ATOMS:ALMA Three-millimeter Observations of Massive Star-forming regions -- III :Catalogues of candidate hot molecular cores and Hyper/Ultra compact HII regions

Abstract

We have identified 453 compact dense cores in 3 mm continuum emission maps in the ATOMS (ALMA Three-millimeter Observations of Massive Star-forming regions) survey, and compiled three catalogues of high-mass star forming cores. One catalogue, referred to as H/UC-HII catalogue, includes 89 cores that enshroud hyper/ultra compact (H/UC) HII regions as characterized by associated compact H40alpha emission. A second catalogue, referred to as pure s-cHMC, includes 32 candidate Hot Molecular Cores (HMCs) showing rich spectra (N>20lines) of complex organic molecules (COMs) but not associated with H/UC-HII regions. The third catalogue, referred to as pure w-cHMC, includes 58 candidate HMCs with relatively low levels of COM richness and not associated with H/UC-HII regions. These three catalogues of dense cores provide an important foundation for future studies of the early stages of high-mass star formation across the Milky Way. We also find that nearly half of H/UC-HII cores are candidate HMCs. From the number counts of COM-containing and H/UC-HII cores, we suggest that the duration of high-mass protostellar cores showing chemically rich features is at least comparable to the lifetime of H/UC-HII regions. For cores in the H/UC-HII catalogue, the width of the H40alpha line increases as the core size decreases, suggesting that the non-thermal dynamical and/or pressure line-broadening mechanisms dominate on the smaller scales of the H/UC-HII cores.

17 pages, five tables, and 11 figures. Accepted for publication at MNRAS

References in corpus (27)

• Trigonometric Parallaxes Of High-Mass Star Forming Regions: Our View Of The Milky Way
• Structural Analysis of Molecular Clouds: Dendrograms
• ATLASGAL --- properties of a complete sample of Galactic clumps
• A Minimum Column Density of 1 g cm^-2 for Massive Star Formation
• The origin of complex organic molecules in prestellar cores
• A Class I and Class II Methanol Maser Survey of Extended Green Objects (EGOs) from the GLIMPSE Survey
• ATLASGAL --- towards a complete sample of massive star forming clumps
• The Spatial Distribution of Complex Organic Molecules in the L1544 Pre-stellar Core
• 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 ($-71.0^{\circ }<\ell <67.0^{\circ }$)
• Fragmentation of Molecular Clumps and Formation of Protocluster
• ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- I. Survey description and a first look at G9.62+0.19
• The Early Evolution of Massive Stars: Radio Recombination Line Spectra
• Evolutionary study of complex organic molecules in high-mass star-forming regions
• Molecular Line Observations of Infrared Dark Clouds: Seeking the Precursors to Intermediate and Massive Star Formation
• Online Database of Class I Methanol Masers
• Physical and chemical conditions in methanol maser selected hot-cores and UCHII regions
• A population of hypercompact HII regions identified from young HII regions
• ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- II. Compact objects in ACA observations and star formation scaling relations
• Molecular analysis of a high-mass prestellar core candidate in W43-MM1
• SMA Observations of W3(OH) Complex: Physical and Chemical Differentiation between W3(H${}_2$O) and W3(OH)
• ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): I. Detection of New Hot Corinos with ACA
• Large-scale Map of Millimeter-wavelength Hydrogen Radio Recombination Lines around a Young Massive Star Cluster
• Recombination Lines and Molecular Gas from Hypercompact HII regions in W51 A
• SMA Observations of the Hot Molecular Core IRAS 18566+0408
• High-Resolution Observations of Molecular Lines toward the Hot Core G28.20-0.04N
• SPARKS II.: Complex organic molecules in accretion shocks around a hot core precursor
• Physics and chemistry of hot molecular cores

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• A global view on star formation: The GLOSTAR Galactic plane survey. IX. Radio Source Catalog III: 2<l<28, 36<l<40, 56<l<60 and |b|<1, VLA B-configuration
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• Inverted level populations of hydrogen atoms in ionized gas
• ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- VII. A catalogue of SiO clumps from ACA observations
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• ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- V. Hierarchical fragmentation and gas dynamics in IRDC G034.43+00.24