and dust emission observations from the Plateau de Bure Interferometer, we characterize the infrared dark cloud IRDC 18223-3 at high spatial resolution. The millimeter continuum data reveal a massive ∼184 Mgas core with a projected size of ∼28,000 AU that has no associated protostellar mid-infrared counterpart. However, the detection of 4.5 µm emission at the edge of the core indicates early outflow activity, which is supported by broad CO and CS spectral line-wing emission. Moreover, systematically increasing N2H+(1-0) line width toward the millimeter core center can be interpreted as additional evidence for early star formation. Furthermore, the N2H+(1-0) line emission reveals a less massive secondary core that could be in an evolutionary stage prior to any star formation activity.:

Abstract Copyright:

Journal keyword(s): Stars: Early-Type - Stars: Formation - stars: individual (IRDC 18223-3) - Stars: Winds, Outflows

Simbad objects: 5

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2019.10.19-15:41:47

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