Star formation conditions in a Planck Galactic Cold Clump, G108.84-00.81

Abstract

We present the results from a series of ground-based radio observations toward a Planck Galactic Cold Clump (PGCC), PGCC G108.84-00.81, which is located in one curved filamentary cloud in the vicinity of an extended HII region Sh2-152 and SNR G109.1-1.0. PGCC G108.84-00.81 is mainly composed of two clumps, "G108-N" and "G108-S". In the 850 micron dust continuum emission map, G108-N is shown as one component while G108-S is fragmented into four components. There is no infrared source associated with G108-N while there are two infrared sources (IRS 1 and IRS 2) associated with G108-S. The total mass of G108-N is larger than the jeans mass, suggesting that G108-N is gravitationally unstable and a potential place for a future star formation. The clump properties of G108-N and G108-S such as the gas temperature and the column density, are not distinctly different. However, G108-S is slightly more evolved than G108-N, in the consideration of the CO depletion factor, molecular abundances, and association with infrared sources. G108-S seems to be affected by the compression from Sh2-152, while G108-N is relatively protected from the external effect

arXiv commentAccepted for publication in ApJS. 46 pages, 14 Figures

References in corpus (30)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• A computer program for fast non-LTE analysis of interstellar line spectra
• The Spitzer c2d Legacy Results: Star Formation Rates and Efficiencies; Evolution and Lifetimes
• The AKARI/IRC Mid-Infrared All-Sky Survey
• Dense Cores in Dark Clouds. XIV. N2H+(1-0) maps of dense cloud cores
• Physical Conditions in Regions of Star Formation
• Analytical theory for the initial mass function: CO clumps and prestellar cores
• Systematic Molecular Differentiation in Starless Cores
• A Minimum Column Density of 1 g cm^-2 for Massive Star Formation
• SCUBA-2: iterative map-making with the Sub-Millimetre User Reduction Facility
• Ammonia in Infrared Dark Clouds
• ATLASGAL --- towards a complete sample of massive star forming clumps
• A Classification Scheme for Young Stellar Objects Using the WIDE-FIELD INFRARED SURVEY EXPLORER AllWISE Catalog: Revealing Low-Density Star Formation in the Outer Galaxy
• Characterizing Precursors to Stellar Clusters with Herschel
• The dangers of being trigger--happy
• Chemistry and Dynamics in Pre-Protostellar Cores
• Gas emissions in Planck cold dust clumps---A Survey of the J=1-0 Transitions of ${}^{12}$CO, ${}^{13}$CO, and C${}^{18}$O
• Quiescent Dense Gas in Protostellar Clusters: the Ophiuchus A Core
• Ionization--induced star formation IV: Triggering in bound clusters
• TMC-1C: an accreting starless core
• The statistics of triggered star formation: an overdensity of massive YSOs around Spitzer bubbles
• Gaseous CO Abundance---An Evolutionary Tracer for Molecular Clouds
• Interactions of the Infrared bubble N4 with the surroundings
• Astrochemical Properties of Planck Cold Clumps
• A feedback-driven bubble G24.136+00.436: a possible site of triggered star formation
• Molecular environments of 51 Planck cold clumps in Orion complex
• Triggered star formation surrounding Wolf-Rayet star HD 211853
• Planck cold clumps in the $\lambda$ Orionis complex: I. Discovery of an extremely young Class 0 protostellar object and a proto-brown dwarf candidate in a bright rimmed clump PGCC G192.32-11.88
• Maser and Infrared Studies of Oxygen-Rich Late/Post-AGB Stars and Water Fountains: Development of a New Identification Method
• Near-infrared study of the stellar population of Sh2-152

Cited by in corpus (9)

• A holistic perspective on the dynamics of G035.39-00.33: the interplay between gas and magnetic fields
• SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution - Survey Description and Compact Source Catalogue
• Planck Cold Clumps in the $\lambda$ Orionis complex. II. Environmental effects on core formation
• Herschel and SCUBA-2 observations of dust emission in a sample of Planck cold clumps
• The properties of Planck Galactic cold clumps in the L1495 dark cloud
• The Planck Cold Clump G108.37-01.06: A Site of Complex Interplay between H II Regions, Young Clusters and Filaments
• The TOP-SCOPE survey of PGCCs: PMO and SCUBA-2 observations of 64 PGCCs in the 2nd Galactic Quadrant
• Sequential Star Formation in the filamentary structures of Planck Galactic cold clump G181.84+0.31
• Molecular Clouds Associated with {H \small{II}} regions and Candidates within l = 106.65${}^{\circ }$ to 109.50${}^{\circ }$ and b = $-$1.85${}^{\circ }$ to 0.95${}^{\circ }$