M Dwarf Activity in the Pan-Starrs1 Medium-Deep Survey: First Catalog and Rotation Periods
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Author
Kado-Fong, E.
Mann, A.W.
Burgett, W.S.
Chambers, K.C.
Huber, M.E.
Kaiser, N.
Kudritzki, R.P.
Magnier, E.A.
Rest, A.
Wainscoat, R.J.
Waters, C.
Published Version
https://doi.org/10.3847/1538-4357/833/2/281Metadata
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Kado-Fong, E., P. K. G. Williams, A. W. Mann, E. Berger, W. S. Burgett, K. C. Chambers, M. E. Huber, et al. 2016. “M Dwarf Activity in the Pan-Starrs 1 Medium-Deep Survey: First Catalog and Rotation Periods.” The Astrophysical Journal 833 (2) (December 21): 281. doi:10.3847/1538-4357/833/2/281. http://dx.doi.org/10.3847/1538-4357/833/2/281.Abstract
We report on an ongoing project to investigate activity in the M dwarf stellar population observed by the Pan-STARRS 1 Medium Deep Survey (PS1-MDS). Using a custom-built pipeline, we refine an initial sample of ∼4 million sources in PS1-MDS to a sample of 184,148 candidate cool stars using color cuts. Motivated by the well-known relationship between rotation and stellar activity, we use a multi-band periodogram analysis and visual vetting to identify 271 sources that are likely rotating M dwarfs. We derive a new set of polynomials relating M dwarf PS1 colors to fundamental stellar parameters and use them to estimate the masses, distances, effective temperatures, and bolometric luminosities of our sample. We present a catalog containing these values, our measured rotation periods, and cross-matches to other surveys. Our final sample spans periods of .1–130 days in stars with estimated effective temperatures of ∼2700–4000 K. Twenty-two of our sources have X-ray crossmatches, and they are found to be relatively X-ray bright as would be expected from selection effects. Our data set provides evidence that Kepler -based searches have not been sensitive to very slowlyrotating stars (Prot & 70 d), implying that the observed emergence of very slow rotators in studies of low-mass stars may be a systematic effect. We also see a lack of low-amplitude (<2%) variability in objects with intermediate (10–40 d) rotation periods, which, considered in conjunction with other observational results, may be a signpost of a loss of magnetic complexity associated with a phase of rapid spin-down in intermediate-age M dwarfs. This work represents just a first step in exploring stellar variability in data from the PS1-MDS and, in the farther future, LSST.Other Sources
https://arxiv.org/pdf/1608.00978.pdfCitable link to this page
https://nrs.harvard.edu/URN-3:HUL.INSTREPOS:37374113
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