The rotation of low mass stars at 30 Myr in the cluster NGC 3766
Julia Roquette1, Jerome Bouvier2, Estelle Moraux2
1Department of Physics and Astronomy, University of Exeter Physics Building, Stocker Road, Exeter, EX4 4QL, United Kingdom.
Abstract:
Together with the stellar rotation, the spotted surfaces of low-mass magnetically active stars produce modulations in their brightness. These modulations can be resolved by photometric variability surveys, allowing direct measurements of stellar spin rates. In this pro-ceedings, we present results of a multisite photometric survey dedicated to the measurement of spin rates in the 30 Myr cluster NGC 3766. Inside the framework of the Monitor Project, the cluster was monitored during 2014 in the i-band by the Wide Field Imager at the MPG/ESO 2.2-m telescope. Data from Gaia-DR2 and griz Y photometry from DECam/CTIO were used to identify cluster members. We present spin rates measured for ∼200 cluster members.
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