Rotation in the Pleiades with K2. I. Data and first results

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 Christiansen, J. and Gillen, E. and Collier Cameron, A. (2016) Rotation in the Pleiades with K2. I. Data and first results. The Astronomical Journal, 152 (5). pp. 113-131. ISSN 0004-6256

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Abstract

Young (125 Myr), populous (>1000 members), and relatively nearby, the Pleiades has provided an anchor for stellar angular momentum models for both younger and older stars. We used K2 to explore the distribution of rotation periods in the Pleiades. With more than 500 new periods for Pleiades members, we are vastly expanding the number of Pleiades with periods, particularly at the low-mass end. About 92% of the members in our sample have at least one measured spot-modulated rotation period. For the ∼8% of the members without periods, non-astrophysical effects often dominate (saturation, etc.), such that periodic signals might have been detectable, all other things being equal. We now have an unusually complete view of the rotation distribution in the Pleiades. The relationship between P and follows the overall trends found in other Pleiades studies. There is a slowly rotating sequence for 1.1 ≲ ≲ 3.7 and a primarily rapidly rotating population for 5.0. There is a region in which there seems to be a disorganized relationship between P and for 3.7 ≲ ≲ 5.0. Paper II continues the discussion, focusing on multiperiod structures, and Paper III speculates 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 08:04
Last Modified: 30 Oct 2017 01:20
Uncontrolled Keywords: globular clusters; stars, Pleiades; 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: 10.3847/0004-6256/152/5/113
URI: http://eprints.usq.edu.au/id/eprint/32086

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