19 citations · 19 across the 1 of their papers we have counts for
5 papers
The effects of rotation on the lithium depletion of G- and K-dwarfs in Messier 35
R. D. Jeffries, R. J. Jackson, Qinghui Sun +1
New fibre spectroscopy and radial velocities from the WIYN telescope are used to measure photospheric lithium in 242 high-probability, zero-age-main-sequence (ZAMS) F- to K-type me…
WIYN Open Cluster Study LXXIX. M48 (NGC 2548) I. Radial Velocities, Rotational Velocities, and Metallicities of Stars in the Open Cluster M48 (NGC 2548)
Qinghui Sun, Constantine P. Deliyannis, Aaron Steinhauer +2
WIYN/Hydra spectra (R 13,500, signal-to-noise pixel = 50-1000) of a 400 $\unicode{x212B}$ region around Li 6708 $\unicode{x212B}$ are used to determine radial and rot…
WIYN Open Cluster Study LXXX: HDI CCD Photometry of the Old Open Cluster NGC 7142 and Comparison to M67
Qinghui Sun, Constantine P. Deliyannis, Bruce A. Twarog +2
We present photometry of 8702 stars in a field in the direction of NGC 7142, taken with the Half Degree Imager (HDI) at the WIYN 0.9-meter tele…
A search for radius inflation among active M-dwarfs in Praesepe
R. J. Jackson, R. D. Jeffries, Constantine P. Deliyannis +2
Rotation periods from Kepler K2 are combined with projected rotation velocities from the WIYN 3.5-m telescope, to determine projected radii for fast-rotating, low-mass ($0.15 \leq…
Li in Open Clusters: Cool Dwarfs in the Young, Subsolar Metallicity Cluster M35 (NGC 2168)
B. J. Anthony-Twarog, C. P. Deliyannis, D. Harmer +4
Hydra spectra of 85 G-K dwarfs in the young cluster, M35, near the Li 6708 Angstrom line region are analyzed. From velocities and Gaia astrometry, 78 are likely single-star members…