Nucleosynthesis studies from the chmical abundances of superflare stars
Project/Area Number |
26400231
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Astronomy
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Research Institution | University of Hyogo |
Principal Investigator |
Honda Satoshi 兵庫県立大学, 自然・環境科学研究所, 特任助教 (20425408)
|
Project Period (FY) |
2014-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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Keywords | 恒星フレア / 元素合成 / リチウム / スーパーフレア / 恒星大気 |
Outline of Final Research Achievements |
The purpose of this study is to investigate of the possibility of nucleosynthesis of elements by stellar flares from the chemical abundances of superflare stars. We performed the high-dispersion spectroscopy of 34 solar-type superflare stars with Subaru/HDS and derived the Li abundances of these objects. We confirm the large dispersion in the Li abundance, and the correlation with stellar parameters is not seen. The maximum energy and the number of the superflare also does not show any correlation with the Li abundance. In our observations, we could not find any evidence of Li production by superflares. We could not find a clear difference between supareflare stars and our Sun. These results support the possibility that our Sun could generate supreflares.
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Report
(5 results)
Research Products
(28 results)
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[Journal Article] Spectroscopic observations of active solar-analog stars with high X-ray luminosity, as a proxy of superflare stars2017
Author(s)
Notsu, Y., Honda, S., Maehara, H., Notsu, S., Namekata, K., Nogami, D., and Shibata, K.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 69
Issue: 1
Pages: 12-12
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Starspot activity and superflares on solar-type stars2017
Author(s)
Maehara, H., Notsu, Y., Notsu, S., Namekata, K., Honda, S., Ishii, T., T., Nogami, D., and Shibata, K.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 印刷中
Issue: 3
Pages: 41-41
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Statistical Studies of Solar White-light Flares and Comparisons with Superflares on Solar-type Stars2017
Author(s)
Namekata, K., Sakaue, T., Watanabe, K., Asai, A., Maehara, H., Notsu, Y., Notsu, S., Honda, S., Ishii, T. T., Ikuta, K., Nogami, D., Shibata, K.
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Journal Title
The Astrophysical Journal
Volume: 851
Issue: 2
Pages: 91-91
DOI
Related Report
Peer Reviewed
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[Journal Article] High-dispersion spectroscopy of solar-type superflare stars. I. Temperature, surface gravity, metallicity, and vsin i2015
Author(s)
Notsu, Y., Honda, S.,Maehara, H., Notsu, S., Shibayama, T., Nogami, D., Shibata, K.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: -
Issue: 3
Pages: 32-32
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Presentation] Lithium Abundance of the Solar-Type Superflare Stars2016
Author(s)
Honda, Satoshi; Notsu, Yuta; Maehara, Hiroyuki; Notsu, Shota; Shibayama, Takuya; Nogami, Daisaku; Shibata, Kazunari
Organizer
the 14th International Symposium on Nuclei in the Cosmos
Place of Presentation
Niigata, Japan
Year and Date
2016-06-19
Related Report
Int'l Joint Research
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[Presentation] Lithium Abundance Of The Solar-Type Superflare Stars2016
Author(s)
Honda, Satoshi; Notsu, Yuta; Maehara, Hiroyuki; Notsu, Shota; Shibayama, Takuya; Nogami, Daisaku; Shibata, Kazunari
Organizer
The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
Place of Presentation
Uppsala Sweden
Year and Date
2016-06-06
Related Report
Int'l Joint Research
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[Presentation] High Dispersion Spectroscopy of Solar-Type Superflare Stars With Subaru/HDS2016
Author(s)
Notsu, Yuta; Honda, Satoshi; Maehara, Hiroyuki; Notsu, Shota; Shibayama, Takuya; Namekata, Kosuke; Nogami, Daisaku; Shibata, Kazunari
Organizer
The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
Place of Presentation
Uppsala Sweden
Year and Date
2016-06-06
Related Report
Int'l Joint Research
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[Presentation] Statistical Properties Of Superflares On Solar-Type Stars With Kepler Data2016
Author(s)
Notsu, Yuta; Maehara, Hiroyuki; Shibayama, Takuya; Honda, Satoshi; Notsu, Shota; Namekata, Kosuke; Nogami, Daisaku; Shibata, Kazunari
Organizer
The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
Place of Presentation
Upsala Sweden
Year and Date
2016-06-06
Related Report
Int'l Joint Research
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[Presentation] スーパーフレア星のリチウム組成II2015
Author(s)
本田敏志, 野津湧太, 前原裕之, 野津翔太, 柴山拓也, 野上大作, 柴田一成
Organizer
日本天文学会2015年秋季年会
Place of Presentation
甲南大学(兵庫県神戸市)
Year and Date
2015-09-09
Related Report
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