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High-Resolution Observations of the M81 Nucleus

Published online by Cambridge University Press:  07 August 2017

William C. Keel
William C. Keel*
Affiliation:
Dept. of Physics and Astronomy, University of Alabama, Tuscaloosa, AL 35487-0324, U.S.A.

Extract

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The nucleus of the nearby Sb galaxy M81 has been shown to exhibit many of the features prominent in luminous active galactic nuclei: a variable, compact VLBI radio source (Kellermann et al. 1976, Jones, Sramek and Terzian 1981), a central variable X-ray source (Elvis and van Speybroeck 1982, Fabbiano 1988), and broad wings of Balmer emission similar in extent to those typical to Seyfert 1 nuclei (Peimbert and Torres-Peimbert 1981, Shuder and Osterbrock 1981). The nucleus also shows a narrow-line spectrum in many ways typical of LINERs (Heckman 1980), now known to be representative of early-type spiral nuclei in general.

Type
Part 9: Intrinsically Weak AGNs
Information
Symposium - International Astronomical Union , Volume 134: Active Galactic Nuclei , 1989 , pp. 513 - 514
Copyright
Copyright © Kluwer 1989 

References

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