939 citations · 4.9k across the 36 of their papers we have counts for
19 papers · 1 filter
Trumpler 20 - an old and rich open cluster
I. Platais, C. Melo, J. P. Fulbright +4
We show that the open cluster Trumpler 20, contrary to the earlier findings, is actually an old Galactic open cluster. New CCD photometry and high-resolution spectroscopy are used…
The Radial Velocity Experiment (RAVE): second data release
T. Zwitter, A. Siebert, U. Munari +51
We present the second data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities (RVs) and stellar atmosphere parameters…
The Evolution of Oxygen and Magnesium in the Bulge and Disk of the Milky Way
A. McWilliam, F. Matteucci, S. Ballero +3
We show that the Galactic bulge and disk share a similar, strong, decline in [O/Mg] ratio with [Mg/H]. The similarity of the [O/Mg] trend in these two, markedly different, populati…
WIYN Open Cluster Study. XXVI. Improved kinematic membership and spectroscopy of IC 2391
I. Platais, C. Melo, J. -C. Mermilliod +5
[Abridged] Contex. Young open clusters provide important clues to the interface between the main sequence and pre-main-sequence phases of stellar evolution. The young and nearby op…
The RAVE Survey: Constraining the Local Galactic Escape Speed
M. C. Smith, G. R. Ruchti, A. Helmi +20
We report new constraints on the local escape speed of our Galaxy. Our analysis is based on a sample of high velocity stars from the RAVE survey and two previously published datase…
The Radial Velocity Experiment (RAVE): first data release
M. Steinmetz, T. Zwitter, A. Siebert +51
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temper…
Manganese Abundances in Cluster and Field Stars
J. S. Sobeck, I. I. Ivans, J. A. Simmerer +4
We have derived Mn abundances for more than 200 stars in 19 globular clusters. In addition, Mn abundance determinations have been made for a comparable number of halo field and dis…
Abundances of Baade's Window Giants from Keck/HIRES Spectra: I. Stellar Parameters and [Fe/H] Values
Jon. P. Fulbright, Andrew McWilliam, R. Michael Rich
We present the first results of a new abundance survey of the Milky Way bulge based on Keck/HIRES spectra of 27 K-giants in the Baade's Window (, ) field. The spectr…
Abundance Ratios in the Galactic Bulge and Super Metal-Rich Type II Nucle osynthesis
Jon P. Fulbright, R. Michael Rich, Andrew McWilliam
We present abundance results from our Keck/HIRES observations of giants in the Galactic Bulge. We confirm that the metallicity distribution of giants in the low-reddening bulge fie…
Draco 119: A Remarkable Heavy Element-deficient Giant
Jon. P. Fulbright, R. Michael Rich, Sandra Castro
We report the abundance analysis of new high S/N spectra of the most metal-poor ([Fe/H] ) star presently known to be a member of a dwarf galaxy, the Draco dSph red giant,…
The Chemical Composition Contrast between M3 and M13 Revisited: New Abundances for 28 Giant Stars in M3
Christopher Sneden, Robert P. Kraft, Puragra Guhathakurta +2
We report new chemical abundances of 23 bright red giants of the globular cluster M3, based on high-resolution spectra obtained with the Keck I telescope. Combining these data with…
Oxygen Abundances in Metal-Poor Stars
Jon P. Fulbright, Jennifer A. Johnson
We present oxygen abundances derived from both the permitted and forbidden oxygen lines for 55 subgiants and giants with [Fe/H] values between -2.7 and solar with the goal of under…
A New Population of Old Stars
I. I. Ivans, C. Sneden, C. R. James +5
We report the results of a coherent study of three chemically anomalous metal-poor ([Fe/H] ~ -2) stars. These objects exhibit unusually low abundances of Mg, Si, Ca (alpha-elements…
Abundances and Kinematics of Field Stars II: Kinematics and Abundance Relationships
Jon P. Fulbright
As an investigation of the origin of ``-poor'' halo stars, we analyze kinematic and abundance data for 73 intermediate metallicity stars ( [Fe/H] ) selected from…
Metal-Poor Globular Clusters of the Milky Way and Environs
James E. Hesser, Jon P. Fulbright
We review properties of the most metal-deficient globular clusters and halo stars in the local universe as of March 2001, with goals of examining present evidence for the duration…
Abundances and Kinematics of Field Halo and Disk Stars I: Observational Data and Abundance Analysis
Jon P. Fulbright
We describe observations and abundance analysis of a high-resolution, high-S/N survey of 168 stars, most of which are metal-poor dwarfs. We follow a self-consistent LTE analysis te…
Getting the Red Out: A Stellar Approach to Determining Spatial Variations of Interstellar Dust
I. I. Ivans, C. Sneden, R. P. Kraft +4
By employing two different spectroscopic techniques we have mapped out the variable ISM dust extinction endemic to globular cluster M4. We derive an average E(B-V) reddening of 0.3…
Oxygen Abundances in Two Metal-Poor Subgiants from the Analysis of the 6300 A Forbidden O I Line
Jon P. Fulbright, Robert P. Kraft
Recent LTE analyses (Israelian et al. 1998 and Bosegaard et al. 1999) of the OH bands in the optical-ultraviolet spectra of nearby metal-poor subdwarfs indicate that oxygen abundan…
An Extremely Lithium-Rich Bright Red Giant in the Globular Cluster M3
Robert P. Kraft, Ruth C. Peterson, Puragra Guhathakurta +3
We have serendipitously discovered an extremely lithium-rich star on the red giant branch of the globular cluster M3 (NGC 5272). An echelle spectrum obtained with the Keck I HIRES…