4 papers · 1 filter
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…
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…
Bulge delta Scuti Stars in the MACHO Database
The MACHO Collaboration, C. Alcock, R. A. Allsman +20
We describe the search for delta Scuti stars in the MACHO database of bulge fields. Concentrating on a sample of high amplitude delta Scutis, we examine the light curves and pulsat…
The RR Lyrae Population of the Galactic Bulge from the MACHO Database
The MACHO Collaboration, C. Alcock, R. A. Allsman +21
Mean colors and magnitudes of RR Lyrae stars in 24 fields towards the Galactic bulge from the MACHO database are presented. Accurate mean reddenings are computed for these fields o…