Titlebook: Clusters and Groups of Galaxies; International Meetin F. Mardirossian,G. Giuricin,M. Mezzetti Book 1984 D. Reidel Publishing Company, Dordr

Ligament

The Spatial Distribution of Galaxies in the Southern Sky,n the northern hemisphere. It will be some years before the quantity and quality of redshifts in the southern hemisphere can complement the northern data and correct the imbalance. In the meantime, we wish to offer a preliminary examination using available data — albeit somewhat heterogeneous.

BINGE

Statistical Analysis of the Shapes of Rich Superclusters,redshifts. We describe two tests, a principal axes test and a velocity gradient test, which are especially useful for this purpose. We apply these tests to samples of clusters from the Abell catalog and search for evidence of disk-like or filamentary structures.

misanthrope

ABHOR

Superclusters: A New Insight into the Problem of Groups with Discrepant Redshifts,ut 6000 km/s, whilst the fifth, NGC 7320, has v~ 800 km/s. Several attempts of estimating the density of the “Stephan’s Quintet like” groups have been carried on, giving contradictory results about the evidence for a chance projection in the discordant redshift groups. (See e.g. 1,2,3).

ureter

Kurt Magnus,Karl Popp,Walter SextroAfter a brief historical review of the discovery of the Local Supercluster, this paper reports on recent research on the space distribution of nearby galaxies, on the space motions of the Sun, Galaxy and Local Group relative to these nearby galaxies, and on a first empirical mapping of the velocity field near the plane of the Local Supercluster.

现存

https://doi.org/10.1007/978-3-8351-9227-0Studies of the frequency distribution of supergalactic position angles for spiral galaxies of the Local Supercluster show no preferred orientation. However, for galaxies in the magnitude range 14.0≤m.≤15.5 positioned over the whole sky, there is a preferred supergalactic position angle of 94° with a dispersion of 40°.

invulnerable

Grundbegriffe und Darstellungsmittel,A series of maps showing the distribution of galaxies in different radial velocity ranges have been prepared.

Increment

https://doi.org/10.1007/978-3-663-01339-6Two objective prisms with dispersions of 2480A/mm and 840A/mm (at Hγ) are available on the U.K. Schmidt telescope. Combinations give dispersions of 1240A/mm and 620A/mm at Hγ. This note discusses the accuracy of preliminary galaxy redshift surveys using the two intermediate dispersions.

合群

系列