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}}{{cite web

| title=NASA/IPAC Extragalactic Database

| work=Results for Abell 2151

| url=http://nedwww.ipac.caltech.edu/

| access-date=2007-07-19}}

| dec = {{DEC|+17|44|55}}

| constellation = Hercules

| brightest_member = NGC 6041

| member_no = 300{{cite web

| title=National Optical Astronomy Observatory

| work=Galaxies

| url=http://www.noao.edu/image_gallery/html/im0658.html

| access-date=2007-07-19}}

| richness = 2{{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

}}

| bmtype = III

| velocity_dispersion =

| redshift = 0.03660 (10 972 km/s)

| distance = {{convert|156|Mpc|Mly|0|abbr=on|lk=on}} {{hub|0.705}}

| temperature =

| mass =

| luminosity =

| flux = (15.00 ± 12.5%){{e|-12}} erg s⁻¹ cm⁻² (0.1—2.4 keV)

| other_names = Abell 2151

}}

The Hercules Cluster (Abell 2151) is a cluster of about 200 galaxies{{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 }} some 500 million light-years distant in the constellation Hercules. It is rich in spiral galaxies and shows many interacting galaxies.{{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}} The cluster is part of the larger Hercules Supercluster, which is itself part of the much larger Great Wall super-structure.{{cite web |title=HerculesClustertext |url=http://www.robgendlerastropics.com/HerculesClustertext.html |website=www.robgendlerastropics.com |access-date=24 October 2019}}

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