NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-26 T18:01:56 PDT
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For refcode 1987ApJ...312..566A:
Retrieve 32 NED objects in this reference.
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NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
1987ApJ...312..566A Star formation rates in ring galaxies from IRAS observations P. N. Appleton and Curtis Struck-Marcell Abstract. IRAS and optical data for a sample of 26 ring galaxies are analyzed, and it is found that: (1) relatively high average values of far-infrared luminosity L(FIR), infrared to blue luminosity ratio L(FIR)/L(B), and color temperature compared to normal galaxies, implying a high recent star formation rate; (2) evidence that a large fraction of the young stars are located in the rings, indicating a very extended, coherent starburst; and (3) a possible trend of the dispersion of L(FIR) among rings as a function of ring diameter. Thus, within the uncertainties inherent in the study of this relatively small sample, it appears that ring galaxies represent a unique class of nonnuclear coherent starbursts. Key words: ASTRONOMICAL SPECTROSCOPY, GALACTIC STRUCTURE, INFRARED SPECTRA, RING GALAXIES, STAR FORMATION, STAR FORMATION RATE, VISIBLE SPECTRUM, INFRARED ASTRONOMY SATELLITE, SPACEBORNE ASTRONOMY, STARBURST GALAXIES, STELLAR LUMINOSITY
Retrieve 32 NED objects in this reference.
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