The Fundamental Plane of Cluster Ellipticals in the Near-Infrared

Details The Fundamental Plane of Cluster Ellipticals in the Near-Infrared The Fundamental Plane of Cluster Ellipticals in the Near-Infrared

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...18510703p&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #107.03; Bulletin of the American Astronomical Society, Vol. 26, p.1497

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We present preliminary results from a near-infrared survey of elliptical galaxies in clusters within cz = 10,000 km s(-1) . Our goals are to calibrate various near-infrared distance-indicator relations for elliptical galaxies, investigate the differences between the relations in the optical and infrared, and to probe the Fundamental Plane correlations for elliptical galaxies in a bandpass which is relatively unaffected by the metallicity effects and dust extinction. We present K-band surface photometry of early-type galaxies in the Virgo, Perseus, and Abell 194 clusters. We have calculated the effective half-light radii r_e and mean surface brightness _e enclosed within that radius, and draw velocity dispersion data from the literature. We construct the K-band Fundamental Plane (r_e-_e-sigma ) from the data using bivariate analysis, and compare the tilt of the near-infrared plane to its optical counterpart. We also compute the infrared D_n diameters and radii defined by the Petrosian's eta function for all of the galaxies in the sample. Finally, we examine the dispersion of each distance relation with respect to each other, and with respect to other distance measurements (optical D_n-sigma , Fundamental Plane, and IR Tully-Fisher) from the literature.

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