NOAO >   Observing Info >   Approved Programs >   2018A-0265

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Program Information for 2018A-0265


PI: Merida Batiste, Georgia State U., batiste@astro.gsu.edu
Address: 25 PARK PLACE, ATLANTA, GA 30303 USA

CoI: Misty C Bentz, Georgia State U.

Title: Improving Bulge Stellar Velocity Dispersion Estimates for Calibration of the Mbh-sigma* Relation for AGN

Abstract: We propose to obtain spatially resolved spectroscopy of the bulges of 5 nearby (z=0.006 - 0.04) AGN host galaxies, to significantly improve their bulge stellar velocity dispersion estimates for use in calibrating the Mbh-sigma* relation for active galaxies. The Mbh-sigma* relation is a powerful tool for evolutionary studies, which are generally limited to active galaxies, since the intensely bright AGN emission allows Mbh to be probed over cosmological distances. Accurate calibration with a sample of local AGN is essential, however most local AGN with Mbh determinations are late-type spirals with significant kinematic substructure, which can bias velocity dispersion estimates from single aperture and long-slit spectroscopy. Spatially resolved spectroscopy significantly reduces these effects. The proposed observations would increase our total sample size to 21 active galaxies with spatially resolved spectroscopy, and would almost double our sample size at the low MBh end. The proposed targets will anchor the low Mbh end of the Mbh-sigma* relation, promising to dramatically improve calibration of the relation, thereby improving its utility as a probe of galaxy evolution.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2018A):  GEM-NQ/GMOSN -- 22hrs band 3 (GN-2018A-Q-325 )


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 >   2018A-0265

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