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Evidence for Activity in the Spiral Galaxy NGC4319

Published online by Cambridge University Press:  04 August 2017

Jack W. Sulentic
Jack W. Sulentic*
Affiliation:
Department of Physics and Astronomy, University of Alabama, University, AL 35486

Abstract

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Radio and optical evidence for activity in the spiral galaxy NGC4319 is presented. N4319 appears to be one of the first spirals to exhibit double lobe radio structure outside of the nuclear regions. The optical data show that 1) the quasar M205 is connected to the nucleus of N4319 and 2) that a similarly connected region on the opposite side of the nucleus is expanding towards us with V ~ 103 km s−1. It is suggested that the unusual Hα/[NII] λ 6583 ratio (≤ 0.3) indicates that the entire central (7 kpc diameter) disk of N4319 has been shock excited by this activity.

Type
VII. Low Level Activity and Intermediate Objects
Information
Symposium - International Astronomical Union , Volume 121: Observational Evidences of Activity of Galaxies , 1987 , pp. 483 - 488
Copyright
Copyright © Reidel 1987 

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