High-Resolution Observations of Molecular Lines toward the Hot Core G28.20-0.04N

Abstract

We present the results from arcsecond resolution observations of various line transitions at 1.3 mm toward hypercompact HII region G28.20-0.04N. With the SMA data, we have detected and mapped the transitions in the CH${}_3$CN, CO, ${}^{13}$CO, SO${}_2$, OCS, and CH${}_3$OH molecular lines as well as the radio recombination line H30$\alpha$. The observations and analysis indicate a hot core associated with G28.20-0.04N. The outflow and possible rotation are detected in this region.

arXiv comment12 pages, 4 figures, accepted for publication in ApJL

References in corpus (5)

• The Early Evolution of Massive Stars: Radio Recombination Line Spectra
• High-velocity gas toward hot molecular cores: evidence for collimated outflows from embedded sources
• Infall and Outflow of Molecular Gas in Sgr B2
• Internal Dynamics of the Hypercompact H II Region G28.20-0.04N
• An Infalling Torus of Molecular Gas Around the Ultra-Compact HII Region G28.20-0.05

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• Discovery of an extremely wide-angle bipolar outflow in AFGL 5142
• ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- VIII. A search for hot cores by using C${}_2$H${}_5$CN, CH${}_3$OCHO and CH${}_3$OH lines
• Infall and outflow motions in the high-mass star forming complex G9.62+0.19
• A VLA Study of Ultracompact and Hypercompact H II Regions from 0.7 to 3.6 cm
• Isolated Massive Star Formation in G28.20-0.05
• A Multiwavelength Study of the Sgr B Region: Contiguous Cloud-Cloud Collisions Triggering Widespread Star Formation Events?