Modelling of dust emission of a filament in the Taurus molecular cloud
arXiv:2310.20585 · doi:10.1051/0004-6361/202347710
Abstract
Dust emission is an important tool in studies of star-forming clouds, as a tracer of column density and indirectly via the dust evolution that is connected to the history and physical conditions of the clouds. We examine radiative transfer (RT) modelling of dust emission over an extended cloud region, using a filament in the Taurus molecular cloud as an example. We examine how well far-infrared observations can be used to determine both the cloud and the dust properties. Using different assumptions of the cloud shape, radiation field, and dust properties, we fit RT models to Herschel observations of the Taurus filament. Further comparisons are made with measurements of the near-infrared extinction. The models are used to examine the degeneracies between the different cloud parameters and the dust properties. The results show significant dependence on the assumed cloud structure and the spectral shape of the external radiation field. If these are constrained to the most likely values, the observations can be explained only if the dust far-infrared (FIR) opacity has increased by a factor of 2-3 relative to the values in diffuse medium. However, a narrow range of FIR wavelengths provides only weak evidence of the spatial variations in dust, even in the models covering several square degrees of a molecular cloud. The analysis of FIR dust emission is affected by several sources of uncertainty. Further constraints are therefore needed from observations at shorter wavelengths, especially regarding the trends in dust evolution.
arXiv commentAccepted for publication in A&A
References in corpus (62)
- The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
- Herschel Space Observatory - An ESA facility for far-infrared and submillimetre astronomy
- The Spitzer Space Telescope Mission
- Interstellar Dust Grains
- The Infrared Astronomical Mission AKARI
- Planck 2013 results. XI. All-sky model of thermal dust emission
- Characterizing interstellar filaments with Herschel in IC5146
- The evolution of amorphous hydrocarbons in the ISM: dust modelling from a new vantage point
- The global dust SED: Tracing the nature and evolution of dust with DustEM
- Mapping the interstellar dust with near-infrared observations: An optimized multi-band technique
- The Taurus Spitzer Survey: New Candidate Taurus Members Selected Using Sensitive Mid-Infrared Photometry
- The Effect of Line of Sight Temperature Variation and Noise on Dust Continuum Observations
- Inverse temperature dependence of the dust submillimeter spectral index
- Planck intermediate results. XVII. Emission of dust in the diffuse interstellar medium from the far-infrared to microwave frequencies
- Reconstructing the density and temperature structure of prestellar cores from data: A case study for B68 and L1689B
- Planck intermediate results. XXIX. All-sky dust modelling with Planck, IRAS, and WISE observations
- The Effect of Noise on the Dust Temperature - Spectral Index Correlation
- The Astrodust+PAH Model: A Unified Description of the Extinction, Emission, and Polarization from Dust in the Diffuse Interstellar Medium
- Structure and kinematics of the Taurus star-forming region from Gaia-DR2 and VLBI astrometry
- Changes Of Dust Opacity With Density in the Orion A Molecular Cloud
- NICEST, a near-infrared color excess method tailored for small-scale structures
- Temperature as a third dimension in column-density mapping of dusty astrophysical structures associated with star formation
- The Herschel and JCMT Gould Belt Surveys: Constraining Dust Properties in the Perseus B1 Clump with PACS, SPIRE, and SCUBA-2
- Submillimetre point sources from the Archeops experiment: Very Cold Clumps in the Galactic Plane
- Dust SEDs in the era of Herschel and Planck: a Hierarchical Bayesian fitting technique
- Evidence for Environmental Changes in the Submillimeter Dust Opacity
- Variation in dust properties in a dense filament of the Taurus molecular complex (L1506)
- Variations of the spectral index of dust emissivity from Hi-GAL observations of the Galactic plane
- Dust models compatible with Planck intensity and polarization data in translucent lines of sight
- Dust Emissivity Variations In the Milky Way
- Far-infrared dust opacity and visible extinction in the Polaris Flare
- Galactic cold cores VI. Dust opacity spectral index
- Properties of Galactic cirrus clouds observed by BOOMERanG
- Probing accretion of ambient cloud material into the Taurus B211/B213 filament
- The degeneracy between dust colour temperature and spectral index. Comparison of methods for estimating the beta(T) relation
- Galactic cold cores V. Dust opacity
- Probing changes of dust properties along a chain of solar-type prestellar and protostellar cores in Taurus with NIKA
- The degeneracy between the dust colour temperature and the spectral index. The problem of multiple chi^2 minima
- Dust properties inside molecular clouds from coreshine modeling and observations
- A 3D view of the Taurus star-forming region by Gaia and Herschel: multiple populations related to the filamentary molecular cloud
- Mantle formation, coagulation and the origin of cloud/core-shine: II. Comparison with observations
- Dust models post-Planck: constraining the far-infrared opacity of dust in the diffuse interstellar medium
- The effect of temperature mixing on the observable (T,beta)-relation of interstellar dust clouds
- Dust Emissivity in the Star-Forming Filament OMC 2/3
- SOC program for dust continuum radiative transfer
- Detection and characterization of a 500 mic dust emissivity excess in the Galactic Plane using Herschel/Hi-GAL observations
- L1495 Revisited: A PPMAP View of a Star-Forming Filament
- Herschel and SCUBA-2 observations of dust emission in a sample of Planck cold clumps
- L1506: a prestellar core in the making
- Uncertainties and biases of source masses derived from fits of integrated fluxes or image intensities
- Fermi-LAT gamma-ray study of the interstellar medium and cosmic rays in the Chamaeleon Molecular-Cloud Complex: A look at the dark gas as optically thick HI
- Confirmation of Enhanced Long Wavelength Dust Emission in OMC 2/3
- A PPMAP analysis of the filamentary structures in Ophiuchus L1688 and L1689
- 3D Radiative Transfer Modelling and Virial Analysis of Starless Cores in the B10 Region of the Taurus Molecular Cloud
- Spectroscopy of diffuse light in dust clouds. Scattered light and the solar neighbourhood radiation field
- Towards a 3D kinetic tomography of Taurus clouds: I -- Linking neutral potassium and dust
- Optical and UV surface brightness of translucent dark nebulae: Dust albedo, radiation field and fluorescence emission by H2
- Dust emission, extinction, and scattering in LDN 1642
- Filaments in the OMC-3 cloud and uncertainties in estimates of filament profiles
- Multi-wavelength observations and modelling of a quiescent cloud LDN1512
- Optimal extinction measurements - I. Single-object extinction inference
- Comparison of modified black-body fits for the estimation of dust optical depths in interstellar clouds