NOAO >   Observing Info >   Approved Programs >   2012A-0385

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Proposal Information for 2012A-0385


PI: Davide Lena, RIT, dxl1840@g.rit.edu
Address: Astronomy Department, 54 Lomb Memorial Drive, Room 1258, Bldg 76, Rochester, NY 14623, USA

CoI: Andrew Robinson, RIT
CoI: Thaisa Storchi Bergmann, UFRGS
CoI: David Axon, RIT
CoI: Allan Schnorr Muller, UFRGS

Title: Mapping sub-kiloparsec gas flows in nearby AGN

Abstract: We propose GMOS IFU emission-line spectroscopy of the extended Halpha gas in the inner kiloparsec of nearby active galactic nuclei (AGN) hosts, selected for having dusty nuclear spirals, in order to test the hypothesis that these spirals trace the channels through which the nuclear supermassive black hole is being fed. This study is motivated by the recent results obtained by our group for three nearby galaxies with LINER nuclei: NGC1097, NGC6951 and M81. In these galaxies, the Halpha kinematics within the inner kiloparsec shows streaming motions towards the nucleus with speeds of the order of 50 km/s. This result suggests that dusty nuclear spirals do trace inflows, but this needs to be confirmed in a larger sample of AGN's, including a broader range of activity types. As the next step towards this goal, we propose to use Gemini/GMOS-IFU to map the gas kinematics in three nearby galaxies: Mrk 766, NGC 4593 and NGC4939, all three having nuclear spirals and being more active than the LINERs so far observed.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2012A-0385

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