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Stellar Properties of Active G and K Stars: Exploring the Connection Between Starspots and Chromospheric Activity
Brett M. Morris, Jason L. Curtis, Charli Sakari +2
We gathered high resolution spectra for an ensemble of 55 bright active and inactive stars using the ARC 3.5 m Telescope Echelle Spectrograph at Apache Point Observatory ($R\approx…
Constraining Stellar Photospheres as an Essential Step for Transmission Spectroscopy of Small Exoplanets
Benjamin V. Rackham, Arazi Pinhas, Dániel Apai +29
Transmission spectra probe the atmospheres of transiting exoplanets, but these observations are also subject to signals introduced by magnetic active regions on host stars. Here we…
The Solar Benchmark: Rotational Modulation of the Sun Reconstructed from Archival Sunspot Records
Brett M. Morris, James R. A. Davenport, Helen A. C. Giles +5
We use archival daily spot coverage measurements from Howard et al. (1984) to study the rotational modulation of the Sun as though it were a distant star. A quasi-periodic Gaussian…