R
R. C. Roeder
Researcher at University of Toronto
Publications - 9
Citations - 86
R. C. Roeder is an academic researcher from University of Toronto. The author has contributed to research in topics: Quasar & Redshift. The author has an hindex of 4, co-authored 9 publications receiving 86 citations.
Papers
More filters
Journal ArticleDOI
IUE observations of extragalactic objects
A. Boksenberg,M. A. J. Snijders,R. Wilson,P. Benvenuti,J. Clavell,F. D. Macchetto,M. V. Penston,Albert Boggess,Theodore R. Gull,P. M. Gondhalekar,Arthur L. Lane,B. E. Turnrose,C.-C. Wu,W. M. Burton,Amy Smith,F. Bertola,Massimo Capaccioli,A. Elvius,R. A. E. Fosbury,M. Tarenghi,M.-H. Ulrich,R. L. Hackney,Carole Jordan,C. G. Perola,R. C. Roeder,Maarten Schmidt +25 more
TL;DR: In this paper, the authors presented a preliminary analysis given for all six objects, discussing the continuous spectrum, extinction, emission line spectrum and absorption line spectrum, where possible for each case.
Journal ArticleDOI
IUE observations of the quasar 3C 273
Albert Boggess,E. Daltabuit,Silvia Torres-Peimbert,F. B. Estabrook,H. D. Wahlquist,Arthur L. Lane,R. Green,J. B. Oke,O. M. Schmidt,Barbara A. Zimmerman,Donald C. Morton,R. C. Roeder +11 more
TL;DR: IUE observations indicate that the spectrum of 3C 273 is similar to that of other large-redshift quasars as discussed by the authors, and there is marginal evidence for a depression of the continuum shortward of the Lyman-alpha emission line.
Journal ArticleDOI
Possible Selection Effect in the Measurement of Quasar Redshifts
TL;DR: In this article, the authors present observational data which indicate that at least one selection effect can be detected in the observed distribution and the implications for the power spectrum and the comparison of the heights of peaks at different values of z will be evident.
Journal ArticleDOI
Clusters of galaxies as gravitational lenses
C. C. Dyer,R. C. Roeder +1 more
TL;DR: In this article, the magnitude of the lens effect for clusters of galaxies was examined and it was shown that it is unlikely that the observational effect claimed by Karoji and Nottale can be explained in this way.
Journal ArticleDOI
Significance of the angular diameter-redshift relation
TL;DR: In this article, the authors point out the important effects on the angular diameter-redshift relation caused by small scale inhomogeneities in the Friedmann model of the universe.