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Constraints on the radial distribution of the dust properties in the CQ Tauri protoplanetary disk

Trotta, F. and Testi, L. and Natta, A. and Isella, A. and Ricci, L. (2013) Constraints on the radial distribution of the dust properties in the CQ Tauri protoplanetary disk. Astronomy and Astrophysics, 558 . Art. No. A64. ISSN 0004-6361. https://resolver.caltech.edu/CaltechAUTHORS:20140108-125525580

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Abstract

Context. Grain growth in protoplanetary disks is the first step towards the formation of the rocky cores of planets. Models predict that grains grow, migrate, and fragment in the disk and predict varying dust properties as a function of radius, age, and physical properties. High-angular resolution observations at more than one (sub-)mm wavelength are the essential tool for constraining grain growth and migration on the disk midplane. Aims. We developed a procedure to analyze self-consistently multiwavelength (sub-)mm continuum interferometric observations of protoplanetary disks to constrain the radial distribution of dust properties. Methods. We apply this technique to existing multifrequency continuum mm observations of the disk around CQ Tau, a A8 pre-main sequence star with a well-studied disk. Results. We demonstrate that our models can be used to simultaneously constrain the disk and dust structure. In CQ Tau, the best-fitting model has a radial dependence of the maximum grain size, which decreases from a few cm in the inner disk (<40 AU) to a few mm at 80 AU. Nevertheless, the currently available dataset does not allow us to exclude the possibility of a uniform grain size distribution at a 3σ level.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1051/0004-6361/201321896DOIArticle
http://arxiv-web3.library.cornell.edu/abs/1308.5070v1arXivDiscussion Paper
ORCID:
AuthorORCID
Testi, L.0000-0003-1859-3070
Isella, A.0000-0001-8061-2207
Additional Information:© 2013 ESO. Article published by EDP Sciences. Received 15 May 2013. Accepted 26 July 2013. Published online 03 October 2013. We thank Tillman Birnstiel for many useful discussions on grain growth in circumstellar disks. This research was partly supported by the Italian Space Agency (ASI) as part of the ASI-INAF agreement number I/005/11/0. A.I. acknowledge support from NSF award AST-1109334.
Funders:
Funding AgencyGrant Number
Agenzia Spaziale Italiana (ASI)I/005/11/0
NSFAST-1109334
Istituto Nazionale di Astrofisica (INAF)UNSPECIFIED
Subject Keywords:protoplanetary disks, stars: pre-main sequence, circumstellar matter, stars: individual: CQ Tauri, dust, extinction, submillimeter: planetary systems
Record Number:CaltechAUTHORS:20140108-125525580
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140108-125525580
Official Citation:Constraints on the radial distribution of the dust properties in the CQ Tauri protoplanetary disk F. Trotta, L. Testi, A. Natta, A. Isella and L. Ricci A&A 558 A64 (2013) DOI: http://dx.doi.org/10.1051/0004-6361/201321896
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43268
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:08 Jan 2014 21:16
Last Modified:22 Nov 2019 23:33

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