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47 papers
Flares Big and Small: a K2 and TESS View of ASAS-SN Superflares
Jesse Zeldes, Jason T. Hinkle, Benjamin J. Shappee +6
We investigate the flare-frequency distributions of 5 M-dwarfs that experienced superflares with energies in excess of erg detected by ASAS-SN. We use K2 and TESS short-c…
Giant white-light flares on fully convective stars occur at high latitudes
Ekaterina Ilin, Katja Poppenhaeger, Sarah J. Schmidt +7
White-light flares are magnetically driven localized brightenings on the surfaces of stars. Their temporal, spectral, and statistical properties present a treasury of physical info…
Calibration of the Halpha Age-Activity relation for M dwarfs
Rocio Kiman, Jacqueline K. Faherty, Kelle L. Cruz +6
In this work, we calibrate the relationship between Halpha emission and M dwarf ages. We compile a sample of 892 M dwarfs with Halpha equivalent width (HaEW) measurements from the…
Flares in Open Clusters with K2. II. Pleiades, Hyades, Praesepe, Ruprecht 147, and M67
Ekaterina Ilin, Sarah J. Schmidt, Katja Poppenhäger +3
Flares, energetic eruptions on the surfaces of stars, are an unmistakable manifestation of magnetically driven emission. Their occurrence rates and energy distributions trace stell…
A Catalog of M-dwarf Flares with ASAS-SN
Romy Rodríguez Martínez, Laura A. Lopez, Benjamin J. Shappee +5
We analyzed the light curves of 1376 early-to-late, nearby M dwarfs to search for white-light flares using photometry from the All-Sky Automated Survey for Supernovae (ASAS-SN). We…
The Ultracool SpeXtroscopic Survey. I. Volume-Limited Spectroscopic Sample and Luminosity Function of M7L5 Ultracool Dwarfs
Daniella C. Bardalez Gagliuffi, Adam J. Burgasser, Sarah J. Schmidt +9
We present a volume-limited, spectroscopically-verified sample of M7L5 ultracool dwarfs within 25\,pc. The sample contains 410 sources, of which have trigonometric distan…