Spatial distribution of the aromatic and aliphatic carbonaceous nano-grain features in the protoplanetary disk around HD 100546
arXiv:2011.13773 · doi:10.1051/0004-6361/201936388
Abstract
Carbonaceous nano-grains are present at the surface of protoplanetary disks around Herbig Ae/Be stars, where most of the central star UV energy is dissipated. Efficiently coupled to the gas, nano-grains are able to trace the disk outer flaring parts, and possibly the gaps from which the larger grains are missing. We examine the spatial distribution and evolution of the nano-dust emission in the (pre-)transitional disk HD100546 that shows annular gaps, rings, and spirals, and reveals rich carbon nano-dust spectroscopic signatures (aromatic, aliphatic) in a wide spatial range (~20-200au). We analyse adaptive optics spectroscopic observations from 3 to 4um and imaging and spectroscopic observations from 8 to 12um. We compare the data to model predictions using the THEMIS model with the radiative transfer code POLARIS calculating heating of micro- and nanometric dust grains for a given disk structure. The aromatic features at 3.3, 8.6 and 11.3um, as well as, the aliphatic ones from 3.4 to 3.5um are spatially extended with band morphologies dependong on local physical conditions. The aliphatic-to-aromatic band ratio 3.4/3.3 increases with the distance from the star suggesting UV processing. In the 8-12um observed spectra, features characteristic of aromatic particles and crystalline silicates are detected with their relative contribution changing with distance to the star. The model predicts that the features and adjacent continuum are due to different combinations of grain sub-populations, with a dependence on the UV field intensity. Shorter wavelength features are dominated by the smallest grains (< 0.7nm) throughout the disk, while at longer wavelengths what dominates the emission close to the star is a mix of several grain populations, and far away from the star is the largest nano-grain population.
arXiv commentaccepted for publication in A&A, abridged abstract to comply with arxiv requirements
References in corpus (56)
- Gaia Data Release 2. Summary of the contents and survey properties
- Infrared Emission from Interstellar Dust. IV. The Silicate-Graphite-PAH Model in the Post-Spitzer Era
- Spectral Energy Distributions of T Tauri Stars With Passive Circumstellar Disks
- Infrared Emission from Interstellar Dust. II. The Diffuse Interstellar Medium
- Infrared Emission from Interstellar Dust. I. Stochastic Heating of Small Grains
- ISO spectroscopy of circumstellar dust in 14 Herbig Ae/Be systems: towards an understanding of dust processing
- 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
- The global dust modelling framework THEMIS (The Heterogeneous dust Evolution Model for Interstellar Solids)
- ISO spectroscopy of disks around Herbig Ae/Be stars
- The origin of crystalline silicates in the Herbig Be star HD100546 and in comet Hale-Bopp
- Radiative transfer with POLARIS: I. Analysis of magnetic fields through synthetic dust continuum polarization measurements
- Line Emission from Gas in Optically Thick Dust Disks around Young Stars
- Resolving the HD 100546 Protoplanetary System with the Gemini Planet Imager: Evidence for Multiple Forming, Accreting Planets
- Spitzer's view on aromatic and aliphatic hydrocarbon emission in Herbig Ae stars
- Identifying gaps in flaring Herbig Ae/Be disks using spatially resolved mid-infrared imaging. Are all group I disks transitional?
- The complex structure of the disk around HD100546: the inner few astronomical units
- HST/NICMOS2 coronagraphic observations of the circumstellar environment of three old PMS stars: HD 100546, SAO 206462 and MWC 480
- Mapping PAH sizes in NGC 7023 with SOFIA
- Dust variations in the diffuse interstellar medium: constraints on Milky Way dust from Planck-HFI observations
- The SPHERE view of the planet-forming disk around HD100546
- Tracing the inner edge of the disk around HD 100546 with Ro-vibrational CO Emission Lines
- Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO
- Evidence for CO depletion in the inner regions of gas-rich protoplanetary disks
- A hidden reservoir of Fe/FeS in interstellar silicates?
- PAHs in Circumstellar Disks around Herbig Ae/Be stars
- HD100546 Multi-Epoch Scattered-Light Observations
- An Optical/near-infrared investigation of HD 100546 b with the Gemini Planet Imager and MagAO
- Constraining the structure of the planet-forming region in the disk of the Herbig Be star HD 100546
- Mixed aliphatic and aromatic composition of evaporating very small grains in NGC 7023 revealed by the 3.4/3.3 m ratio
- High-Resolution ALMA Observations of HD100546: Asymmetric Circumstellar Ring, and Circumplanetary Disk Upper Limits
- Spatial separation of small and large grains in the transitional disk around the young star IRS 48
- First results of the Herschel Key Program 'Dust, Ice and Gas in Time': Dust and Gas Spectroscopy of HD 100546
- Multiple spiral patterns in the transitional disk of HD 100546
- Spatially resolved PAH emission in the inner disks of Herbig Ae/Be stars
- Detection of CH+ emission from the disc around HD100546
- Long Baseline Observations of the HD100546 Protoplanetary Disk with ALMA
- Planet or Brown Dwarf? Inferring the Companion Mass in HD 100546 from the Wall Shape using Mid-Infrared Interferometry
- ROHSA: Regularized Optimization for Hyper-Spectral Analysis - Application to phase separation of 21 cm data
- Polycyclic Aromatic Hydrocarbon in Protoplanetary Disks around Herbig Ae/Be and T Tauri Stars
- DIGIT survey of far-infrared lines from protoplanetary discs: II. CO
- A survey for near-infrared H2 emission in Herbig Ae/Be stars: emission from the outer disks of HD 97048 and HD 100546
- Mantle formation, coagulation and the origin of cloud/core-shine: II. Comparison with observations
- Resolving the gap and AU-scale asymmetries in the pre-transitional disk of V1247 Orionis
- The cycling of carbon into and out of dust
- A Resolved Circumstellar Disk around the Herbig Ae Star HD 100546 in the Thermal Infrared
- Spatially Resolved 3 micron Spectroscopy of Elias 1: Origin of Diamonds in Protoplanetary Disks
- Resolving HD 100546 disc in the mid-infrared: Small inner disc and asymmetry near the gap
- Modeling dust emission in the Magellanic Clouds with Spitzer and Herschel
- Magnetic fields in molecular clouds: Limitations of the analysis of Zeeman observations
- A multi-instrument and multi-wavelength high angular resolution study of MWC614: quantum heated particles inside the disk cavity
- Asymmetric mid-plane gas in ALMA images of HD~100546
- Nano carbon dust emission in proto-planetary disks: the aliphatic-aromatic components
- Interferometric Evidence for Quantum Heated Particles in the Inner Region of Protoplanetary Disks around Herbig Stars
- The Fornax 3D project: dust mix and gas properties in the center of early-type galaxy FCC 167
- GG Tau A: Dark shadows on the ringworld
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- The disk of FU Orionis viewed with MATISSE/VLTI: first interferometric observations in and bands
- First MATISSE L-band observations of HD 179218. Is the inner 10 au region rich in carbon dust particles?
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- The essential elements of dust evolution: a-C(:H) nanoparticle sub-structures and photo-fragmentation
- Polycyclic aromatic hydrocarbon (PAH) abundances in the disk around T Chamaeleontis (T Cha): PAH sizes, ionization fraction, and mass during JWST observations