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The Pan-STARRS1 Surveys
Pan-STARRS1 has carried out a set of distinct synoptic imaging sky surveys including the $3\pi$ Steradian Survey and the Medium Deep Survey in 5 bands ($grizy_{P1}$). The mean 5$\sigma$ point sourceExpand
The evolution of the lithium abundances of solar-type stars. III - The Pleiades
New measurements of lithium in more than 100 Pleiades F, G, and K dwarfs are reported. Abundances are determined from spectrum synthesis fits to the data as well as from use of new covers of growthExpand
The Problem of Hipparcos Distances to Open Clusters. I. Constraints from Multicolor Main-Sequence Fitting*
Parallax data from the Hipparcos mission allow the direct distance to open clusters to be compared with the distance inferred from main-sequence (MS) fitting. There are surprising differences betweenExpand
Rotation and chromospheric emission among F, G, and K dwarfs of the Pleiades
We report and discuss high-resolution echelle spectra of more than 100 F, G, and K dwarfs in the Pleiades. Comparisons of the profiles of Hα and the Ca II infrared triplet to chromosphericallyExpand
CONFIRMATION OF ERRORS IN HIPPARCOS PARALLAXES FROM HUBBLE SPACE TELESCOPE FINE GUIDANCE SENSOR ASTROMETRY OF THE PLEIADES
We present absolute trigonometric parallaxes and relative proper motions for three members of the Pleiades, obtained with the Hubble Space Telescope's Fine Guidance Sensor 1r, a white-lightExpand
The Ages of Stars
The age of an individual star cannot be measured, only estimated through mostly model-dependent or empirical methods, and no single method works well for a broad range of stellar types or for a fullExpand
THE METALLICITY OF THE PLEIADES
We have measured the abundances of Fe, Si, Ni, Ti, and Na in 20 Pleiades stars with T_(eff) values near solar and with low v sin i using high-resolution, high signal-to-noise echelle spectra. We haveExpand
HST photometry of the trapezium cluster
We have obtained images of 11 fields in the Trapezium cluster with the Planetary Camera (PC) of the Hubble Space Telescope (HST) in order to extend Herbig & Terndrup's (1986) study of this prototype,Expand
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