Star-burst galactic nuclei

Details Star-burst galactic nuclei Star-burst galactic nuclei

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...268..602b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 268, May 15, 1983, p. 602-627. NSF-supported research.

Astronomy and Astrophysics

Astronomy

317

Galactic Nuclei, Hot Stars, Infrared Astronomy, Seyfert Galaxies, Spectrophotometry, Stellar Evolution, Active Galactic Nuclei, Active Galaxies, Astronomical Maps, Color, Early Stars, Emission Spectra, Galactic Evolution, H Alpha Line, Luminosity, Magnitude, Radiant Flux Density, Space Density, Spectral Line Width

Scientific paper

Markarian (1967) has conducted a survey of galaxies having strong ultraviolet continua. In connection with this survey, a new group of galaxies was discovered which could provide additional insight into the nature and evolution of active galactic nuclei. The optical morphology of the discovered galaxies is similar to that shown by Seyfert galaxies, with dominant feature often being a bright, starlike nucleus. However, these nuclei do not usually display the broad emission-line spectra so characteristic of the Seyferts. Their narrow emission features and other observable properties can be explained by the presence of a hot, young star population. For this reason, these objects have become known as star-burst nuclei. The nuclear star-burst phenomenon might supply material for gravitational accretion, and, therefore, for the development of active galaxies. Balzano and Weedman (1981) have studied these nuclei as a distinct group. The present investigation represents the first comprehensive survey.

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