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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 ASAS-SN Catalog of Variable Stars VII: Contact Binaries are Different Above and Below the Kraft Break
T. Jayasinghe, K. Z. Stanek, C. S. Kochanek +11
We characterize W UMa type (EW) contact binaries, including new discoveries, using ASAS-SN -band all-sky light curves along with archival data fr…
The ASAS-SN Catalog of Variable Stars VI: An All-Sky Sample of Scuti Stars
T. Jayasinghe, K. Z. Stanek, C. S. Kochanek +10
We characterize an all-sky catalog of Scuti variables in ASAS-SN, which includes new discoveries. Using distances from \textit{Gaia} DR2, we deriv…
The New EXor Outburst of ESO-H-alpha~99 observed by Gaia ATLAS and TESS
Klaus W. Hodapp, Bo Reipurth, Bertil Pettersson +11
We report photometry and spectroscopy of the outburst of the young stellar object ESO-Halpha 99. The outburst was first noticed in Gaia alert Gaia18dvc and later by ATLAS. We have…
Variable H Emission in the Nebular Spectra of the Low-Luminosity Type Ia SN2018cqj/ATLAS18qtd
Jose L. Prieto, Ping Chen, Subo Dong +6
We present optical photometry and spectroscopy of the Type Ia supernova SN2018cqj/ATLAS18qtd. The supernova exploded in an isolated region at ~kpc from the S0 galaxy IC~55…
WISE J072003.20-084651.2B Is A Massive T Dwarf
Trent J. Dupuy, Michael C. Liu, William M. J. Best +21
We present individual dynamical masses for the nearby M9.5+T5.5 binary WISE J072003.20084651.2AB, a.k.a. Scholz's star. Combining high-precision CFHT/WIRCam photocenter astromet…