Ring structure in the MWC 480 disk revealed by ALMA
Liu, Yao1,2,3; Dipierro, Giovanni4; Ragusa, Enrico5; Lodato, Giuseppe5; Herczeg, Gregory J.6; Long, Feng6; Harsono, Daniel7; Boehler, Yann8,9; Menard, Francois9; Johnstone, Doug10,11; Pascucci, Ilaria12,13; Pinilla, Paola14; Salyk, Colette15; van der Plas, Gerrit9; Cabrit, Sylvie9,16; Fischer, William J.17; Hendler, Nathan12; Manara, Carlo F.18; Nisini, Brunella19; Rigliaco, Elisabetta20; Avenhaus, Henning1; Banzatti, Andrea12; Gully-Santiago, Michael21,22
Corresponding AuthorLiu, Yao(
AbstractGap-like structures in protoplanetary disks are likely related to planet formation processes. In this paper, we present and analyze high-resolution (0.17 '' x 0.11 '') 1.3 mm ALMA continuum observations of the protoplanetary disk around the Herbig Ae star MWC480. Our observations show for the first time a gap centered at similar to 74 au with a width of similar to 23 au, surrounded by a bright ring centered at similar to 98 au from the central star. Detailed radiative transfer modeling of the ALMA image and the broadband spectral energy distribution is used to constrain the surface density profile and structural parameters of the disk. If the width of the gap corresponds to 4-8 times the Hill radius of a single forming planet, then the putative planet would have a mass of 0.4-3 M-J. We test this prediction by performing global three-dimensional smoothed particle hydrodynamic gas/dust simulations of disks hosting a migrating and accreting planet. We find that the dust emission across the disk is consistent with the presence of an embedded planet with a mass of similar to 2.3 M-J at an orbital radius of similar to 78 au. Given the surface density of the best-fit radiative transfer model, the amount of depleted mass in the gap is higher than the mass of the putative planet, which satisfies the basic condition for the formation of such a planet.
Keywordprotoplanetary disks planet-disk interactions radiative transfer stars: formation stars: individual: MWC 480
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000456971400001
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Document Type期刊论文
Corresponding AuthorLiu, Yao
Affiliation1.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
2.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Peoples R China
4.Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England
5.Univ Milan, Dipartimento Fis, Via Celoria 16, I-20133 Milan, Italy
6.Peking Univ, Kavli Inst Astron & Astrophys, Yiheyuan 5, Beijing 100871, Peoples R China
7.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands
8.Rice Univ, Dept Phys & Astron, Main St, Houston, TX 77005 USA
9.Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France
10.NRC Herzberg Astron & Astrophys, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada
11.Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 5C2, Canada
12.Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA
13.NASA, Earths Other Solar Syst Team, Nexus Exoplanet Syst Sci, Moffett Field, CA 20546 USA
14.Univ Arizona, Dept Astron, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA
15.Vassar Coll, Dept Phys & Astron, 124 Raymond Ave, Poughkeepsie, NY 12604 USA
16.Univ PSL, Sorbonne Univ, Observ Paris, CNRS,LERMA, F-75014 Paris, France
17.Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA
18.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
19.Osserv Astron Roma, INAF, Via Frascati 33, I-00040 Monte Porzio Catone, Italy
20.Osserv Astron Padova, INAF, Vicolo Osservatorio 5, I-35122 Padua, Italy
21.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA
22.Bay Area Environm Res Inst, Moffett Field, CA 94035 USA
Recommended Citation
GB/T 7714
Liu, Yao,Dipierro, Giovanni,Ragusa, Enrico,et al. Ring structure in the MWC 480 disk revealed by ALMA[J]. ASTRONOMY & ASTROPHYSICS,2019,622:11.
APA Liu, Yao.,Dipierro, Giovanni.,Ragusa, Enrico.,Lodato, Giuseppe.,Herczeg, Gregory J..,...&Gully-Santiago, Michael.(2019).Ring structure in the MWC 480 disk revealed by ALMA.ASTRONOMY & ASTROPHYSICS,622,11.
MLA Liu, Yao,et al."Ring structure in the MWC 480 disk revealed by ALMA".ASTRONOMY & ASTROPHYSICS 622(2019):11.
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