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J/AJ/110/463 Kinematics of the Shapley supercluster (Quintana+ 1995)
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The Shapley supercluster. I. Spectroscopic observations in the central region
Quintana H., Ramirez A., Melnick J., Raychaudhury S., Slezak E.
<Astron. J. 110, 463 (1995)>
=1995AJ....110..463Q
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ADC_Keywords: Clusters, galaxy ; Radial velocities
Abstract:
We present a new analysis of the kinematics of the Shapley
supercluster based on radial velocities for 1087 galaxies in the
clusters A3558 (Shapley 8), A3528 (Klemola 21), A3532 (Klemola 22),
A3530, A3556 (SC 1321-314), A3559 (CE 1327-292), A3560, A3562,
SC 1329-314 and in the intercluster region of the core of the
supercluster, of which 367 are new measurements. We also present
accurate positions from APM and MAMA scans of the ESO/SERC Southern
Sky Survey photographic plates. We obtain new velocity dispersions and
estimate the masses of the member clusters, evaluating dynamical
models of the supercluster. The supercluster is found to be
significantly flattened. We find that for Omega_0=0.3, H_0=75km/s/Mpc,
the gravitational pull of the supercluster may account for up to 25%
of the peculiar velocity of the Local Group required to explain the
dipole anisotropy of the Cosmic Microwave Background radiation, in
which case the mass of the supercluster would be dominated by
intercluster dark matter. This fractional contribution would be
considerably higher for combinations of significantly lower values of
Omega_0 and higher values of H_0.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 80 497 Galaxy velocities
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Region ACO <VII/110> cluster name or
cluster area code (1)
10- 13 A4 --- ID Observing identifications
16- 18 I3 --- ESO ? ESO field
21- 26 A6 --- Coord APM, MAMA cat. numbers or other codes (2)
29- 30 I2 h RAh Right ascension (1950)
32- 33 I2 min RAm Right ascension (1950)
35- 38 F4.1 s RAs Right ascension (1950)
40 A1 --- DE- Declination sign
41- 42 I2 deg DEd Declination (1950)
44- 45 I2 arcmin DEm Declination (1950)
47- 48 I2 arcsec DEs Declination (1950)
49 A1 --- u_RAh Equatorial coordinate uncertainty flag
51 A1 --- Code [R:<( ] Codes for following fields (3)
53- 56 F4.1 mag Jmag ? Ptg. J mag, measured from APM survey
58- 63 I6 km/s RV Heliocentric velocities
65- 67 I3 km/s e_RV Heliocentric velocities error
69- 73 A5 --- R R value or number of lines (4)
76- 80 A5 --- Ref Code for observer or velocity reference (5)
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Note (1): Gives either the ACO <VII/110> cluster name, ordered by ascending
number, or a code for the area where the cluster is located. These
areas denote (1degree x 5min) regions (approx 1 square degree) in
which we divided the field to program the observations, and are
named by the coordinates of the NW corner.
Note (2): The APM, MAMA catalogue numbers or other codes used as source for
coordinates. Most coordinates are either from digital scans of the
SERC IIIa-J atlas, using the APM facility in Cambridge, England or
from scans of ESO/SRC R fields done with the MAMA machine at
Paris. For galaxies not found in the APM and MAMA scans, positions
are quoted from the ESO/Uppsala catalog (Lauberts 1982, <VII/34>).
Coordinates for galaxies in A3558 were measured with the Optronics
machine at ESO, Garching.
Note (3): the code has the following ,eaning:
R = m_J is R magnitude from the MAMA survey.
: = m_J is uncertain (saturated image on plate or estimated by eye)
< = m_J is an upper limit (the magnitude quoted being the total
magnitude of a merged image of which the galaxy is a part)
( = velocities are not used in the mean values of redshifts.
Note (4): The R value of the cross-correlation, or the number of lines
measured in each spectra, if the line position method was used.
The R value is a real value and the number of lines is an integer
value.
Note (5): The code of observer/telescope/date or a reference code if the
galaxy also has a velocity reported in the literature.
Q1-Q7,M1-M3: observing sessions as in Table 1 of the printed paper.
MGS87 Metcalfe et al. (1987MNRAS.225..581M)
TCG90 Teague et al. (1990ApJS...72..715T)
Da86 da Costa et al. (1986AJ.....91....6D)
Da87 da Costa et al. (1987AJ.....93.1338D)
DS88 Dressler and Shectman (1988AJ.....95..284D)
D091 Dressler 1991 <J/ApJS/75/241>
Cr87 Cristiani et al. (1987A&A...179..108C)
R087 Richter, O.-G. (1987A&AS...67..261R)
Ve90 Vettolani et al. (1990AJ.....99.1709V)
Mo88 Monk et al. (1988MNRAS.234..193M)
Mo89 Mould et al. (1989ApJ...338..654A)
PGC Paturel et al. Catalogue of Principal Galaxies, Monographies
de la Base de Donnees Extragalactiques, No 1, Lyon: Obs. de Lyon;
(Catalog <VII/119>)
1737 ZCAT Catalog, Huchra et al. 1993 <VII/164>
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Origin: AAS CD-ROM series, Volume 5, 1995 Lee Brotzman [ADS] 06-Oct-1995
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(End) [CDS] 10-Jan-1996