The Central Kiloparsec of NGC 4303: Gas Dynamics in a Double-Barred Galaxy

Details The Central Kiloparsec of NGC 4303: Gas Dynamics in a Double-Barred Galaxy The Central Kiloparsec of NGC 4303: Gas Dynamics in a Double-Barred Galaxy

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.4315s&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #43.15; Bulletin of the American Astronomical Society, Vol. 34, p.712

Astronomy and Astrophysics

Astronomy

Scientific paper

The CO(1-0) line emission in the central kiloparsec of the double-barred galaxy NGC 4303 was observed with the Owens Valley Radio Observatory (OVRO) millimeter interferometer. Most of the molecular line emission comes from two straight gas lanes which run north-south along the leading side of the large-scale primary bar. Velocity deviations of up to 90 km/s from the mean rotational velocity are associated with these gas lanes. Inside a radius of about 5''(400 pc) the molecular gas forms a spiral pattern which, for the northern arm, can be traced to the nucleus. The combination of our OVRO data with archival HST images enables us to perform a comparison against dynamical models of gas flow in the inner kiloparsec of single- and double-barred galaxies.

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