SIMBAD references

2012ApJ...758L..29G - Astrophys. J., 758, L29 (2012/October-3)

There are no starless massive proto-clusters in the first quadrant of the Galaxy.


Abstract (from CDS):

We search the λ = 1.1 mm Bolocam Galactic Plane Survey for clumps containing sufficient mass to form ∼104 M star clusters. Eighteen candidate massive proto-clusters are identified in the first Galactic quadrant outside of the central kiloparsec. This sample is complete to clumps with mass Mclump> 104 M and radius r ≲ 2.5 pc. The overall Galactic massive cluster formation rate is CFR(Mcluster> 104) ≲ 5 M/yr, which is in agreement with the rates inferred from Galactic open clusters and M31 massive clusters. We find that all massive proto-clusters in the first quadrant are actively forming massive stars and place an upper limit of τstarless< 0.5 Myr on the lifetime of the starless phase of massive cluster formation. If massive clusters go through a starless phase with all of their mass in a single clump, the lifetime of this phase is very short.

Abstract Copyright:

Journal keyword(s): galaxies: star clusters: general - ISM: clouds - open clusters and associations: general - stars: formation

Simbad objects: 29

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