Further evidence for a sub-year magnetic chromospheric activity cycle and activity phase jumps in the planet host τ Boötis

Further evidence for a sub-year magnetic chromospheric activity cycle and activity phase jumps in the planet host τ Boötis
复制标题

进一步证据表明,主行星Ï Boâtis存在亚年磁色球活动周期和活动相跳跃

DOI:
10.1051/0004-6361/201629429
复制
发表时间:
2017
影响因子:
6.5
通讯作者:
Mittag
Mittag
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Schmitt;J. H. M. M;Mittag

文献摘要

参考文献

被引文献

相似文献

我们检查的S-指数数据,在威尔逊山H & K项目的背景下获得的附近的F-型星星τ Boo,在观测到的S-指数活动水平的时间尺度上可能存在的周期性变化和"相位跳跃"情节,以确定这些功能是否是持久的性质的色球活动的τ Boo和可能的其他晚型恒星。在威尔逊山的H & K项目中,τ Boo在1278个单独的夜晚被观测到,尽管覆盖范围非常不均匀,从每年2到137次观测。我们的分析表明,110 - 120天量级的时间尺度的周期性变化是威尔逊山数据集的一个持续特征。此外,我们还提供了"相位跳跃"事件的进一步例子,当观察到的S指数活动在一到两周的时间尺度上从最大值下降到最小值时,因此这些特征似乎也会或多或少地在τ Boo中发生。
We examine the S-index data, obtained in the context of the Mount Wilson H&K project for the nearby F-type starτBoo, for the presence of possible cyclic variations on timescales below one year and “phase jump” episodes in the observed S-index activity levels, to determine whether such features are persistent properties of the chromospheric activity ofτBoo and possibly other late-type stars. Within the Mount Wilson H&K projectτBoo was observed during 1278 individual nights, albeit with a very inhomogeneous coverage ranging from 2 to 137 observations per year. Our analysis shows that periodical variations with timescales on the order of 110–120 days are a persistent feature of the Mount Wilson data set. Furthermore we provide further examples of “phase jump” episodes, when the observed S-index activity drops from maximum to minimum levels on timescales of one to two weeks, hence such features also appear to occur on a more or less regular basis inτBoo.
DOI: 10.1086/527351
发表时间: 2007-10
期刊: The Astrophysical Journal
影响因子: --
作者:
E. Shkolnik;D. Bohlender;G. Walker;A. Collier Cameron
通讯作者: E. Shkolnik;D. Bohlender;G. Walker;A. Collier Cameron
布蒂斯岛四个月的色球和日冕活动周期
DOI: 10.1051/0004-6361/201629156
发表时间: 2017
影响因子: 6.5
作者:
Mittag;M.Robrade;Schmitt;J. H. M. M;Hempelmann;Gonzalez-Perez;Schröder;K. -P.
通讯作者: K. -P.
τ Bootis 不断演化的磁拓扑
DOI: 10.1093/mnras/stw828
发表时间: 2016
影响因子: 4.8
作者:
M. Mengel;R. Fares;S. Marsden;B. Carter;S. Jeffers;P. Petit;J. Donati;C. Folsom;the Bcool Collaboration
通讯作者: the Bcool Collaboration
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
R. Fares;J. Donati;C. Moutou;D. Bohlender;C. Català;M. Deleuil;E. Shkolnik;A. Cameron;M. Jardine;Gordon A. H. Walker
通讯作者: Gordon A. H. Walker
DOI: 10.1093/mnras/stt1386
发表时间: 2013
影响因子: 4.8
作者:
R. Fares;C. Moutou;J. Donati;C. Català;E. Shkolnik;M. Jardine;A. Cameron;M. Deleuil
通讯作者: M. Deleuil