Observations from Australasia using the Gravitational Microlensing Technique
Philip Yock
, PASA, 17 (1), 35.

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Conclusions

Gravitational microlensing is a useful technique in astronomy. Several new results have been obtained using the technique, including:

elimination of brown dwarfs as halo dark matter

evidence for a bar in the Galaxy

spectroscopy of distant faint stars

measurements of limb darkening on distant stars

evidence for stars without Jupiter-like planets

evidence for a low-mass extrasolar planet

Many of these results were made possible by data from the original survey groups, MACHO, OGLE and EROS, being made readily available to follow-up groups. In the future, the Antarctic offers a promising site for extending the technique.

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© Copyright Astronomical Society of Australia 1997