The TOP-SCOPE survey of Planck Galactic Cold Clumps: Survey overview and results of an exemplar source, PGCC G26.53+0.17

Abstract

The low dust temperatures (<14 K) of Planck Galactic Cold Clumps (PGCCs) make them ideal targets to probe the initial conditions and very early phase of star formation. TOP-SCOPE is a joint survey program targeting ~2000 PGCCs in J=1-0 transitions of CO isotopologues and ~1000 PGCCs in 850 micron continuum emisison. The objective of the TOP-SCOPE survey and the joint surveys (SMT 10-m, KVN 21-m and NRO 45-m) is to statistically study the initial conditions occurring during star formation and the evolution of molecular clouds, across a wide range of environments. The observations, data analysis and example science cases for these surveys are introduced with an exemplar source, PGCC G26.53+0.17 (G26), which is a filamentary infrared dark cloud (IRDC). The total mass, the length and the mean line-mass (M/L) of the G26 filament are ~6200 Msun, ~12 pc and ~500 Msun/pc, respectively. Ten massive clumps including eight starless ones are found along the filament. The most massive Clump as a whole may be still in global collapse while its denser part seems to be undergoing expansion due to outflow feedback. The fragmentation in G26 filament from cloud scale to clump scale is in agreement with gravitational fragmentation of an isothermal, non-magnetized, and turbulent supported cylinder. A bimodal behavior in dust emissivity spectral index ($\beta$) distribution is found in G26, suggesting grain growth along the filament. The G26 filament may be formed due to large-scale compression flows evidenced by the temperature and velocity gradients across its natal cloud.

arXiv commentAccepted for publication in the ApJS

References in corpus (94)

• The Global Schmidt Law in Star Forming Galaxies
• A computer program for fast non-LTE analysis of interstellar line spectra
• From filamentary clouds to prestellar cores to the stellar IMF: Initial highlights from the Herschel Gould Belt survey
• Cold Dark Clouds: The Initial Conditions for Star Formation
• The Star Formation Rate and Dense Molecular Gas in Galaxies
• Clouds, filaments and protostars: the Herschel Hi-GAL Milky Way
• On the Star Formation Rates in Molecular Clouds
• Herschel view of the Taurus B211/3 filament and striations: Evidence of filamentary growth?
• SCUBA-2: The 10000 pixel bolometer camera on the James Clerk Maxwell Telescope
• The Critical Density and the Effective Excitation Density of Commonly Observed Molecular Dense Gas Tracers
• The mass function of dense molecular cores and the origin of the IMF
• On the Star Formation Efficiency of Turbulent Magnetized Clouds
• Global collapse of molecular clouds as a formation mechanism for the most massive stars
• Connecting Dense Gas Tracers of Star Formation in our Galaxy to High-z Star Formation
• Cluster-formation in the Rosette molecular cloud at the junctions of filaments
• The initial conditions of stellar protocluster formation. I. A catalogue of Spitzer dark clouds
• Filamentary Accretion Flows in the Embedded Serpens South Protocluster
• SCUBA-2: iterative map-making with the Sub-Millimetre User Reduction Facility
• One-Point Probability Distribution Functions of Supersonic Turbulent Flows in Self-Gravitating Media
• The Aquila prestellar core population revealed by Herschel
• SCUBA-2: on-sky calibration using submillimetre standard sources
• ATLASGAL - Compact source catalogue: 330 < l < 21 degrees
• Dust coagulation and fragmentation in molecular clouds. I. How collisions between dust aggregates alter the dust size distribution
• On the Density Distribution in Star-forming Interstellar Clouds
• Hierarchical fragmentation and differential star formation in the Galactic "Snake": infrared dark cloud G11.11-0.12
• The Formation and Destruction of Molecular Clouds and Galactic Star Formation
• How Many Infrared Dark Clouds can form Massive Stars and Clusters?
• The Properties of Massive, Dense, Clumps: Mapping Surveys of HCN and CS
• The Large and Small Scale Structures of Dust in the Star-Forming Perseus Molecular Cloud
• Chemistry in Infrared Dark Cloud Clumps: a Molecular Line Survey at 3 mm
• The "Nessie" Nebula: Cluster Formation in a Filamentary Infrared Dark Cloud
• On the universality of interstellar filaments: theory meets simulations and observations
• Planck Early Results: The Galactic Cold Core Population revealed by the first all-sky survey
• Evolution of Chemistry and Molecular Line Profile during Protostellar Collapse
• An Extinction Threshold for Protostellar Cores in Ophiuchus
• Infall, Outflow, Rotation, and Turbulent Motions of Dense Gas within NGC 1333 IRAS 4
• Fragmentation of Molecular Clumps and Formation of Protocluster
• A census of dense cores in the Aquila cloud complex: SPIRE/PACS observations from the Herschel Gould Belt survey
• The James Clerk Maxwell Telescope Legacy Survey of Nearby Star-forming Regions in the Gould Belt
• The Degree of CO Depletion in Pre-stellar Cores
• Galactic cold cores III. General cloud properties
• Helical Fields and Filamentary Molecular Clouds II - Axisymmetric Stability and Fragmentation
• Physical properties of interstellar filaments
• Large-scale filaments associated with Milky Way spiral arms
• Hierarchical Fragmentation and Jet-like Outflows in IRDC G28.34+0.06, a Growing Massive Protostar Cluster
• Parsec-scale SiO Emission in an Infrared Dark Cloud
• FellWalker - a Clump Identification Algorithm
• The Pipe Nebula as seen with Herschel: Formation of filamentary structures by large-scale compression ?
• The Herschel and JCMT Gould Belt Surveys: Constraining Dust Properties in the Perseus B1 Clump with PACS, SPIRE, and SCUBA-2
• ATLASGAL-selected massive clumps in the inner Galaxy: I. CO depletion and isotopic ratios
• Planck Early Results: The submillimetre properties of a sample of Galactic cold clumps
• ATLASGAL -- A Galaxy-wide sample of dense filamentary structures
• Dense Gas Tracers and Star Formation Laws in Active Galaxies: APEX Survey of HCN J=4-3, HCO+ J=4-3, and CS J=7-6
• Planck 2015 results. XXVIII. The Planck Catalogue of Galactic Cold Clumps
• Resolving the fragmentation of high line-mass filaments with ALMA: the integral shaped filament in Orion A
• Detection of two power-law tails in the probability distribution functions of massive GMCs
• Distinct Chemical Regions in the "Prestellar" Infrared Dark Cloud (IRDC) G028.23-00.19
• ALMA resolves the spiraling accretion flow in the luminous OB cluster forming region G33.92+0.11
• Gas emissions in Planck cold dust clumps---A Survey of the J=1-0 Transitions of ${}^{12}$CO, ${}^{13}$CO, and C${}^{18}$O
• High-mass Star Formation through Filamentary Collapse and Clump-fed Accretion in G22
• The ATLASGAL survey: distribution of cold dust in the Galactic plane. Combination with Planck data
• Galactic cold cores VI. Dust opacity spectral index
• A Census of Large-Scale ($\ge$ 10 pc), Velocity-Coherent, Dense Filaments in the Northern Galactic Plane: Automated Identification Using Minimum Spanning Tree
• Galactic cold cores V. Dust opacity
• The Formation of Stellar Clusters in Magnetized, Filamentary Infrared Dark Clouds
• The JCMT Plane Survey: early results from the l = 30 degree field
• ALMA reveals sequential high-mass star formation in the G9.62+0.19 complex
• The JCMT Gould Belt Survey: A Quantitative Comparison Between SCUBA-2 Data Reduction Methods
• The JCMT Plane Survey: First complete data release - emission maps and compact source catalogue
• Fragmentation in filamentary molecular clouds
• Cloud Structure of Galactic OB Cluster Forming Regions from Combining Ground and Space Based Bolometric Observations
• Star formation laws in both Galactic massive clumps and external galaxies: An extensive study with dust continuum, HCN (4-3), and CS (7-6)
• Linking Dense Gas from the Milky Way to External Galaxies
• Gaseous CO Abundance---An Evolutionary Tracer for Molecular Clouds
• N2H+ depletion in the massive protostellar cluster AFGL 5142
• The JCMT Gould Belt Survey: Evidence for Dust Grain Evolution in Perseus Star-forming Clumps
• Can we trace very cold dust from its emission alone ?
• Interactions of the Infrared bubble N4 with the surroundings
• Cloud structure of three Galactic infrared dark star-forming regions from combining ground and space based bolometric observations
• Astrochemical Properties of Planck Cold Clumps
• Discovery of an extremely wide-angle bipolar outflow in AFGL 5142
• 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
• Are Infrared Dark Clouds Really Quiescent?
• 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
• Herschel and SCUBA-2 observations of dust emission in a sample of Planck cold clumps
• Dense gas in molecular cores associated with Planck Galactic cold clumps
• Competitive accretion in the protocluster G10.6-0.4?
• Criteria for gravitational instability and quasi-isolated gravitational collapse in turbulent medium
• Galactic Cold Cores. VIII. Filament formation and evolution: Filament properties in context with evolutionary models
• Galactic Cold Cores VII: Filament Formation and Evolution - Methods & Observational Constraints
• L1599B: Cloud Envelope and C+ Emission in a Region of Moderately Enhanced Radiation Field
• Observational studies of pre-stellar cores and infrared dark clouds

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• Multi-scale analysis of the Monoceros OB 1 star-forming region: II. Colliding filaments in the Monoceros OB1 molecular cloud
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• The properties of Planck Galactic cold clumps in the L1495 dark cloud
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• Molecular Cloud Cores with High Deuterium Fraction: Nobeyama Single-Pointing Survey
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• C2H N=1-0 and N2H+ J=1-0 observations of Planck Galactic cold clumps
• Initial phases of high-mass star formation: A multiwavelength study towards the extended green object G12.42+0.50
• 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
• ALMA ACA and Nobeyama observations of two Orion cores in deuterated molecular lines
• Planck Cold Clumps in the lambda Orionis Complex. III. A chemical probe of stellar feedback on cores in the lambda Orionis cloud
• Pilot HI Survey of Planck Galactic Cold Clumps with FAST
• Molecular Cloud Cores with High Deuterium Fractions: Nobeyama Mapping Survey
• ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): How do dense core properties affect the multiplicity of protostars?
• G133.50+9.01: A likely cloud-cloud collision complex triggering the formation of filaments, cores and a stellar cluster
• Three dimensional projection effects on chemistry in a Planck galactic cold clump
• Characterization of dense Planck clumps observed with Herschel and SCUBA-2
• Nobeyama Survey of Inward Motions toward Cores in Orion Identified by SCUBA-2
• GGCHEMPY: A pure Python-based gas-grain chemical code for efficient simulation of interstellar chemistry
• Synthetic observations of dust emission and polarisation of Galactic cold clumps
• Planck Galactic Cold Clumps in Two Regions: the First Quadrant and the Anti-Center Direction Region
• Chemical properties of two dense cores in a Planck Galactic Cold Clump G168.72-15.48
• Sequential Star Formation in the filamentary structures of Planck Galactic cold clump G181.84+0.31
• Submillimeter continuum variability in Planck Galactic cold clumps
• On the Scarcity of Dense Cores ($n>10^5$ cm${}^{-3}$) in High Latitude Planck Galactic Cold Clumps
• Polarization fraction of Planck Galactic cold clumps and forecasts for the Simons Observatory
• On the photo-evaporation, dust polarization, and kinematics of two nebulae in Sh2-236
• Ultraviolet HST Spectroscopy of Planck Cold Clumps
• Submillimetre Transient Science in the Next Decade: EAO Submillimetre Futures White Paper Series, 2019
• Cloud G074.11+00.11: a stellar cluster in formation
• First Data Release of the ESO-ARO Public Survey SAMPLING --- SMT "All-sky" Mapping of PLanck Interstellar Nebulae in the Galaxy
• CO Structures with Narrow Lines in Nearby Quiescent Regions
• An S-shaped filament formed due to Cloud-Cloud Collision in molecular cloud G178.28-00.61
• Magnetic field of a ring-like shape molecular cloud