The Non-Axisymmetric Milky Way

Details The Non-Axisymmetric Milky Way The Non-Axisymmetric Milky Way

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996prnc.rept.....s&link_type=abstract

Technical Report, Princeton Univ. Observatory NJ United States

Astronomy and Astrophysics

Astronomy

Astronomical Models, Milky Way Galaxy, Galactic Structure, Star Distribution, Cosmic Dust, Galactic Mass, Mass Distribution, Density Distribution, Zodiacal Light, Infrared Radiation, Local Group (Astronomy), Gravitational Lenses, Red Shift

Scientific paper

The Dwek et al. model represents the current state-of-the-art model for the stellar structure of our Galaxy. The improvements we have made to this model take a number of forms: (1) the construction of a more detailed dust model so that we can extend our modeling to the galactic plane; (2) simultaneous fits to the bulge and the disk; (3) the construction of the first self-consistent model for a galactic bar; and (4) the development and application of algorithms for constructing nonparametric bar models. The improved Galaxy model has enabled a number of exciting science projects. In Zhao et al., we show that the number and duration of microlensing events seen by the OGLE and MACHO collaborations towards the bulge were consistent with the predictions of our bar model. In Malhotra et al., we constructed an infrared Tully-Fisher (TF) relation for the local group. We found the tightest TF relation ever seen in any band and in any group of galaxies. The tightness of the correlation places strong constraints on galaxy formation models and provides a independent check of the Cepheid distance scale.

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