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FLASH redshift survey - I. Observations and catalogue
The FLAIR Shapley-Hydra (FLASH) redshift survey catalogue consists of4613 galaxies brighter than bJ= 16.7 (corrected for Galacticextinction) over a 700-deg2 region of sky in the generaldirection of the Local Group motion. The survey region is a70°× 10° strip spanning the sky from the ShapleySupercluster to the Hydra cluster, and contains 3141 galaxies withmeasured redshifts. Designed to explore the effect of the galaxyconcentrations in this direction (in particular the Supergalactic planeand the Shapley Supercluster) upon the Local Group motion, the 68 percent completeness allows us to sample the large-scale structure betterthan similar sparsely-sampled surveys. The survey region does notoverlap with the areas covered by ongoing wide-angle (Sloan or 2dF)complete redshift surveys. In this paper, the first in a series, wedescribe the observation and data reduction procedures, the analysis forthe redshift errors and survey completeness, and present the surveydata.
| The Shapley Supercluster. I. Spectroscopic Observations in the Central Region
We present a new analysis of the kinematics of the Shapley superclusterbased on radial velocities for 1087 galaxies in the clusters A3558(Shapley 8), A3528 (Klemola 21), A3532 (Klemola 22), A3530, A3556 (SC1321-314), A3559 (CE 1327-292), A3560, A3562, SC 1329-314 and in theintercluster region of the core of the supercluster, of which 367 arenew measurements. We also present accurate positions from APM and MAMAscans of the ESO/SERC Southern Sky Survey photographic plates. We obtainnew velocity dispersions and estimate the masses of the member clusters,evaluating dynamical models of the supercluster. The supercluster isfound to be significantly flattened. We find that for {OMEGA}_0_ = 0.3,H_0_= 75 km s^-1^ Mpc^-1^, the gravitational pull of the superclustermay account for up to 25% of the peculiar velocity of the Local Grouprequired to explain the dipole anisotropy of the Cosmic MicrowaveBackground radiation, in which case the mass of the supercluster wouldbe dominated by intercluster dark matter. This fractional contributionwould be considerably higher for combinations of significantly lowervalues of {OMEGA}_0_ and higher values of H_0_.
| Redshifts for galaxies in southern clusters
Redshifts for galaxies, including the clusters ZW 9-19 and Klemola 27,in the ESO/SRC survey field 444 are presented based on observationscarried out in May 1980 and April 1981 with the 1.52-m ESO telescope inLa Silla. Satisfactory agreement is found with previous data. Thesurveyed sky area contains the Hydra/Centaurus supercluster with meanradial velocities between 3000 and 5000 km/s, behind which seems to be alarge empty space extending out to a redshift of about 9000 km s.
| Redshift observations in the Centaurus-Hydra supercluster region. I
The paper presents 111 new redshifts in the region of theCentaurus-Hydra supercluster. Also presented is the growth of theHydra-Centaurus structures as a function of the percolation vector, thesurface distribution of galaxies in this region, and the distribution inredshift of the observed galaxies.
| A comparison of distance scales for early-type galaxies
The distance scales of elliptical and lenticular galaxies areintercompared, based on the velocity dispersion indicator derived from arevised Faber-Jackson relation. The scales are found to be in nearperfect agreement with scales derived from the luminosity index and fromthe 21 cm line width indicator. The scales are also in excellentagreement with the distance scale derived by Michard (1979). Additionsare offered for the general catalog of 424 early-type galaxies, and aseries of reduction equations is presented which reduces the externalerrors in the distance moduli.
| Redshifts in Klemola 27
Observational data for galaxies in the galaxy cluster Klemola 27gathered over the last few years are presented. These are mostly newredshifts and further, accurate coordinates and morphological types fora large number of 'prominent' galaxies in the ESO/SRC-Survey fields 444and 445. A few preliminary H I radial velocities are also reported. Thedata available for this cluster are briefly discussed.
| A catalog of morphological types in 55 rich clusters of galaxies
Data are presented from a study of 55 rich clusters of galaxies. Thedata include positions, morphological types, estimated total magnitudes,bulge sizes, and ellipticities for about 6000 galaxies, as determinedfrom high scale photographic plates. Data reduction procedures aredescribed, and a brief analysis of cluster richness, which indicatesthat Abell richness classes are only rough indicators of total clustermembership, is included.
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