The Galactic bulge as Seen by Gaia

Details The Galactic bulge as Seen by Gaia The Galactic bulge as Seen by Gaia

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.576..143r&link_type=abstract

"Proceedings of the Gaia Symposium "The Three-Dimensional Universe with Gaia" (ESA SP-576). Held at the Observatoire de Paris-Me

Physics

1

Galaxy Bulge, Gaia

Scientific paper

Gaia will give tremendous results on galactic structure and evolution. One expects to get unprecedented information even in dense regions like the Galactic bulge. However, due to extinction and crowding, part of the inner Galaxy may be unreachable. Using the Besançon model of the Milky Way and assuming different extinction maps, we estimate the stellar density of stars as a function of galactic latitude and longitude, and magnitude. We explore the possibility of reaching bulge stars in regions where the extinction is not too high to allow for a significant number of bulge stars to be detected by the different Gaia instruments. We also address the problem of crowding in these regions. We show that there are a significant number of regions where bulge stars will be detected and accurately measured.

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