Abstract
ABSTRACT One of the main difficulties in extending the Hubble diagram to great distances is related to the problem of bias in selecting candidate objects for spectroscopic or photometric study. A report is presented on a continuing optical study of 3CR radio galaxies. The faint, presumably distant 3CR sources all have very high radio luminosities, and this property correlates with the long-known propensity of the central optical galaxy to show strong (nuclear) emission lines. The considered faint radio galaxies have very large emission-line equivalent widths, which represents an enormous aid to a 'safe' redshift determination. Attention is given to emission-line properties, some physical inferences from the emission lines, and some overall properties of the radio galaxies.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Publications of the Astronomical Society of the Pacific
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.