FUGIN hot core survey. I. Survey method and initial results for
arXiv:2006.13191 · doi:10.1093/pasj/psab021
Abstract
We have developed a method to make a spectral-line-based survey of hot cores, which represent an important stage of high-mass star formation, and applied the method to the data of the FUGIN (FOREST Unbiased Galactic plane Imaging survey with the Nobeyama 45-m telescope) survey. First, we select hot core candidates by searching the FUGIN data for the weak hot core tracer lines (HNCO and CHCN) by stacking, and then we conduct follow-up pointed observations on these candidates in CS, SO, OCS, HCN, HNCO, CHCN, and CHOH and lines to confirm and characterize them. We applied this method to the portion of the FUGIN data and identified 22 "Hot Cores" (compact sources with more than two significant detection of the hot core tracer lines, i.e., SO, OCS, HCN, HNCO, CHCN, or CHOH lines) and 14 "Dense Clumps" (sources with more than two significant detection of CS, CHOH , or the hot core tracer lines). The identified Hot Cores are found associated with signposts of high-mass star formation such as ATLASGAL clumps, WISE HII regions, and Class II methanol masers. For those associated with ATLASGAL clumps, their bolometric luminosity to clump mass ratios are consistent with the star formation stages centered at the hot core phase. The catalog of FUGIN Hot Cores provides a useful starting point for further statistical studies and detailed observations of high-mass star forming regions.
arXiv comment23 pages, 8 figures, 4 tables, submitted to PASJ
References in corpus (27)
- A computer program for fast non-LTE analysis of interstellar line spectra
- Trigonometric Parallaxes of High Mass Star Forming Regions: the Structure and Kinematics of the Milky Way
- ATLASGAL - The APEX Telescope Large Area Survey of the Galaxy at 870 microns
- A Catalog of Extended Green Objects (EGOs) in the GLIMPSE Survey: A new sample of massive young stellar object outflow candidates
- The WISE Catalog of Galactic HII Regions
- ATLASGAL --- properties of a complete sample of Galactic clumps
- Testing grain-surface chemistry in massive hot-core regions
- Hi-GAL, the Herschel infrared Galactic Plane Survey: photometric maps and compact source catalogues. First data release for Inner Milky Way: +68°> l > -70°
- FOREST Unbiased Galactic plane Imaging survey with the Nobeyama 45-m telescope (FUGIN) I: Project Overview and Initial Results
- Properties of Hi-GAL clumps in the inner Galaxy]{The Hi-GAL compact source catalogue. I. The physical properties of the clumps in the inner Galaxy ()
- The Co-ordinated Radio and Infrared Survey for High Mass Star Formation (The CORNISH Survey) - I. Survey Design
- The Co-ordinated Radio and Infrared Survey for High-Mass Star Formation - II. Source Catalogue
- The 6-GHz methanol multibeam maser catalogue II: Galactic longitudes 6 to 20
- The Physical and Chemical Structure of Hot Molecular Cores
- Trigonometric Parallaxes of Massive Star Forming Regions: VIII. G12.89+0.49, G15.03-0.68 (M17) and G27.36-0.16
- Trigonometric parallaxes of star forming regions in the Sagittarius spiral arm
- On-The-Fly Observing System of the Nobeyama 45-m and ASTE 10-m Telescopes
- Trigonometric parallaxes to star-forming regions within 4 kpc of the galactic center
- A 95 GHz Class I Methanol Maser Survey Toward GLIMPSE Extended Green Objects (EGOs)
- ATLASGAL-selected massive clumps in the inner Galaxy: V. Temperature structure and evolution
- Trigonometric Parallaxes of Star Forming Regions in the Scutum Spiral Arm
- Spectrophotometric Distances to Galactic H\,{\sc{ii}} Regions
- Trigonometric Parallaxes of Massive Star Forming Regions: G012.88+0.48 and W33
- Distance to G14.33-0.64 in the Sagittarius Spiral Arm: H2O Maser Trigonometric Parallax with VERA
- Structure of the hot molecular core G10.47+0.03
- Revealing the environs of the remarkable southern hot core G327.3-0.6
- 12.2-GHz methanol maser MMB follow-up catalogue - III. Longitude range 10 to 20 degrees