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Warmers: Massive Stars in the Nuclei of Galaxies

Published online by Cambridge University Press:  04 August 2017

Jorge Melnick ,
Roberto Terlevich  and
Mariano Moles
Jorge Melnick
Affiliation:
European Southern Observatory
Roberto Terlevich
Affiliation:
Royal Greenwich Observatory
Mariano Moles
Affiliation:
Instituto de Astrofisica de Andalucia

Extract

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A very small minority of all galaxies exhibit activity in their nuclear regions. The best known and most studied signature of nuclear activity is the presence of emission lines in the optical spectrum. In fact, active galaxies are classified as Seyferts, Liners or Starburst galaxies according to the strengths, widths and intensity ratios of their nuclear emission lines (figure 1).

Type
Poster Papers 4
Information
Symposium - International Astronomical Union , Volume 116: Luminous Stars and Associations in Galaxies , 1986 , pp. 505 - 509
Copyright
Copyright © Reidel 1986