The Galactic bulge as seen in optical surveys

Details The Galactic bulge as seen in optical surveys The Galactic bulge as seen in optical surveys

2008-12-19

arxiv.org/abs/0812.3743v1

Astronomy and Astrophysics

Astrophysics

In SF2A-2008: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics

Scientific paper

The bulge is a region of the Galaxy of tremendous interest for understanding galaxy formation. However measuring photometry and kinematics in it raises several inherent issues, such as severe crowding and high extinction in the visible. Using the Besancon Galaxy model and a 3D extinction map, we estimate the stellar density as a function of longitude, latitude and apparent magnitude and we deduce the possibility of reaching and measuring bulge stars with Gaia. We also present an ongoing analysis of the bulge using the Canada-France-Hawaii Telescope.

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