Star-forming content of the giant molecular filaments in the Milky Way

Abstract

Observations have discovered numerous giant molecular filaments (GMFs) in the Milky Way. However, their role in the Galactic star formation and Galaxy-scale evolution of dense gas is still unknown. We investigate systematically the star-forming content of all currently known GMFs. This allows us to estimate the star formation rates (SFRs) of the GMFs and to establish relationships between the SFRs and the GMF properties. We identify and classify the young stellar object (YSO) population of each GMF using multi-wavelength photometry from near- to far-infrared. We estimate the total SFRs assuming a universal and fully sampled initial mass function and luminosity function. We uniformly estimate the physical properties of 57 GMFs. The GMFs show correlations between the 13CO line width, mass, and size, similar to Larson's relations. We identify 36 394 infrared excess sources in 57 GMFs and obtain SFRs for 46 GMFs. The median SFR surface density (Sigma_SFR) and star formation efficiency (SFE) of GMFs are 0.62 Msun Myr-1 pc-2 and 1%, similar to the nearby star-forming clouds. The star formation rate per free-fall time of GMFs is between 0.002-0.05 with the median value of 0.02. We also find a strong correlation between SFR and dense gas mass that is defined as gas mass above a visual extinction of 7 mag, which suggests that the SFRs of the GMFs scale similarly with dense gas as those of nearby molecular clouds. We also find a strong correlation between the mean SFR per unit length and dense gas mass per unit length. The origin of this scaling remains unknown, calling for further studies that can link the structure of GMFs to their SF activity and explore the differences between GMFs and other molecular clouds

arXiv comment74 pages, 91 figures, 7 appendix, accepted for publication in A&A

References in corpus (155)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• On the variation of the Initial Mass Function
• The Global Schmidt Law in Star Forming Galaxies
• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• The Photodetector Array Camera and Spectrometer (PACS) on the Herschel Space Observatory
• The Herschel-SPIRE instrument and its in-flight performance
• The Star Formation Law in Nearby Galaxies on Sub-Kpc Scales
• The Spitzer c2d Legacy Results: Star Formation Rates and Efficiencies; Evolution and Lifetimes
• From filamentary clouds to prestellar cores to the stellar IMF: Initial highlights from the Herschel Gould Belt survey
• Trigonometric Parallaxes of High Mass Star Forming Regions: the Structure and Kinematics of the Milky Way
• GLIMPSE: I. A SIRTF Legacy Project to Map the Inner Galaxy
• Some Aspects of Measurement Error in Linear Regression of Astronomical Data
• VISTA Variables in the Via Lactea (VVV): The public ESO near-IR variability survey of the Milky Way
• The Star Formation Rate and Dense Molecular Gas in Galaxies
• Interpreting Spectral Energy Distributions from Young Stellar Objects. I. A grid of 200,000 YSO model SEDs
• Characterizing interstellar filaments with Herschel in IC5146
• The UKIRT Infrared Deep Sky Survey ZYJHK Photometric System: Passbands and Synthetic Colours
• On the Star Formation Rates in Molecular Clouds
• The Mass Dependence Between Protoplanetary Disks and their Stellar Hosts
• A Spitzer Survey of Young Stellar Clusters within One Kiloparsec of the Sun: Cluster Core Extraction and Basic Structural Analysis
• Modelling the Galactic Interstellar Extinction Distribution in Three Dimensions
• ATLASGAL - The APEX Telescope Large Area Survey of the Galaxy at 870 microns
• The persistent cosmic web and its filamentary structure I: Theory and implementation
• The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey
• Hi-GAL: the Herschel infrared Galactic Plane Survey
• Herschel view of the Taurus B211/3 filament and striations: Evidence of filamentary growth?
• The UKIDSS Galactic Plane Survey
• A Universal, Local Star Formation Law in Galactic Clouds, Nearby Galaxies, High-Redshift Disks, and Starbursts
• Filamentary structure of star-forming complexes
• The Star Formation Rate and Gas Surface Density Relation in the Milky Way: Implications for Extragalactic Studies
• The WFCAM Science Archive
• Probing the evolution of molecular cloud structure: From quiescence to birth
• Spitzer Observations of NGC 1333: A Study of Structure and Evolution in a Nearby Embedded Cluster
• The UKIRT Wide Field Camera ZYJHK Photometric System: Calibration from 2MASS
• Cores, filaments, and bundles: hierarchical core formation in the L1495/B213 Taurus region
• VVV DR1: The First Data Release of the Milky Way Bulge and Southern Plane from the Near-Infrared ESO Public Survey VISTA Variables in the Via Lactea
• Physical properties of molecular clouds for the entire Milky Way disk
• Connecting Dense Gas Tracers of Star Formation in our Galaxy to High-z Star Formation
• Bolocam Survey for 1.1 mm Dust Continuum Emission in the c2d Legacy Clouds. I. Perseus
• Helical Fields and Filamentary Molecular Clouds
• The initial conditions of stellar protocluster formation. I. A catalogue of Spitzer dark clouds
• Mapping the interstellar dust with near-infrared observations: An optimized multi-band technique
• Star Formation Rates in Molecular Clouds and the Nature of the Extragalactic Scaling Relations
• A study of high velocity molecular outflows with an up-to-date sample
• CO Isotopologues in the Perseus Molecular Cloud Complex: the X-Factor and Regional Variations
• Young Stellar Objects in the Gould Belt
• Identifying the Low Luminosity Population of Embedded Protostars in the c2d Observations of Clouds and Cores
• The Aquila prestellar core population revealed by Herschel
• The Red MSX Source Survey: the Massive Young Stellar Population of our Galaxy
• The relation between gas and dust in the Taurus Molecular Cloud
• Hi-GAL, the Herschel infrared Galactic Plane Survey: photometric maps and compact source catalogues. First data release for Inner Milky Way: +68°> l > -70°
• Filamentary structures and compact objects in the Aquila and Polaris clouds observed by Herschel
• Bolocam Survey for 1.1 mm Dust Continuum Emission in the c2d Legacy Clouds. II. Ophiuchus
• Kinematic Distances to Molecular Clouds identified in the Galactic Ring Survey
• Star Formation Relations in Nearby Molecular Clouds
• Filaments and ridges in Vela C revealed by Herschel: from low-mass to high-mass star-forming sites
• Intrinsically Red Sources observed by Spitzer in the Galactic Mid-Plane
• The "True" Column Density Distribution in Star-Forming Molecular Clouds
• The "Nessie" Nebula: Cluster Formation in a Filamentary Infrared Dark Cloud
• 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
• ON the Nature of the Local Spiral Arm of the Milky Way
• A census of dense cores in the Aquila cloud complex: SPIRE/PACS observations from the Herschel Gould Belt survey
• Mid-Infrared Extinction Mapping of Infrared Dark Clouds II. The Structure of Massive Starless Cores and Clumps
• VLBA determination of the distance to nearby star-forming regions IV. A preliminary distance to the proto-Herbig AeBe star EC95 in the Serpens Core
• Galactic cold cores III. General cloud properties
• High-dynamic-range extinction mapping of infrared dark clouds: Dependence of density variance with sonic Mach number in molecular clouds
• Physical properties of interstellar filaments
• Large-scale filaments associated with Milky Way spiral arms
• Giant Molecular Filaments in the Milky Way
• The Bones of the Milky Way
• Observational Evidence of Dynamic Star Formation Rate in Milky Way Giant Molecular Clouds
• Unfolding the Laws of Star Formation: The Density Distribution of Molecular Clouds
• The data reduction pipeline for the Hi-GAL survey
• The California Molecular Cloud
• NICEST, a near-infrared color excess method tailored for small-scale structures
• The Herschel first look at protostars in the Aquila Rift
• A 24 Micron Point Source Catalog of the Galactic Plane from Spitzer/MIPSGAL
• The seeds of star formation in the filamentary infrared-dark cloud G011.11-0.12
• Evolution of column density distributions within Orion~A
• Slingshot Mechanism in Orion: Kinematic Evidence For Ejection of Protostars by Filaments
• Young Stellar Objects in Lynds 1641: Disks, Accretion, and Star Formation History
• The first Hi-GAL observations of the outer Galaxy: a look to star formation in the third Galactic quadrant in the longitude range 216.5 < l < 225.5
• Testing the universality of the star formation efficiency in dense molecular gas
• Luminosity Functions of Spitzer Identified Protostars in Nine Nearby Molecular Clouds
• CARMA Large Area Star Formation Survey: Observational Analysis of Filaments in the Serpens South Molecular Cloud
• High-fidelity view of the structure and fragmentation of the high-mass, filamentary IRDC G11.11-0.12
• ATLASGAL -- A Galaxy-wide sample of dense filamentary structures
• Planck intermediate results. XXXIII. Signature of the magnetic field geometry of interstellar filaments in dust polarization maps
• The nature of the Class I population in Ophiuchus as revealed through gas and dust mapping
• Schmidt's Conjecture and Star Formation in Molecular Clouds
• Arm & Interarm Star Formation in Spiral Galaxies
• The Three-mm Ultimate Mopra Milky Way Survey. I. Survey Overview, Initial Data Releases, and First Results
• The Physical Properties of Large-Scale Galactic Filaments
• Spatial Distributions of Young Stars
• The Musca cloud: A 6 pc-long velocity-coherent, sonic filament
• Star Formation Relations in the Milky Way
• A Precise Determination of the Mid-Infrared Interstellar Extinction Law Based on the APOGEE Spectroscopic Survey
• The Skeleton of the Milky Way
• CO Abundance Variations in the Orion Molecular Cloud
• Interstellar extinction in the direction of the Aquila Rift
• Resolving the fragmentation of high line-mass filaments with ALMA: the integral shaped filament in Orion A
• Star formation in Galactic spiral arms and the inter-arm regions
• Optical Characterization of a New Young Stellar Population in the Serpens Molecular Cloud
• Gravitational fragmentation caught in the act: the filamentary Musca molecular cloud
• The Green Bank Telescope HII Region Discovery Survey: III. Kinematic Distances
• A Census of Large-Scale ($\ge$ 10 pc), Velocity-Coherent, Dense Filaments in the Northern Galactic Plane: Automated Identification Using Minimum Spanning Tree
• Star formation in the Taurus filament L1495: From Dense Cores to Stars
• Herschel's view of the large-scale structure in the Chamaeleon dark clouds
• The Nature of Transition Circumstellar Disks II. Southern Molecular Clouds
• The Spitzer survey of interstellar clouds in the Gould Belt. II. The Cepheus Flare observed with IRAC and MIPS
• The Complex Distribution of Recently Formed Stars. Bimodal Stellar Clustering in the Star-Forming Region NGC 346
• The rate and latency of star formation in dense, massive clumps in the Milky Way
• The Herschel view of the on-going star formation in the Vela-C molecular cloud
• CARMA Large Area Star Formation Survey: Structure and Kinematics of Dense Gas in Serpens Main
• Planck intermediate results. XXXII. The relative orientation between the magnetic field and structures traced by interstellar dust
• Giant molecular filaments in the Milky Way II: The fourth Galactic quadrant
• The Free-Fall time of finite Sheets and Filaments
• POISSON project - II - A multi-wavelength spectroscopic and photometric survey of young protostars in L 1641
• A 500 pc filamentary gas wisp in the disk of the Milky Way
• A guided map to the Spiral arms in the galactic disk of the Milky Way
• A test of arm-induced star formation in spiral galaxies from near-IR and H$\alpha$ imaging
• W40 region in the Gould Belt : An embedded cluster and H II region at the junction of filaments
• The Dependence of Protostellar Luminosity on Environment in the Cygnus-X Star-Forming Complex
• Recent star formation in the Lupus clouds as seen by Herschel
• The end of star formation in Chamaeleon I ? A LABOCA census of starless and protostellar cores
• A Wide-field Near- and Mid-Infrared Census of Young Stars in NGC 6334
• The evolution of Giant Molecular Filaments
• POISSON project - III - Investigating the evolution of the mass accretion rate
• Milky Way Demographics with the VVV Survey II. Color Transformations and Near-Infrared Photometry for 136 Million Stars in the Southern Galactic Disk
• CARMA Large Area Star Formation Survey: Project Overview with Analysis of Dense Gas Structure and Kinematics in Barnard 1
• An analysis of star formation with Herschel in the Hi-GAL Survey. I. The Science Demonstration Phase Fields
• Herschel far-infrared observations of the Carina Nebula complex II: The embedded young stellar and protostellar population
• HP2 survey: III The California Molecular Cloud--A Sleeping Giant Revisited
• The prevalence of star formation as a function of Galactocentric radius
• The Galactic Distribution of Asymptotic Giant Branch Stars
• Star formation in W3 - AFGL333: Young stellar content, properties and roles of external feedback
• A Spitzer View of Mon OB1 East/NGC 2264
• Structure and Fragmentation of a high line-mass filament: Nessie
• A 12CO, 13CO, and C18O Survey of Infrared Dark Clouds
• The Spitzer Survey of Interstellar Clouds in the Gould Belt. V. Ophiuchus North Observed with IRAC and MIPS
• Molecular clouds and star formation toward the Galactic plane within 216.25${}^{\mathrm{o}}\le$ l $\le$218.75${}^{\mathrm{o}}$ and $-$0.75${}^{\mathrm{o}}\le$ b $\le$1.25${}^{\mathrm{o}}$
• Star formation in the filament of S254-S258 OB complex: a cluster in the process of making
• Young Stellar Objects in the Massive Star Forming Region W49
• Estimating Extinction using Unsupervised Machine Learning
• On the equilibrium of rotating filaments
• CO~($J=1-0$) Observations of a Filamentary Molecular Cloud in the Galactic Region Centered at $l = 150\arcdeg, b = 3.5\arcdeg$
• Streaming Motions and Kinematic Distances to Molecular Clouds
• A network of filaments detected by Herschel in the Serpens Core: A laboratory to test simulations of low-mass star formation
• A deep near-infrared survey toward the Aquila molecular cloud - I. Molecular hydrogen outflows
• The relation between surface star formation rate density and spiral arms in NGC 5236 (M83)
• Star Formation Activity in the Long, Filamentary Infrared Dark Cloud G53.2
• Continuum Observations of M51 and M83 at 1.1 mm with AzTEC
• Do individual Spitzer young stellar object candidates enclose multiple UKIDSS sources?
• A rotating helical filament in the L1251 dark cloud
• Internal Structure of Stellar Clusters: Geometry of Star Formation

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• Global Hierarchical Collapse In Molecular Clouds. Towards a Comprehensive Scenario
• Does the magnetic field suppress fragmentation in massive dense cores?
• Probing fragmentation and velocity sub-structure in the massive NGC 6334 filament with ALMA
• The Single-Cloud Star Formation Relation
• CO excitation, molecular gas density and interstellar radiation field in local and high-redshift galaxies
• Cloud formation in the atomic and molecular phase: HI self absorption (HISA) towards a Giant Molecular Filament
• SEDIGISM-ATLASGAL: Dense Gas Fraction and Star Formation Efficiency Across the Galactic Disk
• The role of Galactic HII regions in the formation of filaments. High-resolution submilimeter imaging of RCW 120 with ArTéMiS
• Autonomous Gaussian decomposition of the Galactic Ring Survey. I. Global statistics and properties of the 13CO emission data
• Dense Gas in a Giant Molecular Filament
• Simultaneous evidence of edge collapse and hub-filament configurations: A rare case study of a Giant Molecular Filament G45.3+0.1
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• Synthetic Large-Scale Galactic Filaments -- on their Formation, Physical Properties, and Resemblance to Observations
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• The Magnetic Field in the Milky Way Filamentary Bone G47
• Two-component Magnetic Field along the Line of Sight to the Perseus Molecular Cloud: Contribution of the Foreground Taurus Molecular Cloud
• Large-scale Velocity-coherent Filaments in the SEDIGISM Survey: Association with Spiral Arms and Fraction of Dense Gas
• The SEDIGISM survey: Molecular cloud morphology. I. Classification and star formation
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• On the evolution of the observed Mass-to-Length relationship for star-forming filaments
• W51North: A protocluster emerging out of a thermally inhibited fragmenting cloud
• Deep PSF photometric catalog of the VVV survey data
• The discovery of the largest gas filament in our Galaxy, or a new spiral arm?
• Nobeyama 45 m Local Spur CO survey. I. Giant molecular filaments and cluster formation in the Vulpecula OB association
• A Cold and Diffuse Giant Molecular Filament in the Region of $l=41^{\circ }$, $b=-1^{\circ }$
• A Herschel study of G214.5-1.8: a young, cold and quiescent giant molecular filament on the shell of a HI superbubble
• Dust extinction map of the Galactic plane based on the VVV survey data
• The Cassiopeia Filament: A Blown Spur of the Local Arm
• The Role of Magnetic Fields in the Formation of the Filamentary Infrared Dark Cloud G11.11-0.12
• Hierarchical Structure of YSO Clusters in the W40 and Serpens South Region: Group Extraction and Comparison with Fractal Clusters
• SCOTCH Search for Clandestine Optically Thick Compact HII regions II
• 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${}^{\circ }$
• Multiwavelength and astrometric study of the DBS-89-90-91 embedded clusters region
• Cold atomic gas identified by HI self-absorption. Cold atomic clouds toward giant molecular filaments
• Sub-kpc scale gas density histogram of the Galactic molecular gas: a new statistical method to characterise galactic-scale gas structures
• Spatial offsets between interstellar bone-like filaments, radio masers, and cold diffuse CO gas, in the Scutum spiral arm
• Contour Analysis Tool: an interactive tool for background and morphology analysis