NGC 5866

{{Short description|Galaxy in the constellation Draco}} {{Use dmy dates|date=August 2021}} {{Infobox Galaxy | name = [[New General Catalogue|NGC]] 5866 | image = Ngc5866 hst big.png | image_size = 250px | caption = NGC 5866, as observed by the [[Hubble Space Telescope]] (HST) | epoch = [[J2000]] | ra = {{RA|15|06|29.5}}<ref name="ned">{{cite web | title=NASA/IPAC Extragalactic Database | work=Results for NGC 5866 | url=https://ned.ipac.caltech.edu/byname?objname=NGC+5866&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1 | access-date=2024-07-31}}</ref> | dec = {{DEC|+55|45|48}}<ref name="ned" /> | type = SA0+; [[Seyfert galaxy|Sy]]<ref name="ned" /><ref name=RC3>{{cite book | bibcode=1991rc3..book.....D | year=1991 | title=Third Reference Catalogue of Bright Galaxies | last1=De Vaucouleurs | first1=Gerard | last2=De Vaucouleurs | first2=Antoinette | last3=Corwin | first3=Herold G. | last4=Buta | first4=Ronald J. | last5=Paturel | first5=Georges | last6=Fouque | first6=Pascal }}</ref> | dist_ly = 50 ± 3 [[light-year|Mly]] (15.3 ± 0.7 [[parsec|Mpc]])<ref name="tonryetal2001">{{cite journal | author=J. L. Tonry | display-authors=4 | author2=A. Dressler | author3=J. P. Blakeslee | author4=E. A. Ajhar | author5=A. B. Fletcher | author6=G. A. Luppino | author7=M. R. Metzger | author8=C. B. Moore | title=The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances | journal=The Astrophysical Journal | date=2001 | volume=546 | issue=2 | pages=681–693 | bibcode=2001ApJ...546..681T | doi=10.1086/318301 |arxiv = astro-ph/0011223 | s2cid=17628238 }}</ref> | z = {{val|0.002518|0.000017}}<ref name="ned" /> | h_radial_v = {{val|755|5|u=km/s}}<ref name="ned" /> | gal_v = {{val|901|8|u=km/s}}<ref name="ned" /> | appmag_v = 9.9<ref>{{cite web |url=https://messier.seds.org/m/m102.html |title=Messier 102 |access-date=30 April 2022 |website=SEDS Messier Catalog}}</ref> | size_v = 4.7{{prime}} × 1.9{{prime}}<ref name="ned" /> | constellation name = [[Draco (constellation)|Draco]] | notes =The galaxy is viewed edge on | names = Spindle Galaxy,<ref name="simbad">{{cite simbad | title=NGC 5866 | access-date=2006-10-30}}</ref> [[Uppsala General Catalogue|UGC]] 9723,<ref name="ned" /> [[Principal Galaxies Catalogue|PGC]] 53933<ref name="ned" /> |size = {{convert|23.44|kpc|ly|-3|abbr=off|lk=on}} (diameter; [[Galaxy#Isophotal diameter|D25 isophote]]) }}

'''NGC 5866''' (also called the '''Spindle Galaxy''' or possibly '[[Messier 102]]') is a [[lenticular galaxy|lenticular]] galaxy in the [[constellation]] [[Draco (constellation)|Draco]]. NGC 5866 was most likely discovered by [[Pierre Méchain]] or [[Charles Messier]] in 1781, and independently found by [[William Herschel]] in 1788. Measured orbital velocities of its [[globular cluster]] system<ref>{{cite journal |author1=Adebusola B. Alabi |author2=Duncan A. Forbes |author3=Aaron J. Romanowsky |author4=Jean P. Brodie |author5=Jay Strader |author6=Joachim Janz |author7=Christopher Usher |author8=Lee R. Spitler |author9=Sabine Bellstedt |author10=Anna Ferre-Mateu |title=The SLUGGS survey: the mass distribution in early-type galaxies within five effective radii and beyond |journal=Monthly Notices of the Royal Astronomical Society |volume=460 |issue=4 |date=2016-05-20 |pages=3838–3860 |doi=10.1093/mnras/stw1213 |doi-access=free |arxiv = 1605.06101 |bibcode = 2016MNRAS.460.3838A |s2cid=55054073 }}</ref> imply that [[dark matter]] makes up only {{value|34|45|u=%}} of the mass within 5 [[Galaxy effective radius|effective radii]], a notable paucity.

==Dust lane== One of the most outstanding features of NGC 5866 is the extended dust disk, which is seen almost exactly edge-on.<ref>{{Cite web|last=Plait|first=Phil|date=2019-05-17|title=NGC 5866, an edge-on galaxy, shows off its spectacular dust lane|url=https://www.syfy.com/syfywire/ngc-5866-an-edge-on-galaxy-shows-off-its-spectacular-dust-lane|access-date=2020-07-17|website=SYFY WIRE|language=en}}</ref> This [[dust lane]] is highly unusual for a [[lenticular galaxy]]. The dust in most lenticular galaxies is generally found only near the nucleus and generally follows the light profile of the galaxies' bulges.<ref name="bendoetal2002">{{cite journal | author=G. J. Bendo | display-authors=4 | author2=R. D. Joseph | author3=M. Wells | author4=P. Gallais | author5= M. Haas | author6= A. M. Heras | author7= U. Klaas | author8= R. J. Laureijs | author9= K. Leech | author10= D. Lemke | author11= L. Metcalfe | author12= M. Rowan-Robinson | author13= B. Schulz | author14= C. Telesco | title=An Infrared Space Observatory Atlas of Bright Spiral Galaxies | journal=Astronomical Journal | date=2002 | volume=123 | issue=6 | pages=3067–3107 | bibcode=2002AJ....123.3067B | doi=10.1086/340083 | doi-access=free }}</ref><ref name="xilourisetal2002">{{cite journal | author=E. M. Xilouris | display-authors=4 | author2=S. C. Madden | author3=F. Galliano | author4=L. Vigroux | author5=M. Sauvage | title=Dust emission in early-type galaxies: The mid-infrared view | journal=Astronomy & Astrophysics | date=2004 | volume=416 | issue=1 | pages=41–55 | bibcode=2004A&A...416...41X | doi=10.1051/0004-6361:20034020|arxiv = astro-ph/0312029 | s2cid=12635736 }}</ref> This dust disk may contain a ring-like structure, although the shape of this structure is difficult to determine given the edge-on orientation of the galaxy.<ref name="xilourisetal2002" /> It is also possible that the galaxy is a [[spiral galaxy]] that was misclassified as a lenticular galaxy because of its edge-on orientation, in which case the dust lane would not be too unusual.<ref name="bendoetal2002" />

==Galaxy group information== NGC 5866 is one of the brightest galaxies in the [[NGC 5866 Group]], a small [[galaxy group]] that also includes the [[spiral galaxies]] [[NGC 5879]] and [[NGC 5907]].<ref name="nbg">{{cite book | author=R. B. Tully | date=1988 | title=Nearby Galaxies Catalog | publisher=[[Cambridge University Press]] | location=Cambridge | isbn=978-0-521-35299-4}}</ref><ref name="garcia1993">{{cite journal | author=Af. Garcia | title=General study of group membership. II – Determination of nearby groups | journal=Astronomy and Astrophysics Supplement | date=1993 | volume=100 | pages=47–90 | bibcode=1993A&AS..100...47G}}</ref><ref name="giuricinetal2002">{{cite journal | author=G. Giuricin | author2=C. Marinoni | author3=L. Ceriani | author4=A. Pisani | title=Nearby Optical Galaxies: Selection of the Sample and Identification of Groups | journal=The Astrophysical Journal | date=2000 | volume=543 | issue=1 | pages=178–194 | bibcode=2000ApJ...543..178G | doi=10.1086/317070 |arxiv = astro-ph/0001140 | s2cid=9618325 }}</ref> This group may actually be a subclump at the northwest end of a large, elongated structure that comprises the [[M51 Group]] and the [[M101 Group]], although most sources distinguish the three groups as separate entities.<ref name="ferrareseetal00">{{cite journal | author=L. Ferrarese | display-authors=4 | author2=H. C. Ford | author3=J. Huchra | author4=R. C. Kennicutt Jr. | author5=J. R. Mould | author6=S. Sakai | author7=W. L. Freedman | author8=P. B. Stetson | author9=B. F. Madore | author10=B. K. Gibson | author11=J. A. Graham | author12=S. M. Hughes | author13=G. D. Illingworth | author14=D. D. Kelson | author15=L. Macri | author16= K. Sebo | author17= N. A. Silbermann | title=A Database of Cepheid Distance Moduli and Tip of the Red Giant Branch, Globular Cluster Luminosity Function, Planetary Nebula Luminosity Function, and Surface Brightness Fluctuation Data Useful for Distance Determinations | journal=Astrophysical Journal Supplement | date=2000 | volume=128 | issue=2 | pages=431–459 | bibcode=2000ApJS..128..431F | doi=10.1086/313391 |arxiv = astro-ph/9910501 | s2cid=121612286 }}</ref>

==See also== * [[List of Messier objects]] *[[NGC 3115]] – ''another lenticular galaxy referred to as the Spindle Galaxy'' *[[NGC 4710]] – ''another lenticular galaxy viewed edge-on''

==References== {{reflist}}

==External links== {{commons category}} {{WikiSky}} *[http://messier.seds.org/m/m102.html SEDS Messier pages: NGC 5866] *[http://www.spacetelescope.org/bin/images.pl?embargo=0&viewtype=standard&searchtype=freesearch&lang=en&string=5866 NGC 5866 at ESA/Hubble] {{Webarchive|url=https://web.archive.org/web/20070927184542/http://www.spacetelescope.org/bin/images.pl?embargo=0&viewtype=standard&searchtype=freesearch&lang=en&string=5866 |date=27 September 2007 }} *[https://web.archive.org/web/20090610215647/http://www.dsi-astronomie.de/NGC5866_2008.html NGC5866 ]

[[Category:Lenticular galaxies]] [[Category:NGC 5866 Group]] [[Category:Draco (constellation)]] [[Category:NGC objects|5866]] [[Category:UGC objects|09728]] [[Category:Principal Galaxies Catalogue objects|58933]] [[Category:Astronomical objects discovered in 1781]] [[Category:Astronomical objects discovered in 1788]]