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9 papers · 2 filters
Testing the radius scaling relation with DR2 in the field
Joel C. Zinn, Marc H. Pinsonneault, Daniel Huber +3
We compare radii based on parallaxes to asteroseismic scaling relation-based radii of dwarfs subgiants and first-ascent giants from the ${\…
MOBSTER -- III. HD 62658: a magnetic Bp star in an eclipsing binary with a non-magnetic 'identical twin'
M. E. Shultz, C. Johnston, J. Labadie-Bartz +9
HD 62658 (B9p V) is a little-studied chemically peculiar star. Light curves obtained by the Kilodegree Extremely Little Telescope (KELT) and Transiting Exoplanet Survey Satellite (…
Planetary Nebulae and How to Find Them: Color Identification in Big Broadband Surveys
George Vejar, Rodolfo Montez, Margaret Morris +1
Planetary nebulae (PNe) provide tests of stellar evolution, can serve as tracers of chemical evolution in the Milky Way and other galaxies, and are also used as a calibrator of the…
Complex Rotational Modulation of Rapidly Rotating M-Stars Observed with TESS
Z. Zhan, M. N. Günther, S. Rappaport +23
We have searched for short periodicities in the light curves of stars with cooler than 4000 K made from 2-minute cadence data obtained in TESS sectors 1 and 2. Herein…
Close companions around young stars
Marina Kounkel, Kevin Covey, Maxwell Moe +26
Multiplicity is a fundamental property that is set early during stellar lifetimes, and it is a stringent probe of the physics of star formation. The distribution of close companion…
Astro2020 Science White Paper: Fundamental Physics with Brown Dwarfs: The Mass-Radius Relation
Adam Burgasser, Isabelle Baraffe, Matthew Browning +17
The lowest-mass stars, brown dwarfs and giant exoplanets span a minimum in the mass-radius relationship that probes the fundamental physics of extreme states of matter, magnetism,…