Early Planet Formation in Embedded Disks (eDisk). I. Overview of the Program and First Results
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Early Planet Formation in Embedded Disks (eDisk). I. Overview of the Program and First Results. / Ohashi, Nagayoshi; Tobin, John J.; Jørgensen, Jes K.; Takakuwa, Shigehisa; Sheehan, Patrick; Aikawa, Yuri; Li, Zhi Yun; Looney, Leslie W.; Williams, Jonathan P.; Aso, Yusuke; Sharma, Rajeeb; Sai (Insa Choi), Jinshi; Yamato, Yoshihide; Lee, Jeong Eun; Tomida, Kengo; Yen, Hsi Wei; Encalada, Frankie J.; Flores, Christian; Gavino, Sacha; Kido, Miyu; Han, Ilseung; Lin, Zhe Yu Daniel; Narayanan, Suchitra; Phuong, Nguyen Thi; Santamaría-Miranda, Alejandro; Thieme, Travis J.; van ’t Hoff, Merel L.R.; de Gregorio-Monsalvo, Itziar; Koch, Patrick M.; Kwon, Woojin; Lai, Shih Ping; Lee, Chang Won; Plunkett, Adele; Saigo, Kazuya; Hirano, Shingo; Lam, Ka Ho; Mori, Shoji.
In: Astrophysical Journal, Vol. 951, No. 1, 8, 28.06.2023.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Early Planet Formation in Embedded Disks (eDisk). I. Overview of the Program and First Results
AU - Ohashi, Nagayoshi
AU - Tobin, John J.
AU - Jørgensen, Jes K.
AU - Takakuwa, Shigehisa
AU - Sheehan, Patrick
AU - Aikawa, Yuri
AU - Li, Zhi Yun
AU - Looney, Leslie W.
AU - Williams, Jonathan P.
AU - Aso, Yusuke
AU - Sharma, Rajeeb
AU - Sai (Insa Choi), Jinshi
AU - Yamato, Yoshihide
AU - Lee, Jeong Eun
AU - Tomida, Kengo
AU - Yen, Hsi Wei
AU - Encalada, Frankie J.
AU - Flores, Christian
AU - Gavino, Sacha
AU - Kido, Miyu
AU - Han, Ilseung
AU - Lin, Zhe Yu Daniel
AU - Narayanan, Suchitra
AU - Phuong, Nguyen Thi
AU - Santamaría-Miranda, Alejandro
AU - Thieme, Travis J.
AU - van ’t Hoff, Merel L.R.
AU - de Gregorio-Monsalvo, Itziar
AU - Koch, Patrick M.
AU - Kwon, Woojin
AU - Lai, Shih Ping
AU - Lee, Chang Won
AU - Plunkett, Adele
AU - Saigo, Kazuya
AU - Hirano, Shingo
AU - Lam, Ka Ho
AU - Mori, Shoji
N1 - Publisher Copyright: © 2023. The Author(s). Published by the American Astronomical Society.
PY - 2023/6/28
Y1 - 2023/6/28
N2 - We present an overview of the Large Program, “Early Planet Formation in Embedded Disks (eDisk),” conducted with the Atacama Large Millimeter/submillimeter Array (ALMA). The ubiquitous detections of substructures, particularly rings and gaps, in protoplanetary disks around T Tauri stars raise the possibility that at least some planet formation may have already started during the embedded stages of star formation. In order to address exactly how and when planet formation is initiated, the program focuses on searching for substructures in disks around 12 Class 0 and 7 Class I protostars in nearby (<200 pc) star-forming regions through 1.3 mm continuum observations at a resolution of ∼7 au (0.″04). The initial results show that the continuum emission, mostly arising from dust disks around the sample protostars, has relatively few distinctive substructures, such as rings and spirals, in marked contrast to Class II disks. The dramatic difference may suggest that substructures quickly develop in disks when the systems evolve from protostars to Class II sources, or alternatively that high optical depth of the continuum emission could obscure internal structures. Kinematic information obtained through CO isotopologue lines and other lines reveals the presence of Keplerian disks around protostars, providing us with crucial physical parameters, in particular, the dynamical mass of the central protostars. We describe the background of the eDisk program, the sample selection and their ALMA observations, and the data reduction, and we also highlight representative first-look results.
AB - We present an overview of the Large Program, “Early Planet Formation in Embedded Disks (eDisk),” conducted with the Atacama Large Millimeter/submillimeter Array (ALMA). The ubiquitous detections of substructures, particularly rings and gaps, in protoplanetary disks around T Tauri stars raise the possibility that at least some planet formation may have already started during the embedded stages of star formation. In order to address exactly how and when planet formation is initiated, the program focuses on searching for substructures in disks around 12 Class 0 and 7 Class I protostars in nearby (<200 pc) star-forming regions through 1.3 mm continuum observations at a resolution of ∼7 au (0.″04). The initial results show that the continuum emission, mostly arising from dust disks around the sample protostars, has relatively few distinctive substructures, such as rings and spirals, in marked contrast to Class II disks. The dramatic difference may suggest that substructures quickly develop in disks when the systems evolve from protostars to Class II sources, or alternatively that high optical depth of the continuum emission could obscure internal structures. Kinematic information obtained through CO isotopologue lines and other lines reveals the presence of Keplerian disks around protostars, providing us with crucial physical parameters, in particular, the dynamical mass of the central protostars. We describe the background of the eDisk program, the sample selection and their ALMA observations, and the data reduction, and we also highlight representative first-look results.
U2 - 10.3847/1538-4357/acd384
DO - 10.3847/1538-4357/acd384
M3 - Journal article
AN - SCOPUS:85163803358
VL - 951
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1
M1 - 8
ER -
ID: 360822349