Searching for initial stage of massive star formation around the H II region G18.2-0.3

Abstract

Sometimes the early star formation can be found in cold and dense molecular clouds, such as infrared dark cloud (IRDC). Considering star formation often occurs in clustered condition, HII regions may be triggering a new generation of star formation, so we can search for initial stage of massive star formation around HII regions. Based on that above, this work is to introduce one method of how to search for initial stage of massive star formation around HII regions. Towards one sample of the HII region G18.2-0.3, multiwavelength observations are carried out to investigate its physical condition. In contrast and analysis, we find three potential initial stages of massive star formation, suggesting that it is feasible to search for initial stage of massive star formation around HII regions.

15 pages, 8 figures, 5 tables. Accepted by Research in Astron. Astrophys

References in corpus (18)

• Cold Dark Clouds: The Initial Conditions for Star Formation
• The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey
• MAMBO Mapping of Spitzer c2d Small Clouds and Cores
• Analytical theory for the initial mass function: CO clumps and prestellar cores
• The earliest phases of high-mass star formation: a 3 square degree millimeter continuum mapping of Cygnus X
• A Parallax-based Distance Estimator for Spiral Arm Sources
• Hi-GAL, the Herschel infrared Galactic Plane Survey: photometric maps and compact source catalogues. First data release for Inner Milky Way: +68°> l > -70°
• IR Dust Bubbles: Probing the Detailed Structure and Young Massive Stellar Populations of Galactic HII Regions
• Large-scale filaments associated with Milky Way spiral arms
• A 24 Micron Point Source Catalog of the Galactic Plane from Spitzer/MIPSGAL
• Triggered star formation on the borders of the Galactic HII region RCW 82
• Probing the initial conditions of High Mass Star formation -- I. Deuteration and depletion in high mass pre/protocluster clumps
• The Onset of Massive Star Formation: The Evolution of Temperature and Density Structure in an Infrared Dark Cloud
• G11.92-0.61-MM2: A Bonafide Massive Prestellar Core?
• Molecular clumps and star formation associated with the infrared dust bubble N131
• A multi-wavelength observation and investigation of six infrared dark clouds
• Expanding Shell and Star Formation in the Infrared Dust Bubble N6
• Multiwavelength study of the infrared dust bubble S51

Cited by in corpus (7)

• Star formation in the Sh 2-53 region influenced by accreting molecular filaments
• The TOP-SCOPE survey of PGCCs: PMO and SCUBA-2 observations of 64 PGCCs in the 2nd Galactic Quadrant
• Two-Dimensional Molecular Gas and ongoing star formation around H II region Sh2-104
• Probing the initial conditions of high-mass star formation. III. Fragmentation and triggered star formation
• Radio Recombination Line Observations at $1.0-1.5$ GHz with FAST
• A mean density of $112M_{\odot }\mathrm{p}{\mathrm{c}}^{-3}$ for Central Molecular Zone clumps -- Evidences for shear-enabled pressure equilibrium in the Galactic Center
• Gas dynamics in the star forming region G18.148$-$0.283: Is it a manifestation of two colliding molecular clouds?