NAOC Open IR
Pebbles in an embedded protostellar disk: the case of CB26
Zhang, Chuan-Peng1,2; Launhardt, Ralf2; Liu, Yao3; Tobin, John J.4; Henning, Thomas2
2021-02-02
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN0004-6361
Volume646Pages:17
AbstractContext. Planetary cores are thought to form in proto-planetary disks via the growth of dusty solid material. However, it is unclear how early this process begins. Aims. We study the physical structure and grain growth in the edge-on disk that surrounds the approximate to 1 Myr old low-mass (approximate to 0.55 M fi) protostar embedded in the Bok globule CB26 to examine how much grain growth has already occurred in the protostellar phase. Methods. We combine the spectral energy distribution between 0.9 m and 6.4 cm with high-angular-resolution continuum maps at 1.3, 2.9, and 8.1mm and use the radiative transfer code RADMC-3D to conduct a detailed modeling of the dust emission from the disk and envelope of CB 26. Results. Given the presence of a central disk cavity, we infer inner and outer disk radii of 16+37 8 and 172 +/- 22 au, respectively. The total gas mass in the disk is 7:610 2 M fi, which amounts to approximate to 14% of the mass of the central star. The inner disk contains a compact free-free emission region, which could be related to either a jet or a photoevaporation region. The thermal dust emission from the outer disk is optically thin at millimeter wavelengths, while the emission from the inner disk midplane is moderately optically thick. Our best-fit radiative transfer models indicate that the dust grains in the disk have already grown to pebbles with diameters on the order of 10 cm in size. Residual 8.1mm emission suggests the presence of even larger particles in the inner disk. For the optically thin millimeter dust emission from the outer disk, we derive a mean opacity slope of fi mm approximate to 0:7 +/- 0:4, which is consistent with the presence of large dust grains. Conclusions. The presence of centimeter-sized bodies in the CB26 disk indicates that solids are already growing rapidly during the first million years in a protostellar disk. It is thus possible that Class II disks are already seeded with large particles and may even contain planetesimals.
Keywordprotoplanetary disks radiative transfer stars: individual: CB26 circumstellar matter
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; China Scholarship Council (CSC) in Germany ; China Scholarship Council (CSC) in Germany ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; European Research Council via the ERC ; European Research Council via the ERC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; China Scholarship Council (CSC) in Germany ; China Scholarship Council (CSC) in Germany ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; European Research Council via the ERC ; European Research Council via the ERC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; China Scholarship Council (CSC) in Germany ; China Scholarship Council (CSC) in Germany ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; European Research Council via the ERC ; European Research Council via the ERC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; China Scholarship Council (CSC) in Germany ; China Scholarship Council (CSC) in Germany ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; European Research Council via the ERC ; European Research Council via the ERC
DOI10.1051/0004-6361/202039536
WOS KeywordYOUNG STELLAR OBJECTS ; CIRCUMSTELLAR DISK ; PROTOPLANETARY DISK ; DUST ; MILLIMETER ; ACCRETION ; STAR ; EXTINCTION ; MULTIWAVELENGTH ; DISTRIBUTIONS
Language英语
Funding ProjectNational Natural Science Foundation of China[11703040] ; National Natural Science Foundation of China[11743007] ; National Natural Science Foundation of China[11503087] ; National Natural Science Foundation of China[11973090] ; Natural Science Foundation of Jiangsu Province of China[BK20181513] ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; China Scholarship Council (CSC) in Germany ; NAOC Nebula Talents Program ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; European Research Council via the ERC[83 24 28]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; China Scholarship Council (CSC) in Germany ; China Scholarship Council (CSC) in Germany ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; European Research Council via the ERC ; European Research Council via the ERC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; China Scholarship Council (CSC) in Germany ; China Scholarship Council (CSC) in Germany ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; European Research Council via the ERC ; European Research Council via the ERC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; China Scholarship Council (CSC) in Germany ; China Scholarship Council (CSC) in Germany ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; European Research Council via the ERC ; European Research Council via the ERC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; MPG-CAS Joint Doctoral Promotion Program (DPP) ; China Scholarship Council (CSC) in Germany ; China Scholarship Council (CSC) in Germany ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; European Research Council via the ERC ; European Research Council via the ERC
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000616954800001
PublisherEDP SCIENCES S A
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79162
Collection中国科学院国家天文台
Corresponding AuthorZhang, Chuan-Peng
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
2.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
3.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Peoples R China
4.Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA
Recommended Citation
GB/T 7714
Zhang, Chuan-Peng,Launhardt, Ralf,Liu, Yao,et al. Pebbles in an embedded protostellar disk: the case of CB26[J]. ASTRONOMY & ASTROPHYSICS,2021,646:17.
APA Zhang, Chuan-Peng,Launhardt, Ralf,Liu, Yao,Tobin, John J.,&Henning, Thomas.(2021).Pebbles in an embedded protostellar disk: the case of CB26.ASTRONOMY & ASTROPHYSICS,646,17.
MLA Zhang, Chuan-Peng,et al."Pebbles in an embedded protostellar disk: the case of CB26".ASTRONOMY & ASTROPHYSICS 646(2021):17.
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