Assessing molecular outflows and turbulence in the protostellar cluster Serpens South

Abstract

Molecular outflows driven by protostellar cluster members likely impact their surroundings and contribute to turbulence, affecting subsequent star formation. The very young Serpens South cluster consists of a particularly high density and fraction of protostars, yielding a relevant case study for protostellar outflows and their impact on the cluster environment. We combined CO $J=1-0$ observations of this region using the Combined Array for Research in Millimeter-wave Astronomy (CARMA) and the Institut de Radioastronomie Millimétrique (IRAM) 30 m single dish telescope. The combined map allows us to probe CO outflows within the central, most active region at size scales of 0.01 pc to 0.8 pc. We account for effects of line opacity and excitation temperature variations by incorporating ${}^{12}$CO and ${}^{13}$CO data for the $J=1-0$ and $J=3-2$ transitions (using Atacama Pathfinder Experiment and Caltech Submillimeter Observatory observations for the higher CO transitions), and we calculate mass, momentum, and energy of the molecular outflows in this region. The outflow mass loss rate, force, and luminosity, compared with diagnostics of turbulence and gravity, suggest that outflows drive a sufficient amount of energy to sustain turbulence, but not enough energy to substantially counter the gravitational potential energy and disrupt the clump. Further, we compare Serpens South with the slightly more evolved cluster NGC 1333, and we propose an empirical scenario for outflow-cluster interaction at different evolutionary stages.

arXiv comment26 pages, 15 figures, accepted for publication in the Astrophysical Journal

References in corpus (44)

• Astropy: A Community Python Package for Astronomy
• Embedded Clusters in Molecular Clouds
• 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
• The Energy Dissipation Rate of Supersonic, Magnetohydrodynamic Turbulence in Molecular Clouds
• Unveiling the Circumstellar Envelope and Disk: A Sub-Arcsecond Survey of Circumstellar Structures
• Outflow Feedback Regulated Massive Star Formation in Parsec-Scale Cluster Forming Clumps
• Filamentary Accretion Flows in the Embedded Serpens South Protocluster
• The Evolution of Outflow-Envelope Interactions in Low-Mass Protostars
• Protostellar Turbulence Driven by Collimated Outflows
• Cluster Formation in Protostellar Outflow-Driven Turbulence
• 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
• SMA Observations of Class 0 Protostars: A High-Angular Resolution Survey of Protostellar Binary Systems
• The COMPLETE Survey of Outflows in Perseus
• The formation of active protoclusters in the Aquila Rift: A millimeter continuum view
• The Spitzer Gould Belt Survey of Large Nearby Interstellar Clouds: Discovery of a Dense Embedded Cluster in the Serpens-Aquila Rift
• The Herschel first look at protostars in the Aquila Rift
• Molecular Outflows Driven by Low-Mass Protostars. I. Correcting for Underestimates When Measuring Outflow Masses and Dynamical Properties
• CARMA observations of protostellar outflows in NGC 1333
• Near-Infrared Imaging Polarimetry Toward Serpens South: Revealing the Importance of the Magnetic Field
• CARMA Large Area Star Formation Survey: Observational Analysis of Filaments in the Serpens South Molecular Cloud
• APEX-CHAMP+ high-J CO observations of low-mass young stellar objects: III. NGC 1333 IRAS 4A/4B envelope, outflow and UV heating
• Interstellar extinction in the direction of the Aquila Rift
• ALMA Observations of the HH 46/47 Molecular Outflow
• Submillimeter arcsecond-resolution mapping of the highly collimated protostellar jet HH 211
• APEX-CHAMP+ high-J CO observations of low-mass young stellar objects: I. The HH 46 envelope and outflow
• HH 212: SMA Observations of a Remarkable Protostellar Jet
• High-J CO survey of low-mass protostars observed with Herschel-HIFI
• Outflow Driven Turbulence in Molecular Clouds
• Abundant cyanopolyynes as a probe of infall in the Serpens South cluster-forming region
• Radiation-Hydrodynamic Simulations of Protostellar Outflows: Synthetic Observations and Data Comparisons
• Molecular Outflows From the Protocluster, Serpens South
• APEX-CHAMP+ high-J CO observations of low-mass young stellar objects: II. Distribution and origin of warm molecular gas
• An Observed Lack of Substructure in Starless Cores
• Multiple CO Outflows in Circinus: The Churning of a Molecular Cloud
• The Molecular Outflows in the rho Ophiuchi Main Cloud: Implications For Turbulence Generation
• Evidence for Large Grains in the Star-forming Filament OMC-2/3
• Confronting Outflow-Regulated Cluster Formation Model with Observations
• A Case Study of Low-Mass Star Formation
• A highly collimated, extremely high velocity outflow in Taurus
• Clustered Star Formation in Magnetic Clouds: Properties of Dense Cores Formed in Outflow-Driven Turbulence
• The molecular gas content of the Pipe Nebula I. Direct evidence of outflow-generated turbulence in B59?
• The Dynamical State of The Serpens South Filamentary Infrared Dark Cloud
• Molecular hydrogen jets and outflows in the Serpens south filamentary cloud

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• The Gould's Belt Distances Survey (GOBELINS) III. The distance to the Serpens/Aquila Molecular Complex
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• Distribution of Serpens South protostars revealed with ALMA
• The ALMA Survey of 70 $\mu \mathrm{m}$ Dark High-mass Clumps in Early Stages (ASHES). II: Molecular Outflows in the Extreme Early Stages of Protocluster Formation
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• A Unified Model for Bipolar Outflows from Young Stars: Kinematic Signatures of Jets, Winds, and Their Magnetic Interplay with the Ambient Toroids
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• A Novel Survey for Young Substellar Objects with the W-band filter II. The Coolest and Lowest Mass Members of the Serpens-South Star-forming Region
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• Wide-Field ${}^{12}$CO ($J=2-1$) and ${}^{13}$CO ($J=2-1$) Observations toward the Aquila Rift and Serpens Molecular Cloud Complexes. I. Molecular Clouds and Their Physical Properties
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• Planck Cold Clumps in the lambda Orionis Complex. III. A chemical probe of stellar feedback on cores in the lambda Orionis cloud
• Radio Properties of Young Stellar Objects in the Core of the Serpens South Infrared Dark Cloud
• The distance to the Serpens South Cluster from H2O masers
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• The CARMA-NRO Orion Survey: Statistical Signatures of Feedback in the Orion A Molecular Cloud
• Physical conditions for dust grain alignment in Class 0 protostellar cores II. The role of the radiation field in models aligning/disrupting dust grains
• Mid-$J$ CO Line Observations of Protostellar Outflows in the Orion Molecular Clouds
• Protonated hydrogen cyanide as a tracer of pristine molecular gas
• Discovery of 22 GHz Water Masers in the Serpens South Region
• Erosion of a dense molecular core by a strong outflow from a massive protostar
• CSO CO(2-1) and Spitzer IRAC Observations of a Bipolar Outflow in High-mass Star-forming Region IRAS 22506+5944
• The JCMT Transient Survey: Four Year Summary of Monitoring the Submillimeter Variability of Protostars
• Characterizing Outflows in the Cygnus X Region
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