The circumstellar disk of HH 30. Searching for signs of disk evolution with multi-wavelength modeling

Autor: David Madlener, Anne Dutrey, Sebastian Wolf, Stephane Guilloteau
Přispěvatelé: AMOR 2012, Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB), aMOR 2011
Jazyk: angličtina
Rok vydání: 2012
Předmět:
[SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
Continuum (design consultancy)
FOS: Physical sciences
Context (language use)
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
Spitzer Space Telescope
Planet
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
010306 general physics
010303 astronomy & astrophysics
Stellar evolution
Solar and Stellar Astrophysics (astro-ph.SR)
Astrophysics::Galaxy Astrophysics
Physics
Star formation
[SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]
Plateau de Bure Interferometer
Astronomy and Astrophysics
[PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]
Astrophysics - Solar and Stellar Astrophysics
13. Climate action
Space and Planetary Science
Spectral energy distribution
Astrophysics::Earth and Planetary Astrophysics
Zdroj: Astronomy and Geophysics
Astronomy and Geophysics, Oxford University Press (OUP), 2012, 543, pp.A81. ⟨10.1051/0004-6361/201117615⟩
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France, p.409, 2011
EPSC-DPS Joint Meeting 2011
EPSC-DPS Joint Meeting 2011, 2011, Nantes, France. pp.409
ISSN: 1366-8781
1468-4004
DOI: 10.1051/0004-6361/201117615⟩
Popis: Circumstellar disks are characteristic for star formation and vanish during the first few Myr of stellar evolution. During this time planets are believed to form in the dense midplane by growth, sedimentation and aggregation of dust. Indicators of disk evolution, such as holes and gaps, can be traced in the spectral energy distribution (SED) and spatially resolved images. We aim to construct a self-consistent model of HH 30 by fitting all available continuum observations simultaneously. New data sets not available in previous studies, such as high-resolution interferometric imaging with the Plateau de Bure Interferometer (PdBI) at lambda = 1.3 mm and SED measured with IRS on the Spitzer Space Telescope in the mid-infrared, put strong constraints on predictions and are likely to provide new insights into the evolutionary state of this object. A parameter study based on simulated annealing was performed to find unbiased best-fit models for independent observations made in the wavelength domain lambda ~ 1 micron ... 4 mm. The method essentially creates a Markov chain through parameter space by comparing predictions generated by our self-consistent continuum radiation transfer code MC3D with observations. We present models of the edge-on circumstellar disk of HH 30 based on observations from the near-infrared to mm-wavelengths that suggest the presence of an inner depletion zone with about 45 AU radius and a steep decline of mm opacity beyond 140 AU. Our modeling indicates that several modes of dust evolution such as growth, settling, and radial migration are taking place in this object. High-resolution observations of HH 30 at different wavelengths with next-generation observatories such as ALMA and JWST will enable the modeling of inhomogeneous dust properties and significantly expand our understanding of circumstellar disk evolution.
Comment: Accepted for publication in Astronomy and Astrophysics
Databáze: OpenAIRE
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