Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...375..569a&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 375, July 10, 1991, p. 569-582.
Astronomy and Astrophysics
Astronomy
4
Companion Stars, Galactic Evolution, Interacting Galaxies, Star Formation, Brightness Distribution, H I Regions, Infrared Astronomy, Interstellar Matter
Scientific paper
NGC 2777 is shown to be typical of a class of galaxies that are composed predominantly of recently formed stars and that are companions to larger galaxies. It is argued that star formation acativity is not stimulated by gravitational or collisional encounter with the main galaxy. Evidence is discussed which suggests that these kinds of companions are formed in ejection events from older galaxies and that they are more recently created galaxies. Star formation in jets is proposed as the explanation for the strong, general correlation between nonthermal and infrared emission in galaxies.
Arp Halton
Sulentic Jack W.
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