1990•Unpublished venueRequires access

A comprehensive study of the peculiar spiral galaxy NGC 1808. I. Radio continuum and CO line observations.

Marcus S. Dahlem, S. Aalto, U. Klein, R. S. Booth, U. Mebold, R. Wielebinski, H. Lesch

Abstract

La galaxie particuliere NGC 1808 a ete observee par SEST et VLA dans la raie CO et dans le continuum radio. Une polarisation radio lineaire est trouvee, indiquant la presence d'un champ magnetique a grande echelle. La distribution de CO montre une concentration centrale. Un anneau moleculaire en rotation d'environ 1.4 kpc de diametre est mis en evidence. Les observations Hα revelent la presence d'une corde lineaire d'agregats H II diriges hors de la region de flambee stellaire centrale. Son origine possible ainsi que la ressemblance des regions de flambee stellaire centrales de M82 et NGC 1808 sont discutees.

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Key concepts: Physics, Astrophysics, Spiral galaxy, Galaxy, Astronomy