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Pulsating Variable Stars in the MACHO Bulge database: The Semiregular Variables
D. Minniti, C. Alcock, R. A. Allsman +17
We review the pulsating stars contained in the top 24 fields of the MACHO bulge database, with special emphasis on the red semiregular stars. Based on period, amplitude and color c…
Detection of Lithium in a Main Sequence Bulge Star Using Keck I as a 15m Diameter Telescope
D. Minniti, T. Vandehei, K. H. Cook +2
The bulge contains the most chemically evolved old stellar population in the Milky Way. Thanks to microlensing, it is now possible to obtain high resolution echelle spectra of bulg…
Radial Velocities of Globular Clusters in the Giant Elliptical Galaxy NGC 1399
Dante Minniti, Markus Kissler-Patig, Paul Goudfrooij +1
We report on the radial velocity measurements of 18 globular clusters and one dE galaxy in the field of the giant elliptical galaxy NGC 1399, the dominant galaxy of the Fornax clus…
The MACHO Project LMC Variable Star Inventory: The Discovery of RV Tauri stars and New Type II Cepheids in the LMC
The MACHO Collaboration, C. Alcock, R. A. Allsman +19
We report the discovery of RV Tauri stars in the Large Magellanic Cloud. In light and colour curve behaviour, the RV Tauri stars appear to be a direct extension of the type II Ceph…
The MACHO Project: Microlensing and Variable Stars
The MACHO Collaboration, K. H. Cook, C. Alcock +18
The MACHO Project monitors millions of stars in the Large Magellanic Cloud, the Small Magellanic Cloud and the bulge of the Milky Way searching for the gravitational microlensing s…
First detection of a gravitational microlensing candidate towards the Small Magellanic Cloud
The MACHO Collaboration, C. Alcock, R. A. Allsman +20
We report the first discovery of a gravitational microlensing candidate towards a new population of source stars, the Small Magellanic Cloud (SMC). The candidate event's light curv…