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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/32419
Title: A dust and gas cavity in the disc around CQ Tau revealed by ALMA
Authors: Ubeira Gabellini, M. Giulia
MIOTELLO, ANNA
FACCHINI, STEFANO
RAGUSA, ENRICO
Lodato, Giuseppe
TESTI, Leonardo
Benisty, Myriam
Bruderer, Simon
T. Kurtovic, Nicolás
Andrews, Sean
Carpenter, John
Corder, Stuartt A.
Dipierro, Giovanni
Ercolano, Barbara
FEDELE , DAVIDE 
Guidi, Greta
Henning, Thomas
Isella, Andrea
Kwon, Woojin
Linz, Hendrik
McClure, Melissa
Perez, Laura
Ricci, Luca
Rosotti, Giovanni
Tazzari, Marco
Wilner, David
Issue Date: 2019
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 486
Issue: 4
First Page: 4638
Abstract: The combination of high-resolution and sensitivity offered by ALMA is revolutionizing our understanding of protoplanetary discs, as their bulk gas and dust distributions can be studied independently. In this paper we present resolved ALMA observations of the continuum emission (λ = 1.3 mm) and CO isotopologues (<SUP>12</SUP>CO, <SUP>13</SUP>CO, C<SUP>18</SUP>O, J = 2 - 1) integrated intensity from the disc around the nearby (d = 162 pc), intermediate-mass (M_{\star }=1.67 M_{\odot }) pre-main-sequence star CQ Tau. The data show an inner depression in continuum and in both <SUP>13</SUP>CO and C<SUP>18</SUP>O emission. We employ a thermo-chemical model of the disc reproducing both continuum and gas radial intensity profiles, together with the disc spectral energy distribution. The models show that a gas inner cavity with size between 15 and 25 au is needed to reproduce the data with a density depletion factor between ∼10<SUP>-1</SUP> and ∼10<SUP>-3</SUP>. The radial profile of the distinct cavity in the dust continuum is described by a Gaussian ring centred at R_dust=53 au and with a width of σ =13 au. Three-dimensional gas and dust numerical simulations of a disc with an embedded planet at a separation from the central star of {∼ }20 au and with a mass of {∼ } 6 - 9 M_Jup reproduce qualitatively the gas and dust profiles of the CQ Tau disc. However, a one-planet model appears not to be able to reproduce the dust Gaussian density profile predicted using the thermo-chemical modeling.
URI: http://hdl.handle.net/20.500.12386/32419
URL: https://academic.oup.com/mnras/article/486/4/4638/5482083
ISSN: 0035-8711
DOI: 10.1093/mnras/stz1138
Bibcode ADS: 2019MNRAS.486.4638U
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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