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Rotation in the Pleiades with K2. II. Multiperiod Stars
- Publication Year :
- 2016
- Publisher :
- American Astronomical Society, 2016.
-
Abstract
- We use K2 to continue the exploration of the distribution of rotation periods in Pleiades that we began in Paper I. We have discovered complicated multi-period behavior in Pleiades stars using these K2 data, and we have grouped them into categories, which are the focal part of this paper. About 24% of the sample has multiple, real frequencies in the periodogram, sometimes manifesting as obvious beating in the light curves. Those having complex and/or structured periodogram peaks, unresolved multiple periods, and resolved close multiple periods are likely due to spot/spot group evolution and/or latitudinal differential rotation; these largely compose the slowly rotating sequence in $P$ vs.~$(V-K_{\rm s})_0$ identified in Paper I. The fast sequence in $P$ vs.~$(V-K_{\rm s})_0$ is dominated by single-period stars; these are likely to be rotating as solid bodies. Paper III continues the discussion, speculating about the origin and evolution of the period distribution in the Pleiades.<br />Comment: 28 pages, 15 figures. Accepted by AJ
- Subjects :
- Physics
010308 nuclear & particles physics
NDAS
FOS: Physical sciences
Astronomy and Astrophysics
Astrophysics
Rotation
01 natural sciences
rotation [Stars]
Stars
QC Physics
Astrophysics - Solar and Stellar Astrophysics
Space and Planetary Science
0103 physical sciences
QB Astronomy
Differential rotation
Periodogram
clusters: individual (Pleiades) [Galaxies]
Pleiades
010303 astronomy & astrophysics
Solar and Stellar Astrophysics (astro-ph.SR)
QC
QB
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....39cd04bc026b79ab2a8a72a9734c37ed