University Of Arizona Astronomy

The University of Arizona in Tucson Arizona

Event:		"Gas Dynamics in the Central Kiloparsec: Fueling the Nucleus"
Event Date/Time:		February 27, 2003 4:00 pm
Location:		Steward Observatory Room N210
Speaker:		Dr. Eva Schinnerer
Institution:		National Radio Astronomy Observatory
Subject(s):		Steward/NOAO Colloquium
Contact:		Simon Radford email: sradford@nrao.edu
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Event Description Posted: February 25, 2003 3:36 pm		NOAO/KPNO – NSO, DEPARTMENT OF ASTRONOMY AND STEWARD OBSERVATORY AND NRAO The University of Arizona <><><><><><><><><><><><><><><><><><><><><><><><><> JOINT COLLOQUIUM <><><><><><><><><><><><><><><><><><><><><><><><><> DR. EVA SCHINNERER National Radio Astronomy Observatory "Gas Dynamics in the Central Kiloparsec: Fueling the Nucleus" Thursday, February 27, 2003 4:00 p.m. Steward Observatory Lecture Hall – Room N210 Abstract: Nuclear activity in galaxies is believed to be closely linked to the availability of (molecular) gas at the very center. Bars, which are commonly observed in spiral galaxies, are thought to play a key role in this process by transporting gas from the outer large-scale disk to the central kiloparsec. Less well-established is the fueling of the inner regions; secondary or inner bars were first proposed to bridge the last few 100 pc, but recently other mechanisms, such as m=1 modes, and/or gas density waves have been suggested to be equally or more important. Recent observations of the molecular gas kinematics in the central regions of nearby galaxies using mm-interferometers allow us to directly test the theories against observations. **Refreshments at 3:30PM in the Lobby**