J/A+A/382/389 CCD R photometry of 17 clusters of galaxies (Kopylov+, 2002)
Search for streaming motion of galaxy clusters around the Giant Void
Kopylov A.I., Kopylova F.G.
<Astron. Astrophys. 382, 389 (2002)>
=2002A&A...382..389K 2002A&A...382..389K
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Photometry, CCD
Keywords: galaxies: clusters - galaxies: elliptical and lenticular, cD -
galaxies: fundamental parameters - galaxies: photometry -
galaxies: distances and redshifts -
cosmology: large-scale structure of Universe
Abstract:
We present the results of a study of streaming motion of galaxy
clusters around the Giant Void (RA∼13h, DE∼40°, z∼0.11 and a
diameter of 150/hMpc) in the distribution of rich Abell clusters. We
used the Kormendy relation as a distance indicator taking into account
galaxy luminosities. Observations were carried out in Kron-Cousins
Rc system on the 6m and 1m telescopes of SAO RAS. For 17 clusters in
a spherical shell of 25/hMpc in thickness centered on the void no
significant diverging motion (expected to be generated by the mass
deficit in the void) has been detected. This implies that cosmological
models with low Ωm are preferred. To explain small mass
underdensity inside the Giant Void, a mechanism of void formation with
strong biasing is required.
Description:
Photometric parameters for 210 early-type galaxies in the central
regions for 17 clusters around the Giant Void are presented. Galaxies
in the following clusters have been observed:
A1298, A1361, A1427, A1468, A1542, A1551, A1609, A1637, A1666,
A1691, A1700, A1739, A1793, A1823, A1834, A1885, and A1894.
For each galaxy equatorial coordinates, total magnitudes in Rc
(Kron-Cousins) band, effective radius, surface brightness and mean
surface brightness are given. The derivation of the effective
parameters takes the seeing into account.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
clusters.dat 45 17 Cluster positions and magnitudes (from Simbad)
table2.dat 57 210 Photometric parameters for 210 galaxies
in 17 clusters
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See also:
J/PAZh/27/403 : CCD R photometry in the UMa supercluster (Kopylova+, 2001)
Byte-by-byte Description of file: clusters.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Abell Abell (ACO) cluster number
7- 8 I2 h RAh Right ascension (J2000.0)
10- 11 I2 min RAm Right ascension (J2000.0)
13- 16 F4.1 s RAs Right ascension (J2000.0)
18 A1 --- DE- Declination sign (J2000.0)
19- 20 I2 deg DEd Declination (J2000.0)
22- 23 I2 arcmin DEm Declination (J2000.0)
25- 26 I2 arcsec DEs Declination (J2000.0)
29- 45 A17 --- Names Other name (1)
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Note (1): We identify the cluster ACO 1666 with ZwCl J1303.7+5118 as the
Abell cluster coordinates (J1302.8+5153) none rich cluster was found.
Coordinates refer to the main concentration of galaxies.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
-----------------------------------------------------------------------------
1- 4 I4 --- Abell Abell (ACO) cluster number
6- 7 I2 --- Galaxy Galaxy identification number
9- 10 I2 h RAh Right Ascension J2000 (hours)
12- 13 I2 min RAm Right Ascension J2000 (minutes)
15- 19 F5.2 s RAs Right Ascension J2000 (seconds)
21 A1 --- DE- Declination J2000 (sign)
22- 23 I2 deg DEd Declination J2000 (degrees)
25- 26 I2 arcmin DEm Declination J2000 (minutes)
28- 31 F4.1 arcsec DEs Declination J2000 (seconds)
33- 37 F5.2 mag Rcmag Asymptotic Kron-Cousins Rc band
magnitude corrected for Galactic
extinction (1)
39- 43 F5.2 arcsec reff Seeing corrected effective radius (2)
45- 49 F5.2 mag/arcsec2 mue Seeing corrected surface
brightness at reff (1), (2)
51- 55 F5.2 mag/arcsec2 Seeing corrected mean surface
brightness within reff (1), (2)
57 I1 --- ExclFlag [1,3]? Exclusion flag (3)
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Note (1): Correction for foreground Galactic extinction according to Schlegel
et al. (1998ApJ...500..525S 1998ApJ...500..525S) corresponds to the centre of cluster
Note (2): Correction for seeing effect following Saglia et al.
(1993MNRAS.264..961S 1993MNRAS.264..961S)
Note (3): 33 galaxies excluded from the distance determination:
1 = fainter than MR~-21.5mag
2 = disk dominated
3 = peculiar or interacting
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Acknowledgements: Alexander Kopylov
References:
Kopylova & Kopylov, 1998PAZh...24..573K 1998PAZh...24..573K, (1998AstL...24..491K 1998AstL...24..491K)
Structure and dynamic state of the Corona Borealis supercluster
(End) Alexander Kopylov [SAO, Russia] 06-Feb-2002