Computer Science
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987nascp2466..401k&link_type=abstract
Star formation in galaxies, Proceedings of a conference at the California Institute of Technology, Pasadena, California, June 16
Computer Science
5
Interacting Galaxies, Irregular Galaxies, Radio Emission, Spiral Galaxies, Star Formation, Stellar Luminosity, Disk Galaxies, H Alpha Line, Infrared Radiation, Line Spectra, Radio Bursts, Star Formation Rate
Scientific paper
Measurements of H alpha emission line fluxes and FIR fluxes in approx. 100 interacting spirals were used to investigate the effects of close tidal interactions on the disk and nuclear star formation rates in galaxies. Two samples of interacting spirals were studied, a complete sample of close pairs, and a set of strongly perturbed systems from the Arp atlas. Both the integrated H alpha luminosities and FIR luminosities are enhanced in the interacting galaxies, indicating that the encounters indeed trigger massive star formation in many cases. The response of individual galaxies is highly variable, however. A majority of the interacting spirals exhibit normal star formation rates, while a small fraction are undergoing bursts with luminosities which are rarely, if ever, observed in noninteracting systems. Virtually all of the latter are in the Arp sample, indicating that the Arp atlas is heavily biased to the most active star forming systems.
Hummel Evi
Keel William C.
Kennicutt Robert C.
Roettiger Kurt Alan
van der Hulst J. M.
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