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A large catalog of young active RAVE stars in the Solar neighborhood

Published online by Cambridge University Press:  12 September 2017

Maruša Žerjal Open the ORCID record for Maruša Žerjal [Opens in a new window] ,
Tomaž Zwitter ,
Gal Matijevič  and
RAVE Collaboration
Maruša Žerjal
Affiliation:
Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia email: marusa.zerjal@fmf.uni-lj.si
Tomaž Zwitter
Affiliation:
Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia email: marusa.zerjal@fmf.uni-lj.si
Gal Matijevič
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482, Potsdam, Germany
RAVE Collaboration
Affiliation:
https://www.rave-survey.org/
Rights & Permissions [Opens in a new window]

Abstract

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The catalog of 38,000 chromospherically active RAVE dwarfs represents one of the largest samples of young active solar-like and later-type single field stars in the Solar neighbourhood. It was established from the unbiased magnitude limited RAVE Survey using an unsupervised stellar classification algorithm based merely on stellar fluxes (Ca II infrared triplet). Using a newly-calibrated age-activity relation, ~15,000 active stars are estimated to be younger than 1 Gyr. Almost 2000 stars are presumably younger than ~100 Myr and possibly still in the pre-main sequence phase, the latter being supported by their significant offset from the main sequence in the NUV − V versus J − K space. 16,000 stars from the sample have positional and velocity vectors available (using TGAS parallaxes and proper motions and radial velocities from RAVE).

Keywords

stars: activitychromospheresemission-lineBepre–main-sequencecatalogs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S328: Living Around Active Stars , October 2016 , pp. 143 - 145
Copyright
Copyright © International Astronomical Union 2017 

References

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Žerjal, M., Zwitter, T., Matijevič, G., et al. 2016, ApJ, accepted.Google Scholar