Rotation Modulations and Distributions of the Flare Occurrence Rates on the Surface of Five UV Ceti Type Stars

Dal Hasan Ali; Evren Serdar

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Rotation Modulations and Distributions of the Flare Occurrence Rates on the Surface of Five UV Ceti Type Stars

机译：五颗紫外Ceti型恒星表面的耀斑发生率的自转调制和分布

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Inthisstudy,weconsideredstellarspots,stellarflares,andalsotherelationbetweenthesetwomagneticproccessesthattakeplaceonUVCetstars.Inaddition,thehypothesisaboutslowflaresdescribedbyGurzadyan(1986Apamp;SS,125,127)wasinvestigated.AllofthesediscussionswerebasedontheresultsofthreeyearsofobservationsofUVCet-typestars:ADLeo,EVLac,V1005Ori,EQPeg,andV1054Oph.Firstofall,theresultsshowthatstellarspotactivityoccursonthestellarsurfaceofEVLac,V1005Ori,andEQPeg,whileADLeodoesnotshowanyshort-termvariabilityandV1054Ophdoesnotexhibitanyvariability.WereportonnewephemeridesforEVLac,V1005Ori,andEQPeg,obtainedfromtime-seriesanalyses.Thephases,computedatintervalsof0.10phaselength,wherethemeanflareoccurenceratestoobtainmaximumamplitude;also,thephasesofrotationalmodulationwerecomparedinordertoinvestigatewhetherthereisanylongitudinalrelationbetweenstellarflaresandspots.Althoughtheresultsshowthatflareeventsarerelatedwithspottedareasonstellarsurfacesduringsomeoftheobservingseasons,wedidnotfindanyclearcorrelationamongthem.Finally,itwastestedwhetherslowflaresarefastflaresoccurringontheoppositesideofthestarsaccordingtothedirectionoftheobservers,asmentionedinahypothesisdevelopedbyGurzadyan(1986).Theflareoccurenceratesrevealthatbothslowandfastflarescanoccurinanyrotationalphases.Theflareoccurenceratesofbothfastandslowflaresvaryinthesamewayalongthelongitudesforallprogramstars.Theseresultsarenotexpectedbasedonthecasementionedinthehypothesis.

机译：Inthisstudy，weconsideredstellarspots，stellarflares，andalsotherelationbetweenthesetwomagneticproccessesthattakeplaceonUVCetstars.Inaddition，thehypothesisaboutslowflaresdescribedbyGurzadyan（1986Apamp; SS，125127）wasinvestigated.AllofthesediscussionswerebasedontheresultsofthreeyearsofobservationsofUVCet-typestars：ADLeo，EVLac，V1005Ori，EQPeg，andV1054Oph.Firstofall，theresultsshowthatstellarspotactivityoccursonthestellarsurfaceofEVLac，V1005Ori，andEQPeg，whileADLeodoesnotshowanyshort-termvariabilityandV1054Ophdoesnotexhibitanyvariability.WereportonnewephemeridesforEVLac，V1005Ori，并按时间序列分析获得EQPeg。以0.10相距的间隔计算相位，其中平均频响出现最大振幅;此外，还应按顺序调查旋转调制的相位，以确保没有发现与星状耀斑之间存在任何纵向相关性，并已证明这两者之间存在着相似的关系。 ngthem.Finally，itwastestedwhetherslowflaresarefastflaresoccurringontheoppositesideofthestarsaccordingtothedirectionoftheobservers，asmentionedinahypothesisdevelopedbyGurzadyan（1986）.Theflareoccurenceratesrevealthatbothslowandfastflarescanoccurinanyrotationalphases.Theflareoccurenceratesofbothfastandslowflaresvaryinthesamewayalongthelongitudesforallprogramstars.Theseresultsarenotexpectedbasedonthecasementionedinthehypothesis。

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《PASJ: Publications of the Astronomical Society of Japan》 |2011年第2期|共页
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Dal Hasan Ali; Evren Serdar;
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2. Rotation Modulations and Distributions of the Flare Occurrence Rates on the Surface of Five UV Ceti Type Stars [J] . Dal Hasan Ali, Evren Serdar PASJ: Publications of the Astronomical Society of Japan . 2011,第2期

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8. Nucleosynthesis of 7Li in Flares on UV Ceti Stars. [R] . Karpen, J. T., Worden, S. P. 1978

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Rotation Modulations and Distributions of the Flare Occurrence Rates on the Surface of Five UV Ceti Type Stars

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