164 citations · 302 across the 16 of their papers we have counts for
8 papers · 1 filter
The Absolute Age of the Open Cluster NGC 6791 and Its Implications for Galactic Archaeology and Asteroseismic Calibration
George Dufresne, Brian Chaboyer, Rayna Rampalli
We present a new absolute age determination for NGC 6791, one of the Milky Way's oldest and most metal-rich open clusters. Its unusual properties make it an important probe of inne…
A Galactic Perspective on the (Unremarkable) Relative Refractory Depletion Observed in the Sun
Rayna Rampalli, James W. Johnson, Melissa K. Ness +5
Over the last two decades, the Sun has been observed to be depleted in refractory elements as a function of elemental condensation temperature (\tcond) relative to of it…
The Sun Remains Relatively Refractory Depleted: Elemental Abundances for 17,412 Gaia RVS Solar Analogs and 50 Planet Hosts
Rayna Rampalli, Melissa K. Ness, Graham H. Edwards +2
The elemental abundances of stars, particularly the refractory elements (e.g., Fe, Si, Mg), play an important role in connecting stars to their planets. Most Sun-like stars do not…
Wrinkles in Time -- I: Rapid Rotators Found in High Eccentricity Orbits
Rayna Rampalli, Amy Smock, Elisabeth R. Newton +2
Recent space-based missions have ushered in a new era of observational astronomy, where high-cadence photometric light curves for thousands to millions of stars in the solar neighb…
TESS Hunt for Young and Maturing Exoplanets (THYME) VII : Membership, rotation, and lithium in the young cluster Group-X and a new young exoplanet
Elisabeth R. Newton, Rayna Rampalli, Adam L. Kraus +36
The public, all-sky surveys Gaia and TESS provide the ability to identify new young associations and determine their ages. These associations enable study of planetary evolution by…
The Factory and the Beehive. IV. A Comprehensive Study of the Rotation X-ray Activity Relation in Praesepe and the Hyades
Alejandro Núñez, Marcel A. Agüeros, Kevin R. Covey +7
X-ray observations of low-mass stars in open clusters are critical to understanding the dependence of magnetic activity on stellar properties and their evolution. Praesepe and the…
Activity and Rotation of Nearby Field M Dwarfs in the TESS Southern Continuous Viewing Zone
Francys Anthony, Alejandro Núñez, Marcel A. Agüeros +8
The evolution of magnetism in late-type dwarfs remains murky, as we can only weakly predict levels of activity for M dwarfs of a given mass and age. We report results from our spec…
Three K2 Campaigns Yield Rotation Periods for 1013 Stars in Praesepe
Rayna Rampalli, Marcel A. Agüeros, Jason L. Curtis +8
We use three campaigns of K2 observations to complete the census of rotation in low-mass members of the benchmark, 670-Myr-old open cluster Praesepe. We measure new rotati…