The Ophiuchus cluster and a large-scale structure towards the galactic centre

K. Wakamatsu; M. A. Malkan; M. T. Nishida; Quentin A. Parker; W. Saunders; F. G. Watson

The Ophiuchus cluster and a large-scale structure towards the galactic centre

K. Wakamatsu, M. A. Malkan, M. T. Nishida, Quentin A. Parker, W. Saunders, F. G. Watson

Department of Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

Abstract

The Ophiuchus Cluster is one of the most luminous X-ray clusters in the local Universe, and may be a key cluster for the local large-scale structure. Our preliminary redshift-survey with FLAIR and 6dF for the cluster shows the following: 1) a velocity dispersion of the Ophiuchus cluster is found to be 1050 ± 50 km s−1, which is consistent with its large X-ray luminosity, 2) the cluster accompanies several clusters and groups of galaxies within a distance of 8° from the cluster centre, implying that it is a large and massive enough to be classified as a supercluster, 3) from its closeness to the position of the Great Attractor in the sky, the Ophiuchus Supercluster may play some role in its gravitational potential, as may the Shapley Concentration, and 4) there is an extensive foreground void up to cz ≈ 4000 km s−1 in the survey area, implying that it is a continuation of the Local Void.

Original language	English
Title of host publication	Astronomical Society of the Pacific conference series
Subtitle of host publication	Nearby large-scale structures and the zone of avoidance
Place of Publication	Michigan, USA
Publisher	Astronomical Society of the Pacific
Pages	189-198
Number of pages	10
ISBN (Print)	1583811923
Publication status	Published - 2005
Event	Nearby Large-Scale Structures and the Zone of Avoidance - Cape Town, South Africa Duration: 28 Mar 2004 → 2 Apr 2004

Publication series

Name	ASP Conference Series
Publisher	Astronomical Society of the Pacific
Volume	329

Conference

Conference	Nearby Large-Scale Structures and the Zone of Avoidance
City	Cape Town, South Africa
Period	28/03/04 → 2/04/04

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Wakamatsu, K., Malkan, M. A., Nishida, M. T., Parker, Q. A., Saunders, W., & Watson, F. G. (2005). The Ophiuchus cluster and a large-scale structure towards the galactic centre. In Astronomical Society of the Pacific conference series: Nearby large-scale structures and the zone of avoidance (pp. 189-198). (ASP Conference Series; Vol. 329). Michigan, USA: Astronomical Society of the Pacific.

Wakamatsu, K. ; Malkan, M. A. ; Nishida, M. T. ; Parker, Quentin A. ; Saunders, W. ; Watson, F. G. / The Ophiuchus cluster and a large-scale structure towards the galactic centre. Astronomical Society of the Pacific conference series: Nearby large-scale structures and the zone of avoidance. Michigan, USA : Astronomical Society of the Pacific, 2005. pp. 189-198 (ASP Conference Series).

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title = "The Ophiuchus cluster and a large-scale structure towards the galactic centre",

abstract = "The Ophiuchus Cluster is one of the most luminous X-ray clusters in the local Universe, and may be a key cluster for the local large-scale structure. Our preliminary redshift-survey with FLAIR and 6dF for the cluster shows the following: 1) a velocity dispersion of the Ophiuchus cluster is found to be 1050 ± 50 km s−1, which is consistent with its large X-ray luminosity, 2) the cluster accompanies several clusters and groups of galaxies within a distance of 8° from the cluster centre, implying that it is a large and massive enough to be classified as a supercluster, 3) from its closeness to the position of the Great Attractor in the sky, the Ophiuchus Supercluster may play some role in its gravitational potential, as may the Shapley Concentration, and 4) there is an extensive foreground void up to cz ≈ 4000 km s−1 in the survey area, implying that it is a continuation of the Local Void.",

author = "K. Wakamatsu and Malkan, {M. A.} and Nishida, {M. T.} and Parker, {Quentin A.} and W. Saunders and Watson, {F. G.}",

year = "2005",

language = "English",

isbn = "1583811923",

series = "ASP Conference Series",

publisher = "Astronomical Society of the Pacific",

pages = "189--198",

booktitle = "Astronomical Society of the Pacific conference series",

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Wakamatsu, K, Malkan, MA, Nishida, MT, Parker, QA, Saunders, W & Watson, FG 2005, The Ophiuchus cluster and a large-scale structure towards the galactic centre. in Astronomical Society of the Pacific conference series: Nearby large-scale structures and the zone of avoidance. ASP Conference Series, vol. 329, Astronomical Society of the Pacific, Michigan, USA, pp. 189-198, Nearby Large-Scale Structures and the Zone of Avoidance, Cape Town, South Africa, 28/03/04.

The Ophiuchus cluster and a large-scale structure towards the galactic centre. / Wakamatsu, K.; Malkan, M. A.; Nishida, M. T.; Parker, Quentin A.; Saunders, W.; Watson, F. G.

Astronomical Society of the Pacific conference series: Nearby large-scale structures and the zone of avoidance. Michigan, USA : Astronomical Society of the Pacific, 2005. p. 189-198 (ASP Conference Series; Vol. 329).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

TY - GEN

T1 - The Ophiuchus cluster and a large-scale structure towards the galactic centre

AU - Wakamatsu, K.

AU - Malkan, M. A.

AU - Nishida, M. T.

AU - Parker, Quentin A.

AU - Saunders, W.

AU - Watson, F. G.

PY - 2005

Y1 - 2005

N2 - The Ophiuchus Cluster is one of the most luminous X-ray clusters in the local Universe, and may be a key cluster for the local large-scale structure. Our preliminary redshift-survey with FLAIR and 6dF for the cluster shows the following: 1) a velocity dispersion of the Ophiuchus cluster is found to be 1050 ± 50 km s−1, which is consistent with its large X-ray luminosity, 2) the cluster accompanies several clusters and groups of galaxies within a distance of 8° from the cluster centre, implying that it is a large and massive enough to be classified as a supercluster, 3) from its closeness to the position of the Great Attractor in the sky, the Ophiuchus Supercluster may play some role in its gravitational potential, as may the Shapley Concentration, and 4) there is an extensive foreground void up to cz ≈ 4000 km s−1 in the survey area, implying that it is a continuation of the Local Void.

AB - The Ophiuchus Cluster is one of the most luminous X-ray clusters in the local Universe, and may be a key cluster for the local large-scale structure. Our preliminary redshift-survey with FLAIR and 6dF for the cluster shows the following: 1) a velocity dispersion of the Ophiuchus cluster is found to be 1050 ± 50 km s−1, which is consistent with its large X-ray luminosity, 2) the cluster accompanies several clusters and groups of galaxies within a distance of 8° from the cluster centre, implying that it is a large and massive enough to be classified as a supercluster, 3) from its closeness to the position of the Great Attractor in the sky, the Ophiuchus Supercluster may play some role in its gravitational potential, as may the Shapley Concentration, and 4) there is an extensive foreground void up to cz ≈ 4000 km s−1 in the survey area, implying that it is a continuation of the Local Void.

M3 - Conference proceeding contribution

SN - 1583811923

T3 - ASP Conference Series

SP - 189

EP - 198

BT - Astronomical Society of the Pacific conference series

PB - Astronomical Society of the Pacific

CY - Michigan, USA

ER -