NAOC Open IR
The Flare Catalog and the Flare Activity in the Kepler Mission
Yang, Huiqin1; Liu, Jifeng1,2,3
2019-04-01
Source PublicationASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
ISSN0067-0049
Volume241Issue:2Pages:19
AbstractWe present a flare catalog of the Kepler mission using the long-cadence data of Data Release 25. This catalog comprises 3420 flare stars and 162,262 flare events. A comparison shows that the flare catalogs of previous studies are seriously polluted by various false-positive signals and artifacts. The incidence of flare stars rises with decreasing temperature, which accords with the theoretical analysis. The flare frequency distributions (FFDs) from F-type stars to M-type stars obey a power-law relation with alpha similar to 2, indicating that they have the same mechanism on generating flares. The remarkable incidence and the deviation of FFDs on A-type flare stars imply that they generate flares in a different way. The activity-rotation relation is consistent with previous studies at low temperature bands, whereas it becomes dispersive with increasing temperature. Combined with the Gyrochronology, we find that the mixing of stars of two different dynamos gives rise to the dispersion. We thereby propose a scenario on understanding the activity-rotation relation across the Hertzsprung-Russell diagram. Based on the scenario and the correspondence of dynamo with regard to activity and rotation, we suggest a new expression on the activity-rotation relation, in which the segmentation is on the basis of the dynamo rather than the rotation period. The rotation distribution of flare stars shows that about 70% of flare stars rotate faster than 10 days and the rate approaches 95% at 30 days. Based on the incidence and the rotation distribution of flare stars, we estimate that a superflare with energy similar to 10(34) erg occurs on the Sun at least once in 5500 yr.
Keywordstars: activity stars: evolution stars: flare stars: rotation stars: statistics
Funding OrganizationNational Science Foundation of China ; NASA Science Mission Directorate ; NASA ; NASA Office of Space Science ; National Science Foundation of China ; NASA Science Mission Directorate ; NASA ; NASA Office of Space Science ; National Science Foundation of China ; NASA Science Mission Directorate ; NASA ; NASA Office of Space Science ; National Science Foundation of China ; NASA Science Mission Directorate ; NASA ; NASA Office of Space Science
DOI10.3847/1538-4365/ab0d28
WOS KeywordX-RAY-EMISSION ; LOWER MAIN-SEQUENCE ; DIGITAL SKY SURVEY ; SOLAR-TYPE ; MAGNETIC ACTIVITY ; COOL STARS ; CHROMOSPHERIC ACTIVITY ; STELLAR ACTIVITY ; M DWARFS ; ROTATION
Language英语
Funding ProjectNational Science Foundation of China[11425313] ; NASA Science Mission Directorate ; NASA[NAS5-26555] ; NASA Office of Space Science[NNX09AF08G]
Funding OrganizationNational Science Foundation of China ; NASA Science Mission Directorate ; NASA ; NASA Office of Space Science ; National Science Foundation of China ; NASA Science Mission Directorate ; NASA ; NASA Office of Space Science ; National Science Foundation of China ; NASA Science Mission Directorate ; NASA ; NASA Office of Space Science ; National Science Foundation of China ; NASA Science Mission Directorate ; NASA ; NASA Office of Space Science
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000516533200002
PublisherIOP PUBLISHING LTD
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/28826
Collection中国科学院国家天文台
Corresponding AuthorYang, Huiqin
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 000, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Wuhan Univ, WHU NAOC Joint Ctr Astron, Wuhan 40072, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Yang, Huiqin,Liu, Jifeng. The Flare Catalog and the Flare Activity in the Kepler Mission[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2019,241(2):19.
APA Yang, Huiqin,&Liu, Jifeng.(2019).The Flare Catalog and the Flare Activity in the Kepler Mission.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,241(2),19.
MLA Yang, Huiqin,et al."The Flare Catalog and the Flare Activity in the Kepler Mission".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 241.2(2019):19.
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