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The Large Scale Distribution of Galaxies in the Shapley Supercluster

Published online by Cambridge University Press:  05 March 2013

Michael J. Drinkwater ,
Quentin A. Parker ,
Dominique Proust ,
Eric Slezak  and
Hernán Quintana
Michael J. Drinkwater
Affiliation:
Department of Physics, University of Queensland, QLD 4072, Australia. (e-mail: mjd@physics.uq.edu.au)
Quentin A. Parker
Affiliation:
Department of Physics, Macquarie University, NSW 2109, Australia. Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia. (e-mail: qap@ics.mq.edu.au)
Dominique Proust
Affiliation:
GEPI — Observatoire de Paris–Meudon, 92195 Meudon CEDEX, France. (e-mail: Dominique.Proust@obspm.fr)
Eric Slezak
Affiliation:
Observatoire de Nice, 06304 Nice CEDEX4, France. (e-mail: Slezak@obs-nice.fr)
Hernán Quintana
Affiliation:
Departamento de Astronomia y Astrofisica, Pontificia Universidad Católica de Chile, Casilla 104, Santiago 22, Chile. (e-mail: hquintan@astro.puc.cl
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Abstract

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We present new results of our wide-field redshift survey of galaxies in a 182 square degree region of the Shapley Supercluster (SSC) based on observations with the FLAIR-II spectrograph on the UK Schmidt Telescope (UKST). In this paper we present new measurements to give a total sample of redshifts for 710 bright (R ≤ 16.6) galaxies, of which 464 are members of the SSC (8000 < v < 18 000 km s–1). Our data reveal that the main plane of the SSC (v ≈ 14 500 km s–1) extends further than previously realised, filling the whole extent of our survey region of 10 degrees by 20 degrees on the sky (35 Mpc by 70 Mpc, for H0 = 75 km s–1 Mpc–1). There is also a significant structure associated with the slightly nearer Abell 3571 cluster complex (v ≈ 12 000 km s–1) with a caustic structure evident out to a radius of 6 Mpc. These galaxies seem to link two previously identified sheets of galaxies and establish a connection with a third one at V (V) = 15 000 km s–1 near RA = 13h. They also tend to fill the gap of galaxies between the foreground Hydra-Centaurus region and the more distant SSC. We calculate galaxy overdensities of 5.0 ± 0.1 over the 182 square degree region surveyed and 3.3 ± 0.1 in a 159 square degree region excluding rich clusters. Over the large region of our survey the inter-cluster galaxies make up 46 per cent of all galaxies in the SSC region and may contribute a similar amount of mass to the cluster galaxies.

Keywords

Redshifts of galaxiesclusters of galaxiessubclustering
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 21 , Issue 1 , 2004 , pp. 89 - 96
Copyright
Copyright © Astronomical Society of Australia 2004

References

Bardelli, S., Zucca, E., Zamorani, G., Moscardini, L., & Scaramella, R. 2000, MNRAS, 312, 540 CrossRefGoogle Scholar
Bardelli, S., Zucca, E., & Baldi, A. 2001, MNRAS, 320, 387 Google Scholar
Dickey, J. M., Keller, D. T., Pennington, R., & Salpeter, E. E. 1987, AJ, 93, 788 Google Scholar
Drinkwater, M. J., Currie, M. J., Young, C. K., Hardy, E., & Yearsley, J. M. 1996, MNRAS, 279, 595 Google Scholar
Drinkwater, M. J., Proust, D., Parker, Q. A., Quintana, H., & Slezak, E. 1999, PASA, 16, 113 (D99)CrossRefGoogle Scholar
Guibert, J., & Moreau, O. 1991, The Messenger, 64, 69 Google Scholar
Hambly, N. C., et al. 2001a, MNRAS, 326, 1279 Google Scholar
Hambly, N. C., Irwin, M. J., & MacGillivray, H. T. 2001b, MNRAS, 326, 1295 CrossRefGoogle Scholar
Hambly, N. C., Davenhall, A. C., Irwin, M. J., & MacGillivray, H. T. 2001c, MNRAS, 326, 1315 Google Scholar
Heydon-Dumbleton, N. H., Collins, C. A., & MacGillivray, H. T. 1989, MNRAS, 238, 379 Google Scholar
Kaldare, R., Colless, M., Raychaudhury, S., & Peterson, B. A. 2003, MNRAS, 339, 652 Google Scholar
Kraan-Korteweg, R. C., Woudt, P. A., Cayatte, V., Fairall, A. P., Balkowski, C., & Henning, P. A. 1996, Nature, 379, 519 Google Scholar
Kurtz, M. J., & Mink, D. J. 1998, PASP, 110, 943 Google Scholar
Metcalfe, N., Shanks, T., Fong, R., & Jones, L. R. 1991, MNRAS, 249, 498 Google Scholar
Moreau, O. 1992, PhD thesis, Université Paris, 7 Google Scholar
Parker, Q. A., & Watson, F. G. 1995, in 35th Herstmonceux Conf., Wide Field Spectroscopy and the Distant Universe, eds. S. J. Maddox, & A. Aragon-Salamanca (Singapore: World Scientific), 33 Google Scholar
Parker, Q. A. 1997, in Proc. 2nd Conf. of the Working Group of IAU Commission 9 on Wide-Field Imaging, Wide-Field Spectroscopy, eds. E. Kontizas, M. Kontizas, D. H. Morgan, & G. P. Vettolani (Dordrecht: Kluwer Academic Publishers), 25 Google Scholar
Quintana, H., Ramirez, A., Melnick, J., Raychaudhury, S., & Slezak, E. 1995, AJ, 110, 463 CrossRefGoogle Scholar
Quintana, H., Carrasco, E. R., & Reisenegger, A. 2000, AJ, 120, 511 Google Scholar
Raychaudhury, S. 1989, Nature, 342, 251 Google Scholar
Reisenegger, A., Quintana, H., Carrasco, E. R., & Maze, J. 2000, AJ, 120, 523 Google Scholar
Scaramella, R., Baiesi-Pillastrini, G., Chincarini, G., Vettolani, G., & Zamorani, G. 1989, Nature, 338, 562 Google Scholar
Smoot, G., et al. 1992, ApJ, 396, L1 Google Scholar
Tody, D. 1993, in ASP Conf. Ser. 52, Astronomical Data Analysis Software and Systems II, eds. R. J. Hanisch, R. J. V. Brissenden, & J. Barnes (San Francisco: ASP), 173 Google Scholar
Tully, R. B., Scaramella, R., Vettolani, G., & Zamorani, G. 1992, ApJ, 388, 9 Google Scholar
Watson, F. G., Parker, Q. A., Bogatu, G., Farrell, T. J., Hingley, B. E., & Miziarski, S. 2000, in Optical and IR Telescope Instrumentation and Detectors, Proc. SPIE, Vol. 4008, eds. I. Masanori, & A. F. Moorwood (Bellingham: SPIE), 123 Google Scholar