Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2010-01-07
AIP Conf. Proc. 1240 (2010) 411-412
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
3 pages, 1 figure, to be published in "Hunting for the Dark: The Hidden Side of Galaxy Formation", Malta, 19-23 Oct. 2009, eds
Scientific paper
10.1063/1.3458549
We examine systematic problems in determining the local matter density from the vertical motion of stars, i.e. the 'Oort limit'. Using collisionless simulations and a Monte Carlo Markov Chain technique, we determine the data quality required to detect local dark matter at its expected density. We find that systematic errors are more important than observational errors and apply our technique to Hipparcos data to reassign realistic error bars to the local dark matter density.
Garbari Silvia
Lake George
Read Justin I.
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