The Astrophysical Journal (Jan 2023)
Early Planet Formation in Embedded Disks (eDisk). V. Possible Annular Substructure in a Circumstellar Disk in the Ced110 IRS4 System
- Jinshi Sai (Insa Choi),
- Hsi-Wei Yen,
- Nagayoshi Ohashi,
- John J. Tobin,
- Jes K. Jørgensen,
- Shigehisa Takakuwa,
- Kazuya Saigo,
- Yusuke Aso,
- Zhe-Yu Daniel Lin,
- Patrick M. Koch,
- Yuri Aikawa,
- Christian Flores,
- Itziar de Gregorio-Monsalvo,
- Ilseung Han,
- Miyu Kido,
- Woojin Kwon,
- Shih-Ping Lai,
- Chang Won Lee,
- Jeong-Eun Lee,
- Zhi-Yun Li,
- Leslie W. Looney,
- Shoji Mori,
- Nguyen Thi Phuong,
- Alejandro Santamaría-Miranda,
- Rajeeb Sharma,
- Travis J. Thieme,
- Kengo Tomida,
- Jonathan P. Williams
Affiliations
- Jinshi Sai (Insa Choi)
- ORCiD
- Academia Sinica Institute of Astronomy and Astrophysics , 11F of Astronomy-Mathematics Building, AS/NTU, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan ; [email protected]
- Hsi-Wei Yen
- ORCiD
- Academia Sinica Institute of Astronomy and Astrophysics , 11F of Astronomy-Mathematics Building, AS/NTU, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan ; [email protected]
- Nagayoshi Ohashi
- ORCiD
- Academia Sinica Institute of Astronomy and Astrophysics , 11F of Astronomy-Mathematics Building, AS/NTU, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan ; [email protected]
- John J. Tobin
- ORCiD
- National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903 USA
- Jes K. Jørgensen
- ORCiD
- Niels Bohr Institute, University of Copenhagen , Øster Voldgade 5–7, DK-1350 Copenhagen K., Denmark
- Shigehisa Takakuwa
- ORCiD
- Academia Sinica Institute of Astronomy and Astrophysics , 11F of Astronomy-Mathematics Building, AS/NTU, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan ; [email protected]; Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University , 1-21-35 Korimoto, Kagoshima, Kagoshima 890-0065, Japan
- Kazuya Saigo
- ORCiD
- Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University , 1-21-35 Korimoto, Kagoshima, Kagoshima 890-0065, Japan
- Yusuke Aso
- ORCiD
- Korea Astronomy and Space Science Institute , 776 Daedeok-daero, Yuseong-gu, Daejeon 34055, Republic of Korea
- Zhe-Yu Daniel Lin
- ORCiD
- University of Virginia , 530 McCormick Road, Charlottesville, Virginia 22904, USA
- Patrick M. Koch
- ORCiD
- Academia Sinica Institute of Astronomy and Astrophysics , 11F of Astronomy-Mathematics Building, AS/NTU, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan ; [email protected]
- Yuri Aikawa
- ORCiD
- Department of Astronomy, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Christian Flores
- ORCiD
- Academia Sinica Institute of Astronomy and Astrophysics , 11F of Astronomy-Mathematics Building, AS/NTU, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan ; [email protected]
- Itziar de Gregorio-Monsalvo
- ORCiD
- European Southern Observatory , Alonso de Cordova 3107, Casilla 19, Vitacura, Santiago, Chile
- Ilseung Han
- ORCiD
- Korea Astronomy and Space Science Institute , 776 Daedeok-daero, Yuseong-gu, Daejeon 34055, Republic of Korea; Division of Astronomy and Space Science, University of Science and Technology , 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
- Miyu Kido
- ORCiD
- Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University , 1-21-35 Korimoto, Kagoshima, Kagoshima 890-0065, Japan
- Woojin Kwon
- ORCiD
- Department of Earth Science Education, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea; SNU Astronomy Research Center, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- Shih-Ping Lai
- ORCiD
- Academia Sinica Institute of Astronomy and Astrophysics , 11F of Astronomy-Mathematics Building, AS/NTU, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan ; [email protected]; Institute of Astronomy, National Tsing Hua University , No. 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan; Center for Informatics and Computation in Astronomy, National Tsing Hua University , No. 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan; Department of Physics, National Tsing Hua University , No. 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan
- Chang Won Lee
- ORCiD
- Korea Astronomy and Space Science Institute , 776 Daedeok-daero, Yuseong-gu, Daejeon 34055, Republic of Korea; Division of Astronomy and Space Science, University of Science and Technology , 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
- Jeong-Eun Lee
- ORCiD
- Department of Physics and Astronomy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- Zhi-Yun Li
- ORCiD
- University of Virginia , 530 McCormick Road, Charlottesville, Virginia 22904, USA
- Leslie W. Looney
- ORCiD
- Department of Astronomy, University of Illinois , 1002 West Green Street, Urbana, IL 61801, USA
- Shoji Mori
- ORCiD
- Astronomical Institute, Graduate School of Science, Tohoku University , Sendai 980-8578, Japan
- Nguyen Thi Phuong
- ORCiD
- Korea Astronomy and Space Science Institute , 776 Daedeok-daero, Yuseong-gu, Daejeon 34055, Republic of Korea; Department of Astrophysics, Vietnam National Space Center, Vietnam Academy of Science and Techonology , 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
- Alejandro Santamaría-Miranda
- ORCiD
- European Southern Observatory , Alonso de Cordova 3107, Casilla 19, Vitacura, Santiago, Chile
- Rajeeb Sharma
- ORCiD
- Niels Bohr Institute, University of Copenhagen , Øster Voldgade 5-7, DK-1350, Copenhagen K, Denmark
- Travis J. Thieme
- ORCiD
- Institute of Astronomy, National Tsing Hua University , No. 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan; Center for Informatics and Computation in Astronomy, National Tsing Hua University , No. 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan; Department of Physics, National Tsing Hua University , No. 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan
- Kengo Tomida
- ORCiD
- Astronomical Institute, Graduate School of Science, Tohoku University , Sendai 980-8578, Japan
- Jonathan P. Williams
- ORCiD
- Institute for Astronomy, University of Hawai’i at Mānoa , 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- DOI
- https://doi.org/10.3847/1538-4357/ace52d
- Journal volume & issue
-
Vol. 954,
no. 1
p. 67
Abstract
We have observed the Class 0/I protostellar system Ced110 IRS4 at an angular resolution of 0.″05 (∼10 au) as part of the Atacama Large Millimeter/submillimeter Array large program, Early Planet Formation in Embedded Disks. The 1.3 mm dust continuum emission reveals that Ced110 IRS4 is a binary system with a projected separation of ∼250 au. The continuum emissions associated with the main source and its companion, named Ced110 IRS4A and IRS4B, respectively, exhibit disk-like shapes and likely arise from dust disks around the protostars. The continuum emission of Ced110 IRS4A has a radius of ∼91.7 au (∼0.″485) and shows bumps along its major axis with an asymmetry. The bumps can be interpreted as a shallow, ring-like structure at a radius of ∼40 au (∼0.″2) in the continuum emission, as demonstrated from two-dimensional intensity distribution models. A rotation curve analysis on the C ^18 O and ^13 CO J = 2–1 lines reveals the presence of a Keplerian disk within a radius of 120 au around Ced110 IRS4A, which supports the interpretation that the dust continuum emission arises from a disk. The ring-like structure in the dust continuum emission might indicate a possible annular substructure in the surface density of the embedded disk, although the possibility that it is an apparent structure due to the optically thick continuum emission cannot be ruled out.
Keywords
- Planet formation
- Star formation
- Low mass stars
- Protoplanetary disks
- Protostars
- Young stellar objects
