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The Distance to IC 10 from Near-Infrared Observations of Cepheids
C. D. Wilson, D. L. Welch, I. N. Reid +2
We have measured the distance to the Local Group dwarf irregular galaxy IC 10 from near-infrared observations of Cepheids. The reddening-corrected distance modulus is $24.57\…
The MACHO Data Pipeline
T. S. Axelrod, R. A. Allsman, P. J. Quinn +11
The MACHO experiment is searching for dark matter in the halo of the Galaxy by monitoring more than 20 million stars in the LMC and Galactic bulge for gravitational microlensing ev…
Macho Proper Motions From Optical/Infrared Photometry
Andrew Gould, Douglas L. Welch
Optical/infrared photometry can double the number of proper motion measurements of Massive Compact Objects (MACHOs) relative to single band photometry. The proper motion of a MACHO…
DYNAMICS OF THE GALACTIC GLOBULAR CLUSTER NGC 3201
Patrick Cote, Douglas L. Welch, Philippe Fischer +1
B,V CCD frames have been used to derive surface brightness profiles for NGC 3201 out to ~18 arcmin. A total of 857 radial velocities with median precision ~1 km/s for 399 member gi…
MACHO COLLABORATION SEARCH FOR BARYONIC DARK MATTER VIA GRAVITATIONAL MICROLENSING
K. Griest, C. Alcock, R. A. Allsman +15
Results are presented from the MACHO collaboration gravitational microlensing search. The experiment and the nearly 50 microlensing events that have been detected are described. Li…
Cepheids in the Magellanic Clouds
D. L. Welch, C. Alcock, D. P. Bennett +12
In the past few years, the Magellanic Clouds have been the targets for several major variable star surveys. The results of these surveys are now becoming available and it is clear…