PMO OpenIR
The properties of the inner disk around HL Tau: Multi-wavelength modeling of the dust emission
Liu, Yao1,2,3; Henning, Thomas1; Carrasco-Gonzalez, Carlos4; Chandler, Claire J.5; Linz, Hendrik1; Birnstiel, Til1; van Boekel, Roy1; Perez, Laura M.6; Flock, Mario7; Testi, Leonardo8,9,10; Rodriguez, Luis F.4; Galvan-Madrid, Roberto4
2017-11-16
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN1432-0746
Volume607Pages:10
Corresponding AuthorLiu, Yao(yliu@mpia.de)
AbstractWe conducted a detailed radiative transfer modeling of the dust emission from the circumstellar disk around HL Tau. The goal of our study is to derive the surface density profile of the inner disk and its structure. In addition to the Atacama Large Millimeter/submillimeter Array images at Band 3 (2.9 mm), Band 6 (1.3 mm), and Band 7 (0.87 mm), the most recent Karl G. Jansky Very Large Array (VLA) observations at 7mm were included in the analysis. A simulated annealing algorithm was invoked to search for the optimum model. The radiative transfer analysis demonstrates that most radial components (i.e., > 6AU) of the disk become optically thin at a wavelength of 7 mm, which allows us to constrain, for the first time, the dust density distribution in the inner region of the disk. We found that a homogeneous grain size distribution is not sufficient to explain the observed images at different wavelengths simultaneously, while models with a shallower grain size distribution in the inner disk work well. We found clear evidence that larger grains are trapped in the first bright ring. Our results imply that dust evolution has already taken place in the disk at a relatively young (i.e., similar to 1 Myr) age. We compared the midplane temperature distribution, optical depth, and properties of various dust rings with those reported previously. Using the Toomre parameter, we briefly discussed the gravitational instability as a potential mechanism for the origin of the dust clump detected in the first bright ring via the VLA observations.
Keywordprotoplanetary disks radiative transfer stars: formation stars: individual: HL Tau
DOI10.1051/0004-6361/201629786
WOS KeywordSPECTRAL ENERGY-DISTRIBUTIONS ; SELF-CONSISTENT MODEL ; PLANET FORMATION ; ACCRETION DISKS ; CIRCUMSTELLAR DISKS ; PROTOPLANETARY DISK ; GRAIN EVOLUTION ; STARS ; OBJECTS ; REGION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000415762200005
PublisherEDP SCIENCES S A
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22581
Collection中国科学院紫金山天文台
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, Jiangsu, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
4.Inst Radioastron & Astrofis UNAM, Apartado Postal 3-72 Xangari, Morelia 58089, Michoacan, Mexico
5.Natl Radio Astron Observ, POB O,1003 Lopezville Rd, Socorro, NM 87801 USA
6.Max Planck Inst Radioastron Bonn, Hugel 69, D-53121 Bonn, Germany
7.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
8.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
9.INAF Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy
10.Excellence Cluster Universe, Boltzmann Str 2, D-85748 Garching, Germany
Recommended Citation
GB/T 7714
Liu, Yao,Henning, Thomas,Carrasco-Gonzalez, Carlos,et al. The properties of the inner disk around HL Tau: Multi-wavelength modeling of the dust emission[J]. ASTRONOMY & ASTROPHYSICS,2017,607:10.
APA Liu, Yao.,Henning, Thomas.,Carrasco-Gonzalez, Carlos.,Chandler, Claire J..,Linz, Hendrik.,...&Galvan-Madrid, Roberto.(2017).The properties of the inner disk around HL Tau: Multi-wavelength modeling of the dust emission.ASTRONOMY & ASTROPHYSICS,607,10.
MLA Liu, Yao,et al."The properties of the inner disk around HL Tau: Multi-wavelength modeling of the dust emission".ASTRONOMY & ASTROPHYSICS 607(2017):10.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, Yao]'s Articles
[Henning, Thomas]'s Articles
[Carrasco-Gonzalez, Carlos]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, Yao]'s Articles
[Henning, Thomas]'s Articles
[Carrasco-Gonzalez, Carlos]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, Yao]'s Articles
[Henning, Thomas]'s Articles
[Carrasco-Gonzalez, Carlos]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.