Tracing the magnetic field morphology of the LDN 1172/1174 cloud complex

Abstract

The LDN 1172/1174 cloud complex in the Cepheus Flare region presents a hub-filament structure with the reflection nebula, NGC 7023, illuminated by a Herbig Be star, HD 200775, which consists of the hub with a $\sim$5 pc long narrow filament attached to it. Formation of a sparse cluster of low- and intermediate-mass stars is presently taking place in the hub. The aim of this work is to map the magnetic field geometry of LDN 1172/1174 to understand the role played by the field lines in the formation of the molecular cloud. We made R-band polarization measurements of 249 stars projected on the entire LDN 1172/1174 cloud complex to map the geometry of the magnetic field of this region. The magnetic field geometry constructed from our R-band polarization measurements is found to be parallel to the elongated structure inferred from the column density distribution of the cloud produced using the Herschel images. Our R-band polarization measurements are found to be in good agreement with those obtained from Planck. There is evidence of a possible distortion of the magnetic fields toward the northwestern part of the cloud by HD 200775. The magnetic field strength is estimated as $\sim$30 $\mu$G. The estimated star formation rate (SFR)/mass of 2.0$\pm$1.3 \%Myr${}^{-1}$ and 0.4$\pm$0.3 \%Myr${}^{-1}$ for LDN 1172/1174 and the neighboring cloud complex, LDN 1147/1158, respectively, are found to be consistent with the mean SFR/mass found for the clouds with magnetic field orientations parallel and perpendicular to their elongated structures, respectively. These results support earlier findings that the clouds with magnetic field lines parallel to their long axes seem to have higher SFRs compared to those with the magnetic field orientation perpendicular to the cloud elongation.

References in corpus (112)

• Gaia Data Release 2. Summary of the contents and survey properties
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• Herschel Space Observatory - An ESA facility for far-infrared and submillimetre astronomy
• Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
• Planck 2013 results. I. Overview of products and scientific results
• 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 Stellar IMF from Turbulent Fragmentation
• Density, Velocity, and Magnetic Field Structure in Turbulent Molecular Cloud Models
• Clouds, filaments and protostars: the Herschel Hi-GAL Milky Way
• Characterizing interstellar filaments with Herschel in IC5146
• On the Star Formation Rates in Molecular Clouds
• Gaia Data Release 2: using Gaia parallaxes
• Herschel view of the Taurus B211/3 filament and striations: Evidence of filamentary growth?
• Rapid Formation of Molecular Clouds and Stars in the Solar Neighborhood
• Dissipation in Compressible MHD Turbulence
• Estimating distances from parallaxes
• Filamentary structure of star-forming complexes
• The Star Formation Rate and Gas Surface Density Relation in the Milky Way: Implications for Extragalactic Studies
• 9286 Stars: An Agglomeration of Stellar Polarization Catalogs
• Radiative torques: Analytical Model and Basic Properties
• Planck intermediate results. XXXV. Probing the role of the magnetic field in the formation of structure in molecular clouds
• Planck intermediate results. XIX. An overview of the polarized thermal emission from Galactic dust
• Gravitational Collapse in Turbulent Molecular Clouds. I. Gasdynamical Turbulence
• Radiative Torques on Interstellar Grains: I. Superthermal Spinup
• Dynamic star formation in the massive DR21 filament
• Filamentary Accretion Flows in the Embedded Serpens South Protocluster
• The Turbulent Shock Origin of Proto--Stellar Cores
• Radiative Torques on Interstellar Grains: II. Grain Alignment
• An Imprint of Molecular Cloud Magnetization in the Morphology of the Dust Polarized Emission
• The Formation and Destruction of Molecular Clouds and Galactic Star Formation
• 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
• SDC13 infrared dark clouds: Longitudinally collapsing filaments?
• Clump morphology and evolution in MHD simulations of molecular cloud formation
• Planck intermediate results. XXX. The angular power spectrum of polarized dust emission at intermediate and high Galactic latitudes
• Magnetically Regulated Star Formation in 3D: The Case of Taurus Molecular Cloud Complex
• First Observations of the Magnetic Field Geometry in Pre-stellar Cores
• Magnetic Field Diagnostics Based on Far-Infrared Polarimetry: Tests Using Numerical Simulations
• Filaments in Simulations of Molecular Cloud Formation
• On the origin of non self-gravitating filaments in the ISM
• The Magnetic Field in Taurus Probed by Infrared Polarization
• Helical Fields and Filamentary Molecular Clouds II - Axisymmetric Stability and Fragmentation
• Evolution of emission line activity in intermediate mass young stars
• The Link between Magnetic Fields and Filamentary Clouds: Bimodal Cloud Orientations in the Gould Belt
• Radiative grain alignment in protoplanetary disks: Implications for polarimetric observations
• Global Modeling of Spur Formation in Spiral Galaxies
• The impact of turbulence and magnetic field orientation on star forming filaments
• Gravity drives the evolution of infrared dark hubs: JVLA observations of SDC13
• Rapid directional alignment of velocity and magnetic field in magnetohydrodynamic turbulence
• Dynamics of cluster-forming hub-filament systems: The case of the high-mass star-forming complex Monoceros R2
• What are we learning from the relative orientation between density structures and the magnetic field in molecular clouds?
• Near-Infrared Imaging Polarimetry Toward Serpens South: Revealing the Importance of the Magnetic Field
• Formation of Magnetized Prestellar Cores with Ambipolar Diffusion and Turbulence
• Filamentary Fragmentation and Accretion in High-Mass Star-Forming Molecular Clouds
• Anchoring Magnetic Field in Turbulent Molecular Clouds
• Optical polarimetry toward the Pipe nebula: Revealing the importance of the magnetic field
• Filamentary Accretion Flows in the Infrared Dark Cloud G14.225-0.506 Revealed by ALMA
• Probing the circumstellar structures of T Tauri stars and their relationship to those of Herbig stars
• Using Herschel and Planck observations to delineate the role of magnetic fields in molecular cloud structure
• Detailed Interstellar Polarimetric Properties of the Pipe Nebula at Core Scales
• Magnetized filamentary gas flows feeding the young embedded cluster in Serpens South
• Interferometric Mapping of Magnetic Fields in Star-forming Regions I. W51 e1/e2 Molecular Cores
• Magnetic field evolution in Bok globules
• Submillimeter Array Observations of Magnetic Fields in G240.31+0.07: an Hourglass in a Massive Cluster-forming Core
• Probing accretion of ambient cloud material into the Taurus B211/B213 filament
• The Spitzer survey of interstellar clouds in the Gould Belt. II. The Cepheus Flare observed with IRAC and MIPS
• Structure distribution and turbulence in self-consistently supernova-driven ISM of multiphase magnetized galactic discs
• Magnetic fields towards Ophiuchus-B derived from SCUBA-2 polarization measurements
• Gas Kinematics and Excitation in the Filamentary IRDC G035.39-00.33
• An Imaging Polarimeter(IMPOL) for multi-wavelength observations
• Polarization measurements analysis I. Impact of the full covariance matrix on polarization fraction and angle measurements
• ALMA imaging of the nascent planetary nebula IRAS 15103-5754
• The magnetic field structure in molecular cloud filaments
• The Importance of the Magnetic Field from an SMA-CSO-Combined Sample of Star-Forming Regions
• A $Herschel-SPIRE$ Survey of the Mon R2 Giant Molecular Cloud: Analysis of the Gas Column Density Probability Density Function
• Core and filament formation in magnetized, self-gravitating isothermal layers
• The dense cores and filamentary structure of the molecular cloud in Corona Australis. Herschel SPIRE and PACS observations from the Herschel Gould Belt Survey
• Magnetic field morphology in nearby molecular clouds as revealed by starlight and submillimetre polarization
• The Role of Turbulence and Magnetic Fields in Simulated Filamentary Structure
• Are fibres in molecular cloud filaments real objects?
• Pre-main sequence stars in the Cepheus flare region
• Near-Infrared Imaging Polarimetry of the Serpens Cloud Core: Magnetic Field Structure, Outflows, and Inflows in A Cluster Forming Clump
• Multi-wavelength polarimetric study towards the open cluster NGC 1893
• Optical and submillimetre observations of Bok globules -- tracing the magnetic field from low to high density
• Striations in molecular clouds: Streamers or MHD waves?
• Striations in the Taurus molecular cloud: Kelvin-Helmholtz instability or MHD waves?
• Optical polarimetric study of open clusters: Distribution of Interstellar matter towards NGC 654
• Statistical analysis of the interplay between magnetic fields and filaments hosting Planck Galactic Cold Clumps
• Far-infrared observations of a massive cluster forming in the Monoceros R2 filament hub
• Magnetic field structure around cores with very low luminosity objects
• Herschel Gould Belt Survey Observations of Dense Cores in the Cepheus Flare Clouds
• Magnetic fields in cometary globules - IV. LBN 437
• MHD simulation of the formation of clumps and filaments in quiescent diffuse medium by thermal instability
• Broad-band Optical Polarimetric Studies toward the Galactic young star cluster Be 59
• Filaments and striations: anisotropies in observed, supersonic, highly-magnetised turbulent clouds
• Interpreting the Role of the Magnetic Field from Dust Polarization Maps
• The Link between Magnetic-field Orientations and Star Formation Rates
• Magnetic field structure of IC 63 and IC 59 associated to H II region - Sh 185
• Evidence for Dynamically Important Magnetic Fields in Molecular Clouds
• Magnetic fields in multiple bright-rimmed clouds in different directions of H II region IC1396 - II
• Magnetic field geometry of an unusual cometary cloud Gal 110-13
• On the accretion process in a high-mass star forming region - A multitransitional THz Herschel-HIFI study of ammonia toward G34.26+0.15
• The Planck Cold Clump G108.37-01.06: A Site of Complex Interplay between H II Regions, Young Clusters and Filaments
• A census of young stellar population associated with the Herbig Be star HD 200775
• Polarization of seven MBM clouds at high galactic latitude
• First Sub-pc Sale Mapping of Magnetic Fields in the Vicinity of a Very Low Luminosity Object, L1521F-IRS
• Understanding the links among magnetic fields, filament, the bipolar bubble, and star formation in RCW57A using NIR polarimetry
• Distance, magnetic field and kinematics of a filamentary cloud LDN 1157
• The link between magnetic fields and filamentary clouds II: Bimodal linear mass distributions
• A mapping study of L1174 with 13CO J=2-1 and 12CO J=3-2: star formation triggered by a Herbig Ae/Be star
• A Search for Herbig-Haro Objects in NGC 7023 and Barnard 175

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