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The rotation of low mass stars at 30 Myr in the cluster NGC 3766

Published online by Cambridge University Press:  24 September 2020

Julia Roquette Open the ORCID record for Julia Roquette [Opens in a new window] ,
Jerome Bouvier ,
Estelle Moraux ,
Herve Bouy ,
Jonathan Irwin ,
Suzanne Aigrain  and
Régis Lachaume
Julia Roquette
Affiliation:
Department of Physics and Astronomy, University of Exeter, Physics Building, Stocker Road, Exeter, EX4 4QL, United Kingdom email: jt574@exeter.ac.uk
Jerome Bouvier
Affiliation:
Univ. Grenoble Alpes, CNRS IPAG, F-38000 Grenoble, France
Estelle Moraux
Affiliation:
Univ. Grenoble Alpes, CNRS IPAG, F-38000 Grenoble, France
Herve Bouy
Affiliation:
Laboratoire d’astrophysique de Bordeaux, Univ. Bordeaux, CNRS, B18N, allée Geoffroy Saint-Hilaire, 33615 Pessac, France.
Jonathan Irwin
Affiliation:
Smithsonian Astrophysical Observatory 60 Garden Street Cambridge, MA 02138 USA
Suzanne Aigrain
Affiliation:
Department of Physics, University of Oxford, Keble Road, OX3 1RH, UK
Régis Lachaume
Affiliation:
Instituto de Astronoma, Facultad de Fsica, PUC-Chile, casilla 306, Santiago 22, Chile Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
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Abstract

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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 proceedings, 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 grizY photometry from DECam/CTIO were used to identify cluster members. We present spin rates measured for ⁓200 cluster members.

Keywords

stars: low-massbrown dwarfsstars: pre–main-sequencestars: rotationstars: spots
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S354: Solar and Stellar Magnetic Fields: Origins and Manifestations , June 2019 , pp. 200 - 203
Copyright
© International Astronomical Union 2020

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