Large-scale periodic velocity oscillation in the filamentary cloud G350.54+0.69
arXiv:1905.08292 · doi:10.1093/mnras/stz1340
Abstract
We use APEX mapping observations of 13CO, and C18O (2-1) to investigate the internal gas kinematics of the filamentary cloud G350.54+0.69, composed of the two distinct filaments G350.5-N and G350.5-S. G350.54+0.69 as a whole is supersonic and gravitationally bound. We find a large-scale periodic velocity oscillation along the entire G350.5-N filament with a wavelength of ~1.3 pc and an amplitude of ~0.12 km/s. Comparing with gravitational-instability induced core formation models, we conjecture that this periodic velocity oscillation could be driven by a combination of longitudinal gravitational instability and a large-scale periodic physical oscillation along the filament. The latter may be an example of an MHD transverse wave. This hypothesis can be tested with Zeeman and dust polarization measurements.
arXiv comment10 pages with 9 figures. Accepted for publication to MNRAS
References in corpus (42)
- The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
- From filamentary clouds to prestellar cores to the stellar IMF: Initial highlights from the Herschel Gould Belt survey
- Clouds, filaments and protostars: the Herschel Hi-GAL Milky Way
- MAMBO Mapping of Spitzer c2d Small Clouds and Cores
- Global collapse of molecular clouds as a formation mechanism for the most massive stars
- Global Hierarchical Collapse In Molecular Clouds. Towards a Comprehensive Scenario
- Helical Fields and Filamentary Molecular Clouds
- Filamentary Accretion Flows in the Embedded Serpens South Protocluster
- SDC13 infrared dark clouds: Longitudinally collapsing filaments?
- An ALMA study of the Orion Integral Filament: I. Evidence for narrow fibers in a massive cloud
- Dense core formation by fragmentation of velocity-coherent filaments in L1517
- Magnetically Regulated Star Formation in 3D: The Case of Taurus Molecular Cloud Complex
- Chains of dense cores in the Taurus L1495/B213 complex
- Helical Fields and Filamentary Molecular Clouds II - Axisymmetric Stability and Fragmentation
- The dynamical properties of dense filaments in the infrared dark cloud G035.39-00.33
- The Link between Magnetic Fields and Filamentary Clouds: Bimodal Cloud Orientations in the Gould Belt
- The Earliest Phases of Star Formation (EPoS): A Herschel Key Program - The precursors to high-mass stars and clusters
- Self-similar Fragmentation Regulated by Magnetic Fields in a Massive Star Forming Filament
- Evolution of column density distributions within Orion~A
- Slingshot Mechanism in Orion: Kinematic Evidence For Ejection of Protostars by Filaments
- Gravity drives the evolution of infrared dark hubs: JVLA observations of SDC13
- Filamentary Fragmentation and Accretion in High-Mass Star-Forming Molecular Clouds
- Gravitational collapse of the OMC-1 region
- Resolving the fragmentation of high line-mass filaments with ALMA: the integral shaped filament in Orion A
- High-mass Star Formation through Filamentary Collapse and Clump-fed Accretion in G22
- A holistic perspective on the dynamics of G035.39-00.33: the interplay between gas and magnetic fields
- Filament Fragmentation in High-Mass Star Formation
- Seeding the Galactic Centre gas stream: gravitational instabilities set the initial conditions for the formation of protocluster clouds
- Kinematic structure of massive star-forming regions - I. Accretion along filaments
- Fragmentation in filamentary molecular clouds
- Interactions of the Infrared bubble N4 with the surroundings
- Slingshot Mechanism for Clusters: Gas Density Regulates Star Density in the Orion Nebula Cluster (M42)
- A feedback-driven bubble G24.136+00.436: a possible site of triggered star formation
- Oscillating Filaments: I - Oscillation and Geometrical Fragmentation
- Relationship between turbulence energy and density variance in the Solar neighbourhood molecular clouds
- Magnetic fields in star forming systems (I): Idealized synthetic signatures of dust polarization and Zeeman splitting in filaments
- Dense gas in molecular cores associated with Planck Galactic cold clumps
- Herschel observations of the Galactic HII region RCW 79
- Magnetic tension and instabilities in the Orion A integral shaped filament
- The straight and isolated G350.54+0.69 filament: density profile and star formation content
- Extended ammonia observations towards the 'Integral-Shaped Filament'
- Gaia: Orion's Integral Shaped Filament is a Standing Wave
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- ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions-IX. A pilot study towards IRDC G034.43+00.24 on multi-scale structures and gas kinematics
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- High-resolution APEX/LAsMA CO and CO (3-2) observation of the G333 giant molecular cloud complex : I. Evidence for gravitational acceleration in hub-filament systems
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- Multiscale Dynamical Scenario of High-mass Star Formation in an IRDC Filament G34
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- Role of Filamentary Structures in the Formation of Two Dense Cores, L1544 and L694-2
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- IC 5146 dark Streamer: is a first reliable candidate of edge collapse, hub-filament systems, and intertwined sub-filaments?
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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