SIMBAD references

2018MNRAS.480..893Z - Mon. Not. R. Astron. Soc., 480, 893-904 (2018/October-2)

Northern Galactic molecular cloud clumps in Hi-GAL: dense gas map and environmental trends.


Abstract (from CDS):

In the quest to understand high-mass star formation, it is necessary to understand that from which the high-mass stars will form - dense molecular gas clouds and clumps. The Herschel Infrared Galactic Plane Survey (Hi-GAL) is a comprehensive survey of thermal dust emission that can be used to characterize the properties and Galactic distribution of molecular gas. We have analysed the survey maps within the Galactic longitude range 10° < l < 56° and have transformed these 2D maps into a 3D dense gas map of the Galactic plane using distance probability density functions. This range corresponds to the extent of the Galactic Ring Survey (GRS), which provided the majority of our line-of-sight velocities, and thus kinematic distances. In this section of Hi-GAL, we identify 19 886 clumps, out of which 10 124 have, at minimum, a kinematic distance, and 5405 have their distances well constrained through Bayesian techniques. Of those with well-constrained distances, clump masses tend to decrease with Galactocentric radius, whereas clump radii are independent of Galactocentric radius.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): ISM: clouds - dust, extinction - Galaxy: disc - Galaxy: structure - submillimetre: ISM

Simbad objects: 6

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