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Unusual Balmer-Line Variations in the Radio-Loud AGN 4C 37.43

Published online by Cambridge University Press:  12 April 2016

P. Romano ,
J. Sulentic ,
P. Marziani ,
M. Calvani ,
M. Moles  and
T. Zwitter
P. Romano
Affiliation:
Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL 35487, USA
J. Sulentic
Affiliation:
Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL 35487, USA
P. Marziani
Affiliation:
Osservatorio Astronomico, 1-35122 Padova, Italy
M. Calvani
Affiliation:
Osservatorio Astronomico, 1-35122 Padova, Italy
M. Moles
Affiliation:
Observatorio Astronomico Nacional, Madrid, Spain
T. Zwitter
Affiliation:
Faculty of Mathematics and Physics, University of Ljubljana, Slovenia

Abstract

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We present new observations of the quasar 4C 37.43 in the course of a more general study of broad-line profiles in radio-loud AGN. During the most recent observations it became obvious that the broad profile Hβ had changed significantly. Difference spectra show that a new blue component has appeared on the Hβ profile. The centroid of this new component is displaced about 2500 km s−1 from the rest frame [O III] λ5007. A corresponding blueshifted He IIλ4686 component may have also appeared.

Type
III. Broad-Line Profiles and Variability
Information
International Astronomical Union Colloquium , Volume 159: Emission Lines in Active Galaxies: New Methods and Techniques , 1997 , pp. 203 - 204
Copyright
Copyright © Astronomical Society of the Pacific 1997

References

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