Information on resource 'Astrometric Microlensing Events Predicted from Gaia eDR3'
From the Gaia eDR3 catalogue we predict astrometric microlensing
events by foreground stars with high proper motion (μ > 100 mas/yr)
passing a background source in the next decades. Using Gaia DR3
photometry we determine an approximate mass of the lens, which we use
to calculate the expected microlensing effects. This yields 4842
microlensing events by 3791 different lenses between 2010 and 2066
with expected shifts larger than 0.1 mas between the lensed and
unlensed positions of the source. The past events might be interested
when analyzing the individual Gaia measurements). 685 of those are
expected to happen within the next decade (2021-2031). For 140 events
we also expect a magnification between 1 mmag and 0.6 mag.
Services defined within this resource descriptor
Tables defined within this resource descriptor
- plc3.data – queryable through TAP and ADQL
The final candidate table for astrometric microlensing events
predicted from Gaia eDR3. This has estimates of minimal distances,
epochs, etc. Columns prefixed with lens_ are for the lens, columns
prefixed with ob_ are for the lensed object.
- plc3.highpm
The "input table" containing stars with relatively high proper motion
within Gaia eDR3.
- plc3.rawcands
A table of candidates for optical microlensing.
gaia_source names are the lenses; names with ob_ in front are lensed
objects.
Copyright, License, Acknowledgements
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