Rotation of solar analogs cross-matching Kepler and Gaia DR2
Abstract
A major obstacle to interpreting the rotation period distribution for main-sequence stars from Kepler mission data has been the lack of precise evolutionary status for these objects. We address this by investigating the evolutionary status based on Gaia Data Release 2 parallaxes and photometry for more than 30,000 Kepler stars with rotation period measurements. Many of these are subgiants, and should be excluded in future work on dwarfs. We particularly investigate a 193-star sample of solar analogs, and report newly-determined rotation periods for 125 of these. These include 54 stars from a prior sample, of which can confirm the periods for 50. The remainder are new, and 10 of them longer than solar rotation period, suggesting that sun-like stars continue to spin down on the main sequence past solar age. Our sample of solar analogs could potentially serve as a benchmark for future missions such as PLATO, and emphasizes the need for additional astrometric, photometric, and spectroscopic information before interpreting the stellar populations and results from time-series surveys.
Cite
@article{arxiv.2006.06204,
title = {Rotation of solar analogs cross-matching Kepler and Gaia DR2},
author = {Jose-Dias do Nascimento and Leandro de Almeida and Eduardo Nunes Velloso and Francys Anthony and Sydney A Barnes and Steven H Saar and Soren Meibom and Jefferson Soares da Costa and Matthieu Castro and Jhon Yana Galarza and Diego Lorenzo-Oliveira and Paul G. Beck and Jorge Melendez},
journal= {arXiv preprint arXiv:2006.06204},
year = {2020}
}
Comments
10 pages, 8 Figures, 2 tables. accepted to be published on The Astrophysical Journal (June 8, 2020)