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The Face-on View of the Milky Way: Gas Dynamics in the COBE NIR Bulge and Disk

1998/12/08 by P. Englmaier, Peter Englmaier, Ortwin Gerhard +3
Physics and Astronomy · #Astro and Planetary Science #Astrophysics (astro-ph) #Cosmology and Gravitation Theories #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/9812166

Latex, 4 pages, 2 figures. To appear in the proceedings of the `Galaxy Dynamics' conference held at Rutgers Univ., August 8-12, 1998

arxiv created 1998/12/08 · openalex publication_date 1998/12/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report simulations of the gas flow in the gravitational potential of the COBE NIR bulge and disk. These models lead to four--armed spiral structure between corotation of the bar and the Sun, in agreement with the observed spiral arm tangents. The 3-kpc-arm is identified with one of the arms emanating from the ends of the bar.

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