Elucidation of whole picture of an interstellar gas near solar system
Project/Area Number |
25287035
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Astronomy
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Research Institution | Nagoya University |
Principal Investigator |
YAMAMOTO HIROAKI 名古屋大学, 理学(系)研究科(研究院), 助教 (70444396)
|
Co-Investigator(Kenkyū-buntansha) |
FUKUI YASUO 名古屋大学, 大学院理学研究科, 教授 (30135298)
KUWAHARA TOSHIHISA 名古屋大学, 大学院理学研究科, 研究員 (80648303)
SANO HIDETOSHI 名古屋大学, 大学院理学研究科, 特任助教 (50739472)
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2015: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2014: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2013: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
|
Keywords | 分子雲 / 太陽系近傍 / ダークガス / プランク |
Outline of Final Research Achievements |
The comparative study among the optical depth and temperature of interstellar grain, and intensity of atomic hydrogen (HI) and carbon monoxide has been carried out toward the region at high galactic latitude (near solar system). It is found that an optically thick HI gas is more abundant than the gas previously thought and is extended around molecular clouds. The optical depth and spin temperature of 1-2 and ~30 K is dominant. Dark gas which is considered not to be able to trace by atomic or molecular line emission directory can be explained by the optically thick HI gas.
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Report
(4 results)
Research Products
(46 results)
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[Journal Article] The Two Molecular Clouds in RCW 38: Evidence for the Formation of the Youngest Super Star Cluster in the Milky Way Triggered by Cloud-Cloud Collision2016
Author(s)
Fukui, Y.; Torii, K.; Ohama, A.; Hasegawa, K.; Hattori, Y.; Sano, H.; Ohashi, S.; Fujii, K.; Kuwahara, S.; Mizuno, N.; Dawson, J. R.; Yamamoto, H.; Tachihara, K.; Okuda, T.; Onishi, T.; Mizuno, A.
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Journal Title
The Astrophysical Journal
Volume: 820
Issue: 1
Pages: 26-42
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Optically thick HI dominant in the local interstellar medium; an alternative interpretation to "dark gas"2015
Author(s)
Fukui, Y., Torii, K., Onishi, T., Yamamoto, H., Okamoto, R., Hayakawa, T., Tachihara, K., Dickey, J. M., Sano, H.
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Journal Title
The Astrophysical Journal
Volume: 798
Issue: 1
Pages: 18-18
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] H I, CO, and Planck/IRAS Dust Properties in the High Latitude Cloud Complex, MBM 53, 54, 55 and HLCG 92 - 35. Possible Evidence for an Optically Thick H I Envelope around the CO Clouds2014
Author(s)
Fukui, Y., Okamoto, R., Kaji, R., Yamamoto, H., Torii, K., Hayakawa, T., Tachihara, K., Dickey, J. M., Okuda, T., Ohama, A., Kuroda, Y., Kuwahara, T.
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Journal Title
The Astrophysical Journal
Volume: 796
Issue: 1
Pages: 59-59
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] Keynote speech2015
Author(s)
Fukui, Y.
Organizer
Nagoya Workshop on the Interstellar Hydrogen
Place of Presentation
Nadya Park, Nagoya, Japan
Year and Date
2015-03-26 – 2015-03-28
Related Report
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