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RR Lyrae Stars in the MACHO Database
The MACHO Collaboration, D. Minniti, C. Alcock +18
The MACHO Project has catalogued RR Lyrae stars in the Large Magellanic Cloud, in the Galactic bulge, and 50 in the Sgr dwarf galaxy. These variables…
BVRI Light Curves for 29 Type Ia Supernovae
Mario Hamuy, M. M. Phillips, Nicholas B. Suntzeff +2
BVRI light curves are presented for 27 Type Ia supernovae discovered during the course of the Calan/Tololo Survey and for two other SNe Ia observed during the same period. Estimate…
Beat Cepheid Period Ratios from OPAL Opacities
S. M. Morgan, D. L. Welch
The discovery of a large number of beat Cepheids in the Large Magellanic Cloud in the MACHO survey, provides an opportunity to compare the characteristics of such Cepheids over a r…
The MACHO Project 2nd Year LMC Microlensing Results and Dark Matter Implications
M. R. Pratt, C. Alcock, R. A. Allsman +16
The MACHO Project is searching for galactic dark matter in the form of massive compact halo objects (Machos). Millions of stars in the Large Magellanic Cloud (LMC), Small Magellani…
MACHO Project Photometry of RR Lyrae Stars in the Sgr Dwarf Galaxy
C. Alcock, R. A. Allsman, D. R. Alves +17
We report the discovery of 30 type a,b RR Lyrae (RRab) which are likely members of the Sagittarius (Sgr) dwarf galaxy. Accurate positions, periods, amplitudes and magnitudes are pr…