497 citations · 2k across the 27 of their papers we have counts for
25 papers
Spectroscopic Confirmation: Fast rotators in the young clusters NGC 1856 and NGC 1953
Paul I. Cristofari, Andrea K. Dupree, Antonino P. Milone +2
We present the results of a spectroscopic investigation of two Large Magellanic Cloud globular clusters, NGC 1953 and NGC 1856. Both clusters have similar ages (250 and 300 Myr, re…
Rotation and H emission in a young SMC cluster: a spectroscopic view of NGC 330
Paul I. Cristofari, Andrea K. Dupree, Antonino P. Milone +4
We present an analysis of high-resolution optical spectra recorded for 30 stars of the split extended main-sequence turnoff (eMSTO) of the young ( 40 Myr) Small Magellanic Cl…
Different stellar rotation in the two main sequences of the young globular cluster NGC1818: first direct spectroscopic evidence
A. F. Marino, N. Przybilla, A. P. Milone +4
We present a spectroscopic analysis of main sequence (MS) stars in the young globular cluster NGC1818 (age~40 Myrs) in the Large Magellanic Cloud. Our photometric survey on Magella…
The 10830 Angstrom Helium Line Among Evolved Stars in the Globular Cluster M4
Jay Strader, A. K. Dupree, Graeme H. Smith
Helium is a pivotal element in understanding multiple main sequences and extended horizontal branches observed in some globular clusters. Here we present a spectroscopic study of h…
HST FUV monitoring of TW Hya
H. M. Günther, N. S. Brickhouse, A. K. Dupree +3
Classical T Tauri stars (CTTS) are young (< 10 Myr), cool stars that actively accrete matter from a disk. They show strong, broad and asymmetric, atomic FUV emission lines. Neither…
Masses, Radii, and Orbits of Small Kepler Planets: The Transition from Gaseous to Rocky Planets
Geoffrey W. Marcy, Howard Isaacson, Andrew W. Howard +100
We report on the masses, sizes, and orbits of the planets orbiting 22 Kepler stars. There are 49 planet candidates around these stars, including 42 detected through transits and 7…