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Variable Stars in the MACHO Collaboration1 Database

Published online by Cambridge University Press:  12 April 2016

Kem H. Cook
Affiliation:
Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, MS L-413, Livermore, CA 94550, U.S.A.
C. Alcock
Affiliation:
Lawrence Livermore National Laboratory, Livermore, CA 94550, U.S.A.
R.A. Allsman
Affiliation:
Mt. Stromlo and Siding Spring Observatories, Weston, ACT 2611, Australia
T.S. Axelrod
Affiliation:
Mt. Stromlo and Siding Spring Observatories, Weston, ACT 2611, Australia
K.C. Freeman
Affiliation:
Mt. Stromlo and Siding Spring Observatories, Weston, ACT 2611, Australia
B.A. Peterson
Affiliation:
Mt. Stromlo and Siding Spring Observatories, Weston, ACT 2611, Australia
P.J. Quinn
Affiliation:
Mt. Stromlo and Siding Spring Observatories, Weston, ACT 2611, Australia
A.W. Rodgers
Affiliation:
Mt. Stromlo and Siding Spring Observatories, Weston, ACT 2611, Australia
D.P. Bennett
Affiliation:
Center for Particle Astrophysics, Univ. of California, Berkeley, CA, U.S.A.
J. Reimann
Affiliation:
Center for Particle Astrophysics, Univ. of California, Berkeley, CA, U.S.A.
K. Griest
Affiliation:
Univ. of California, San Diego, CA 92093, U.S.A.
S.L. Marshall
Affiliation:
Univ. of California, Santa Barbara, CA 93106, U.S.A.
M.R. Pratt
Affiliation:
Univ. of Washington, Seattle, WA 98195, U.S.A.
C.W. Stubbs
Affiliation:
Univ. of Washington, Seattle, WA 98195, U.S.A.
W. Sutherland
Affiliation:
Univ. of Oxford, Oxford OX1 3RH, U.K.
D. Welch
Affiliation:
McMaster Univ., Hamilton, ON L8S 4M1, Canada
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Abstract

The MACHO Collaboration’s search for baryonic dark matter via its gravitational microlensing signature has generated a massive database of time ordered photometry of millions of stars in the LMC and the bulge of the Milky Way. The search’s experimental design and capabilities are reviewed and the dark matter results are briefly noted. Preliminary analysis of the ~ 39,000 variable stars discovered in the LMC database is presented and examples of periodic variables are shown. A class of a periodically variable Be star is described which is the closest background to microlensing which has been found. Plans for future work on variable stars using the MACHO data are described.

Type
Part 1. The Scientific Programme
Copyright
Copyright © Astronomical Society of the Pacific 1995

Footnotes

2

Center for Particle Astrophysics, University of California

1

The MACHO Collaboration is a collaboration between the Lawrence Livermore National Laboratory (DOE), Mount Stromlo and Siding Spring Observatories (ANU), and the Center for Particle Astrophysics at the University of California, Berkeley (NSF).

References

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