Abstract
IN a recent communication Lewis1 concludes: “… it is not surprising to find no confirmation” of Arp's2 reported anomalous redshifts in groups of galaxies. One of the groups Lewis mentions is the Sculptor Group, with redshifts and apparent magnitudes as plotted in Fig. 1. The data3 show that the two faintest (and according to Lewis's own data, the least massive members of the group) have an average excess redshift of + 400 km s−1. This is a very large value of redshift discrepancy for a recognized group, and is almost a factor of two larger than any included in ref. 2. But because Lewis carefully shields us from this kind of evidence, it is not surprising to find him later arriving at a null conclusion.
This is a preview of subscription content, access via your institution
Access options
References
Lewis, B. M., Nature Physical Science, 230, 13 (1971).
Arp, H., Nature, 225, 1033 (1970).
Lewis, B. M., thesis, Australian National University (1969).
Arp, H., Publ. Astron. Soc. Pacific, 80, 129 (1968).
Roberts, M. S., “Gaseous Content of Galaxies”, in External Galaxies and Quasi-Stellar Objects, Intern. Astron. Union Symp. No. 44, Uppsala, Sweden, August 1970.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
ARP, H. Comments on Anomalous Redshifts. Nature Physical Science 231, 103–104 (1971). https://doi.org/10.1038/physci231103a0
Received:
Issue date:
DOI: https://doi.org/10.1038/physci231103a0
This article is cited by
-
Galaxy clusters as relativistic spherically-symmetrical inhomogeneities
Astrophysics and Space Science (1977)
-
On the Redshifts of Galaxies
Nature (1971)
