2019 Fiscal Year Annual Research Report
ALMA-IMF: ALMA Transforms the View of the Origin of Stellar Masses
| Project/Area Number |
18H01259
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
サヌエザ パトリシオ 国立天文台, アルマプロジェクト, 特任助教 (70769348)
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| Co-Investigator(Kenkyū-buntansha) |
中村 文隆 国立天文台, 科学研究部, 准教授 (20291354)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Keywords | High-Mass Star Formation / Molecular Clouds / ALMA / IMF |
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| Outline of Annual Research Achievements |
As planned, during the second fiscal year we focused on the enhanced data products. Self-calibration has been performed for all fields in both the 12 and 7 m array observations. Continuum images are finished and currently used for the first science articles.
The first paper from the Japanese team is nearly finished, including magnetic field observations. The PI of the project and the hired postdoc have published several articles related to ALMA-IMF and presented in several conferences and workshops, including a public talk.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The enhanced data products (self-calibration) were produced on time as expected. Analysis of the data has been done simultaneously. In addition to working on the paper focused on G10.62, the PI and the hired postdoc have been analyzing different algorithms for source extraction. The source extraction is key for the final goal of the project, produce the core mass function (CMF) for all fields in the survey.
Early results have been presented in conferences and analysis plans have been successfully applied in other projects, producing several papers (one as first author for the KAKENHI PI and another one as PI for the hired postdoc, and several other articles as co-authors).
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| Strategy for Future Research Activity |
During the final fiscal year we will make the data cubes. All major spectral lines will be imaged. It is the plan to prepare and release to the astronomical community the continuum and line cubes used in the first publication. The first articles from the whole international team will be published. Our Japanese team will focus on the study of the G10.62 region as a first publication.
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| Remarks |
Benjamin Wu gave a public talk to general public in the Tokyo Space Cafe, Tokyo, Japan. "Dude Where's my Rover? Deep Learning for Planetary Rover Exploration"
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[Journal Article] Large-scale Molecular Gas Distribution in the M17 Cloud Complex: Dense Gas Conditions of Massive Star Formation?2020
Author(s)
Nguyen-Luong, Quang; Nakamura, Fumitaka; Sugitani, Koji; Shimoikura, Tomomi; Dobashi, Kazuhito; Kinoshita, Shinichi W.; Kim, Kee-Tae; Kang, Hyunwoo; Sanhueza, Patricio; Evans, Neal J., II; White, Glenn J.
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Journal Title
The Astrophysical Journal
Volume: 891
Pages: 66 - 80
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Effect of Feedback of Massive Stars in the Fragmentation, Distribution, and Kinematics of the Gas in Two Star-forming Regions in the Carina Nebula2020
Author(s)
Rebolledo, David; Guzman, Andres E.; Contreras, Yanett; Garay, Guido; Medina, S. -N. X.; Sanhueza, Patricio; Green, Anne J.; Castro, Camila; Guzman, Viviana; Burton, Michael G.
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Journal Title
The Astrophysical Journal
Volume: 891
Pages: 113 - 138
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] The ALMA Survey of 70 um Dark High-mass Clumps in Early Stages (ASHES). I. Pilot Survey: Clump Fragmentation2019
Author(s)
Sanhueza, Patricio; Contreras, Y.; Wu, Benjamin; Jackson, J. M.; Guzman, A. E.; Zhang, Q.; Li, S.; Lu, X.; Silva, A.; Izumi, N.; Liu, T.; Miura, R. E.; Tatematsu, K.; Sakai, T.; Beuther, H.; Garay, G.; Ohashi, S.; Saito, M.; Nakamura, F.; Saigo, K., Veena, V. S.; Nguyen-Luong, Q.; Tafoya, D.
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Journal Title
The Astrophysical Journal
Volume: 886
Pages: 102 - 130
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Nobeyama 45 m mapping observations toward the nearby molecular clouds Orion A, Aquila Rift, and M17: Project overview2019
Author(s)
Nakamura, Fumitaka; Ishii, Shun; Dobashi, Kazuhito; Shimoikura, Tomomi; Shimajiri, Yoshito; Kawabe, Ryohei; Tanabe, Yoshihiro; Hirose, Asha; Oyamada, Shuri; Urasawa, Yumiko; Takemura, H.; Tsukagoshi, T.; Momose, M.; Sugitani, K.; Nishi, R.; Okumura, S.; Sanhueza, Patricio; Nguyen-Luong, Q.; Kusune, T.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 71
Pages: 1 - 28
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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