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Date and Time of the Query: 2019-04-23 T01:17:07 PDT
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For refcode 1989ApJ...342..718G:
Retrieve 177 NED objects in this reference.
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Copyright by American Astronomical Society. Reproduced by permission
1989ApJ...342..718G NEAR-INFRARED OBSERVATIONS OF GALAXIES IN THE COMA SUPERCLUSTER G. GAVAZZI Istituto di Fisica Cosmica del CNR, Milan AND G. TRINCEHIERI Osservatorio Astrofisico di Arcetri, Florence; and Smithsonian Astrophysical Observatory Received 1988 October 17; accepted 1988 December 29 ABSTRACT We present new observations in the near-infrared for 136 normal galaxies in the Coma supercluster region. H band magnitudes have been derived for all objects and near-infrared colors for a large fraction of them. We confirm that the near-infrared colors (J - H) and (J - K) are a constant for all morphological types, from elliptical to irregular systems, while the optical-to-near-infrared color (J- V) depends strongly on Hubble type and galaxy inclination. Excess radio emission and far-infrared emission are found to correlate with recent star formation activity, with bluer galaxies presenting a larger excess radio (and far-infrared) emission relative to the H band emission than redder galaxies. We have also looked at the infrared Tully-Fisher relation using these new infrared measurements and H I observations from the literature. These data, which represent the larger data sample in this region, indicate that the magnitude-line width relation for galaxies is at best a very difficult tool to use to measure the distance scale H_0_: a large range of values is obtained unless we apply restrictive criteria to the selection of the sample. Subject headings: galaxies: clustering - galaxies: internal motions - galaxies: photometry
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