M Dwarf Activity in the Pan-STARRS 1 Medium-Deep Survey: First Catalog and Rotation Periods
Erin Kado-Fong, Peter K.G. Williams, Andrew W. Mann, Edo Berger,, William S. Burgett, Kenneth C. Chambers, Mark E. Huber, Nicholas Kaiser,, Rolf-Peter Kudritzki, Eugene A. Magnier, Richard J. Wainscoat, Christopher, Waters

TL;DR
This paper presents a catalog of rotation periods and stellar parameters for M dwarfs observed in the Pan-STARRS 1 Medium Deep Survey, revealing insights into stellar activity, rotation, and magnetic evolution.
Contribution
It introduces a new catalog of 271 rotating M dwarfs with derived stellar parameters and rotation periods, utilizing a custom pipeline and multi-band periodogram analysis.
Findings
Detection of rotation periods from less than 1 to 130 days.
Evidence that Kepler surveys miss very slow rotators (P > 70 days).
Observation of low-amplitude variability suggesting magnetic complexity loss.
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…
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