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Pushing Automated Abundance Derivations Into the Cool Star Regime: A Test Using Three G and Two K Stars in Praesepe
Marwan Gebran, Marcel A. Agüeros, Keith Hawkins +2
We present the results of an abundance analysis of three G and two K dwarfs in the Praesepe open cluster based on high-resolution, moderate signal-to-noise-ratio spectra obtained w…
Using APOGEE Wide Binaries to Test Chemical Tagging with Dwarf Stars
Jeff J. Andrews, Borja Anguiano, Julio Chanamé +4
Stars of a common origin are thought to have similar, if not nearly identical, chemistry. Chemical tagging seeks to exploit this fact to identify Milky Way subpopulations through t…
Are Starspots and Plages Co-Located on Active G and K Stars?
Brett M. Morris, Jason L. Curtis, Stephanie T. Douglas +4
We explore the connection between starspots and plages of three main-sequence stars by studying the chromospheric and photospheric activity over several rotation periods. We presen…
Zodiacal Exoplanets in Time (ZEIT) VIII: A Two Planet System in Praesepe from K2 Campaign 16
Aaron C. Rizzuto, Andrew Vanderburg, Andrew W. Mann +5
Young planets offer a direct view of the formation and evolution processes that produced the diverse population of mature exoplanet systems known today. The repurposed Kepler missi…
Validating TGAS wide binaries with Gaia DR2 Radial Velocities and Parallaxes
Jeff J. Andrews, Julio Chanamé, Marcel A. Agüeros
Featuring greatly improved astrometry and precise radial velocities (RVs), the second data release (DR2) from Gaia affords us a unique opportunity to test the validity of samples o…