Outer bulge and thin disc of the Milky Way

Details Outer bulge and thin disc of the Milky Way Outer bulge and thin disc of the Milky Way

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf..423p&link_type=abstract

SF2A-2002: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 24-29, 2002, Eds.: F. Combes and D. Barret,

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Scientific paper

Using a Monte Carlo fitting method based on Besancon Model simulations and infrared data (magnitude K and color J-K) in bulge region (mostly fieds are in longitudes -12 < l < 12 degrees and latitudes -4 < b < 4 degrees), we deduce the parameters of the triaxial outer bulge (or bar) and the old thin disc of our Galaxy. First results show a very oblate outer bulge, with the major axis almost on the galactic plane and with an angle from the line Sun - Galactic Center of about 11 degrees. The thin disc has got an important hole. These results are consistent with other studies, especially studies based on star counts.

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