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Very large array observations of candidate high-mass protostellar objects at 7 millimeters
(2007)
We present radio-continuum observations at 7 mm made using the Very Large Array toward three massive star-forming regions thought to be in very early stages of evolution, selected from the 2002 sample of Sridharan et al. ...
Chemical Diagnostics of the Massive Star Cluster-forming Cloud G33.92+0.11. II. HDCS and DCN
(Institute of Physics Publishing, 2018)
The central region of the massive star-forming cloud G33.92+0.11 was investigated with the emission from the
deuterated species HDCS and DCN observed at sub-arcsecond angular resolution (∼0 7) using ALMA. HDCS
shows a ...
Millimeter-wave Line Ratios and Sub-beam Volume Density Distributions
(IOP Publishing, 2017)
We explore the use of mm-wave emission line ratios to trace molecular gas density when observations integrate over a wide range of volume densities within a single telescope beam. For observations targeting external galaxies, ...
Carbon monoxide in the environs of the star WR 16
(EDP Sciences, 2013)
Aims. We analyze the carbon monoxide emission around the starWR 16 aiming to study the physical characteristics of the molecular
gas linked to the star and to achieve a better understanding of the interaction between ...
Study of the molecular and ionized gas in a possible precursor of an ultra-compact HII region
(EDP Sciences, 2017)
Aims. We aim to study the molecular and the ionized gas in a possible precursor of an ultra-compact H II region to contribute to the understanding of how high-mass stars build-up their masses once they have reached the ...
Two-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: 40 GHz Telescope Pointing, Beam Profile, Window Function, and Polarization Performance
(IOP, 2020)
The Cosmology Large Angular Scale Surveyor (CLASS) is a telescope array that observes the cosmic microwave background (CMB) over 75% of the sky from the Atacama Desert, Chile, at frequency bands centered near 40, 90, 150, ...
A submillimeter study of the IR dust bubble s 21 and its environs
(Universidad Nacional Autonoma de Mexico, 2017)
Based on the molecular emission in the 12CO(2-1) and 13CO(2-1) lines, and on the continuum emission in the MIR and FIR towards the S 21 IR dust bubble, we analyze the physical characteristics of the gas and dust linked to ...
A cluster in the making: ALMA reveals the initial conditions for high-mass cluster formation
(IOP PUBLISHING LTD, 2015)
G0.253+0.016 is a molecular clump that appears to be on the verge of forming a high-mass cluster: its extremely low dust temperature, high mass, and high density, combined with its lack of prevalent star formation, make ...
A cluster in the making: alma reveals the initial conditions for high-mass cluster formation.
(2015-04-01)
G0.253+0.016 is a molecular clump that appears to be on the verge of forming a high-mass cluster: its extremely
low dust temperature, high mass, and high density, combined with its lack of prevalent star formation, make ...