2017 Fiscal Year Final Research Report
A multiwavelength study on interstellar chemistry in low-metallicity environments
| Project/Area Number |
15K17612
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Astronomy
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 赤外線天文学 / 電波天文学 / 星間化学 (アストロケミストリー) / 星間分子 / 氷 / マゼラン雲 / 系外銀河 / ホットコア |
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| Outline of Final Research Achievements |
This study aims to reveal the chemical diversity of interstellar medium in the universe. In this project, based on astronomical observations with state-of-the-art telescopes, we investigated properties of interstellar molecules in nearby low-metallicity galaxies, which potentially have common environmental characteristics with past galaxies. Particularly, we focused on understanding of interstellar chemistry in various phases of interstellar medium (molecular gas, ices, and dust), with the aid of multiwavelength observations from infrared to radio. As a result, a number of astrochemically important objects, such as protostars deeply embedded in icy dust with organic molecules and protostars surrounded by a cocoon of warm molecular gas (hot molecular core), were detected outside our Galaxy. Detailed analyses have shown that chemical compositions of interstellar molecules in low-metallicity galaxies have different characteristics compared to those in our Galaxy.
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| Free Research Field |
天文学
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