Rotation in the Pleiades with K2. II. Multiperiod stars

Rebull, L. M. and Stauffer, J. R. and Bouvier, J. and Cody, A. M. and Hillenbrand, L. A. and Soderblom, D. R. and Valenti, J. and Barrado, D. and Bouy, H. and Ciardi, D. and Pinsonneault, M. and Stassun, K. and Micela, G. and Aigrain, S. and Vrba, F. and Somers, G. and Gillen, E. and Collier Cameron, A. (2016) Rotation in the Pleiades with K2. II. Multiperiod stars. The Astronomical Journal, 152 (5). pp. 114-133. ISSN 00046256

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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 multiperiod 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 LCs. 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 versus (V - K s)0 identified in Paper I. The fast sequence in P versus (V - K 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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Access to published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: No Faculty
Date Deposited: 12 Jun 2017 01:54
Last Modified: 30 Oct 2017 01:21
Uncontrolled Keywords: galaxies: clusters: Pleiades; stars: rotation;
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: 10.3847/0004-6256/152/5/114
URI: http://eprints.usq.edu.au/id/eprint/32189

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