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S. M. Chung, A. Jangren, J. J. Salzer (Wesleyan U.)
A powerful way to probe the physical properties of galaxies is to study them in more than one wavelength regime. We have compiled a list of hundreds of emission-line galaxies (ELGs) that have been detected in two surveys - KISS and 2MASS. KISS (KPNO International Spectroscopic Survey) is an emission-line galaxy survey that utilizes objective-prism data to search for strong H\alpha emission in galaxies. 2MASS (2-Micron All Sky Survey) is a magnitude-limited survey of all objects in the JHK near-infrared (NIR) wavebands. We examine the relationships of various properties for our sample of emission-line galaxies, using both optical and near-infrared data. We provide some interesting insights regarding the colors of starbursting galaxies and AGNs, and illustrate the effects of dust absorption and reddening on the sample galaxies. We also study the observed emission-line strengths (H\alpha equivalent width and H\alpha luminosity) and how they are correlated with various photometric quantities such as galaxy color and luminosity. Finally, we present a NIR metallicity-luminosity relation.
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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.