Hydra Cluster

Short description: Galaxy cluster in the constellation Hydra

Not to be confused with Abell 732 (CL0855+0321) or the Hydra-Centaurus Supercluster

Hydra Cluster

Abell 1060 (Hydra Cluster) as seen from Earth. Unrelated objects have been edited out.

Observation data (Epoch J2000)
Constellation(s)| Hydra
Right ascension|  09h 18.0m[1]
Declination| −12° 05′[1]
Number of galaxies| 157[2]
Richness class| 1[3]
Bautz–Morgan classification| III[3]
Redshift| 0.0548 (16,452 km/s)[1]
Distance
(co-moving)| 58.3 Mpc (190.1 Mly) h−10.705
X-ray flux| 6.1×10−11 erg s−1 cm−2 (0.5–2 keV)[1]
Other designations
Abell 1060
See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters

The Hydra Cluster (or Abell 1060) is a galaxy cluster that contains 157 bright galaxies, appearing in the constellation Hydra.[4] The cluster spans about ten million light-years and has an unusually high proportion of dark matter.[5] The cluster is part of the Hydra-Centaurus Supercluster located 158 million light-years from Earth. The cluster's largest galaxies are elliptical galaxies NGC 3309 and NGC 3311 and the spiral galaxy NGC 3312 all having a diameter of about 150,000 light-years.[6] In spite of a nearly circular appearance on the sky, there is evidence in the galaxy velocities for a clumpy, three-dimensional distribution.[7]

A map of Hydra cluster

## References

1. ↑ 1.0 1.1 1.2 1.3 "NASA/IPAC Extragalactic Database". Results for Abell 2151. http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=Hydra+A&extend=no. Retrieved 13 June 2013.
2. ↑ "National Optical Astronomy Observatory". Galaxies. http://www.noao.edu/image_gallery/html/im0658.html. Retrieved 19 July 2007.
3. ↑ 3.0 3.1 Abell, George O.; Corwin, Harold G., Jr.; Olowin, Ronald P. (May 1989). "A catalog of rich clusters of galaxies" (PDF). Astrophysical Journal Supplement Series 70 (May 1989): 1–138. doi:10.1086/191333. ISSN 0067-0049. Bibcode: 1989ApJS...70....1A. http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=1989ApJS...70....1A&page_ind=0&epage_ind=137&type=PRINTER&data_type=PDF_HIGH&email=&emailsize=500&emailsplit=YES&send=GET&verified=YES. Retrieved 12 March 2012.
4. ↑ Wehner and Harris, p.1
5. ↑ Nemiroff, R.; Bonnell, J., eds (16 April 2001). "The Hydra Cluster of Galaxies". Astronomy Picture of the Day. NASA. https://apod.nasa.gov/apod/ap010416.html.
6. ↑ The Hydra Supercluster An Atlas of the Universe.com
7. ↑ The Astrophysical Journal 335: 18–34. December 1988. doi:10.1086/166902. Bibcode: 1988ApJ...335...18F.

## Related reading

* Wehner, Elizabeth M. H. and Harris, William E. (10 August 2006) UCD candidates in the Hydra Cluster . ArXiv.org. ApL Letters
*   * The Hydra Cluster on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Coordinates:  10h 36.9m 00s, −27° 32′ 00″

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Astronomical catalogs

Abell|

* Astronomy:Abell 1055
* Astronomy:Abell 1056
* Astronomy:Abell 1057
* Astronomy:Abell 1058
* Astronomy:Abell 1059
* Abell 1060
* Astronomy:Abell 1061
* Astronomy:Abell 1062
* Astronomy:Abell 1063
* Astronomy:Abell 1064
* Astronomy:Abell 1065

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Galaxies

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Structure|

* Active galactic nucleus
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* Low surface brightness
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See also|

* Extragalactic astronomy
* Galactic astronomy
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* Galactic empire
* Galactic habitable zone
* Galactic magnetic fields
* Galactic orientation
* Galactic quadrant
* Galaxy color–magnitude diagram
* Galaxy formation and evolution
* Galaxy rotation curve
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