Hercules Cluster

{{Short description|Galaxy cluster in the constellation Hercules}} {{About|the cluster of galaxies Abell 2151|the globular cluster of stars|Messier 13}} {{Infobox galaxy cluster | name = Hercules Cluster | image = 300px | epoch = J2000 | ra = {{RA|16|05|15.0}}<ref name="NED">{{cite web | title=NASA/IPAC Extragalactic Database | work=Results for Abell 2151 | url=http://nedwww.ipac.caltech.edu/ | access-date=2007-07-19}}</ref> | dec = {{DEC|+17|44|55}}<ref name="NED" /> | constellation = Hercules | brightest_member = NGC 6041 | member_no = 300<ref name="noao">{{cite web | title=National Optical Astronomy Observatory | work=Galaxies | url=http://www.noao.edu/image_gallery/html/im0658.html | access-date=2007-07-19}}</ref> | richness = 2<ref name="ACO">{{cite journal | last1 = Abell | first1 = George O. | author-link1 = George O. Abell | last2 = Corwin | first2 = Harold G. Jr. | author-link2 = Harold G. Corwin | last3 = Olowin | first3 = Ronald P. | author-link3 = Ronald P. Olowin |date=May 1989 | title = A catalog of rich clusters of galaxies | journal = Astrophysical Journal Supplement Series | volume = 70 | issue = May 1989 | pages = 1–138 | format = PDF | issn = 0067-0049 | bibcode = 1989ApJS...70....1A | doi = 10.1086/191333 | access-date = March 13, 2012 | url = 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 | doi-access = free }}</ref> | bmtype = III<ref name="ACO" /> | velocity_dispersion = | redshift = 0.03660 (10 972 km/s)<ref name="NED" /> | distance = {{convert|156|Mpc|Mly|0|abbr=on|lk=on}} {{hub|0.705}} <ref name="NED" /> | temperature = | mass = | luminosity = | flux = (15.00 ± 12.5%){{e|-12}} erg s<sup>−1</sup> cm<sup>−2</sup> (0.1—2.4 keV) <ref name="NED" /> | other_names = Abell 2151 }}

The '''Hercules Cluster''' (Abell 2151) is a cluster of about 200 galaxies<ref name="2mass">{{cite web|title=Two Micron All Sky Survey |work=2MASS Galaxy Science & Analysis |url=http://spider.ipac.caltech.edu/staff/jarrett/2mass/3chan/redshift/gz_cat.html |access-date=2007-08-03 |url-status=dead |archive-url=https://web.archive.org/web/20070630111346/http://spider.ipac.caltech.edu/staff/jarrett/2mass/3chan/redshift/gz_cat.html |archive-date=2007-06-30 }}</ref> some 500 million light-years distant in the constellation Hercules. It is rich in spiral galaxies and shows many interacting galaxies.<ref name="ua">{{cite web|title=University of Alabama Astronomy|work=Astronomical Image Galleries|url=http://www.astr.ua.edu/gifimages/hercules.html|access-date=2007-07-19}}</ref> The cluster is part of the larger Hercules Supercluster, which is itself part of the much larger Great Wall super-structure.<ref>{{cite web |title=HerculesClustertext |url=http://www.robgendlerastropics.com/HerculesClustertext.html |website=www.robgendlerastropics.com |access-date=24 October 2019}}</ref>

The cluster's brightest member is the giant elliptical galaxy NGC 6041.<ref>{{Cite news|url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC%206041|title=NGC 6041|access-date=2018-01-23}}</ref>

==External links== *{{APOD |date=July 19, 2007 |title=The Hercules Cluster of Galaxies}} *{{APOD |date=July 16, 2009 |title=The Hercules Cluster of Galaxies}} *[http://www.astr.ua.edu/gifimages/hercules.html Hercules Cluster] — University of Alabama * {{WikiSky|name=The Hercules Cluster|z=9}}

==References== {{reflist}}

{{DEFAULTSORT:Hercules Cluster}} Category:Hercules Cluster 2151 Category:Hercules Superclusters Category:Abell richness class 2 Category:Galaxy clusters