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Published October 1988 | Published
Journal Article Open

A catalog of IRAS observations of large optical galaxies


A catalog is presented of the IRAS observations of 85 galaxies listed in the Second Reference Catalogue of Bright Galaxies with blue-light isophotal diameters greater than 8'. "Total" flux densities at 12, 25, 60, and 100 µm, obtained from spatial maps constructed from co-added IRAS detector data, are reported. Infrared brightness profiles of the detected galaxies and infrared surface brightness contour maps of the galaxies for which structural features were resolved are displayed in an atlas. A far-infrared classification scheme based on the degree of central concentration and spatial structure of the 60 µm emission of the best-resolved galaxies is proposed. The 60 µm and blue-light isophotal diameters of the largest galaxies are compared.

Additional Information

© 1988 American Astronomical Society. Received 1987 June 22; accepted 1988 January 11. This catalog could not have been produced without the able assistance of the staff of the Infrared Processing and Analysis Center (IPAC). In particular, the authors thank Dr. J. Good for developing the two-temperature model, Drs. G. Helou and F. Boulanger for useful comments on this work, E. Barba for preparing the manuscript, and the IPAC Data Management Team members (G. Smith, G. Lairmore, J. Lampley, H. Hanson, R. Beck, E. Erwin, D. Jackson, L. Lloyd, and R. Urban) for their data processing support. We thank the Palomar Observatory (California Institute of Technology), the European Southern Observatory, and the Mount Wilson and Las Campanas Observatories (Carnegie Institution of Washington) for granting permission to reproduce and display the optical photographs presented in the atlas. This research was supported by The National Aeronautics and Space Administration through the IRAS Extended Mission Program.

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