Kinematics of metal-rich circumnuclear regions from future 8M class observations

TERLEVICH, E.; HÄGELE, G. F.; DÍAZ, A. I.; TERLEVICH, R.; CARDACI, M. V.

Miami

Workshop; First Light Science with the GTC; 2006

We have measured gas and stellar velocity dispersions in 5 circumnuclear starforming regions (CNSFRs) and the nucleus of the barred spiral galaxy NGC3351. The stellar dispersions have been measured from high resolution spectra of the Caii  8494, 8542, 8662A triplet lines (CaT), while the gas velocity dispersions have been measured by Gaussian fits to the H  4861A and [Oiii]  5007A lines on high dispersion spectra. We determined the line of sight stellar velocity along each slit. Extractions were selected such as to maximize signal-to-noise while preserving spatial resolution.