2017 Fiscal Year Final Research Report
The formation and evolution of nearby galaxies studied with Hyper Suprime-Cam on the Subaru Telescope
| Project/Area Number |
15K05037
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 画像処理 / 近傍銀河 |
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| Outline of Final Research Achievements |
The data analysis procedure which is optimized for the studies of nearby galaxies using Hyper Suprime-Cam on the Subaru Telescope is investigated. The key points in the data analysis which are specific to the analysis of nearby galaxies include (1) the subtraction of background light, (2) stellar photometry in crowded fields, and (3) the reduction of ghosts in the image due to reflections of telescope optics. Based on the optimized data analysis procedure, the formation and evolution of nearby galaxies is studied in detail from new points of view: that are the detailed study of stellar stream in the halo of Andromeda galaxy and the estimate of binary fraction in Ursa Minor dwarf spheroidal galaxy.
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| Free Research Field |
銀河天文学
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