NEAR-INFRARED IMAGING OF NGC-5195

We have imaged NGC 5195, the near companion of M51, in the near infrared J, H, and K bands with the Wyoming Infrared Camera. The observations map a 3.5 by 3.5 arcmin field at a resolution of 2 arcsec. We describe our data reduction and present surface and aperture photometry. The obscuration which confuses optical classifications is unimportant in the infrared. For the first time, we have an unobstructed view of the galaxy from which to perform a morphological classification and make measurements. We discuss three distinct components which are clearly visible in our images: a bulge, a bar, and a disk. We analyze the bulge component by fitting isophotes in the shape of generalized ellipses. The central portion of the bulge has a surface brightness distribution consistent with a r1/4 surface brightness law, and displays a pronounced isophotal twist. Outside the center, a bar extends north to south. We find no evidence for either a lens or a ring. Inside the diameter marked by the ends of the bar, the surface brightness of the disk falls below the extrapolated surface brightness of the disk; hence the galaxy belongs to Freeman's type II [ApJ, 160, 811 (1970)]. An exponential surface brightness model fits the disk of the galaxy well. The disk component is detectable to a limiting magnitude of mu(H) = 20 mag/square". Of particular interest is the regularity of the outermost isophotes. They remain elliptical. We find no evidence for tidal disruption of the old stellar population disk by M51.