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Published December 1986 | Published
Journal Article Open

Near-infrared observations of IRAS minisurvey galaxies


Near-infrared photometry at J, H, and K has been obtained for 82 galaxies from the IRAS minisurvey, a sample of infrared-selected galaxies. The near-infrared colors of these galaxies are similar to those of normal field spiral galaxies, but cover a larger range in J — H and H — K. There is evidence of a tighter correlation between the near- and far-infrared emission than exists between the far-infrared and the visible emission. These results suggest that hot-dust emission contributes to the 2.2 µm luminosity, and extinction by dust affects both the near-infrared colors and the visible luminosities. In addition, there is an indication that the far-infrared emission in many of the minisurvey galaxies is coming from a strong nuclear component.

Additional Information

© 1986 American Astronomical Society. Received 3 July 1986; revised 26 August 1986. The authors extend special thanks to C. G. Wynn-Williams, C. J. Persson, and S. E. Persson for helpful suggestions on preliminary versions of the manuscript. We also thank E. E. Becklin, J. N. Heasley, G. J. Hill, and C. G. Wynn-Williams of the Institute for Astronomy, University of Hawaii, as well as S. E. Persson of Mount Wilson and Las Campanas Observatories and C. J. Persson of the Infrared Processing and Analysis Center, for generously supplying a number of the redshifts reported in this paper. Steve Eales, also of the Institute for Astronomy, University of Hawaii, provided radio positions to clear up several positional ambiguities. Finally, we gratefully acknowledge a number of useful comments from the referee, Jay Frogel. The research presented in this paper was supported in part by the National Science Foundation grant AST 83-12699 and in part by the NASA IRAS extended mission program.

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Published - 1986AJ_____92_1254C.pdf


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