NGC 5746
{{Short description|Spiral galaxy in the constellation Virgo}}
{{Sky|14|44|55.918|+|01|57|18.011}}
{{Infobox galaxy
| name = NGC 5746
| constellation name = Virgo
| image =NGC5746 by Goran Nilsson & The Liverpool Telescope.jpg
| caption = NGC 5746 imaged by the Liverpool Telescope
| epoch = J2000
| ra = {{RA|14|44|55.918}}{{cite web
| title=NASA/IPAC Extragalactic Database
| work=Results for NGC 5746
| url=https://ned.ipac.caltech.edu/byname?objname=NGC+5746
| access-date=2024-09-08 }}
| dist_ly = 99 Mly{{cite web | url=https://edd.ifa.hawaii.edu/get_results_pgc.php?pgc=52665 | title=Best distance estimate from Cosmic Flows 3 Individual Galaxy Info for UGC09499 | website=NASA/IPAC Extragalactic Database | publisher=California Institute of Technology | access-date=2 October 2021}}
| group_cluster = NGC 5746 Group (LGG 386)
| size_v = 7.4{{prime}} × 1{{prime}}.
| size=~{{convert|59.56|kpc|ly|abbr=on|lk=on|order=flip}} (estimated)
| notes =
| names = {{ odlist | IRAS= 14424+0209 | MCG= +00-38-005 | CGCG= 020-012 | UGC= 9499 | PGC= 52665}}
}}
NGC 5746 (also known as the Mini Sombrero Galaxy{{cite web | title=Interactive Star Charts, Planets, Meteors, Comets, Telescopes | website=Astronomy Magazine | date=2022-06-27 | url=https://cs.astronomy.com/asy/m/galaxies/490815.aspx | access-date=2024-06-10}}{{cite book|last1=Stoyan|first1=Ronald|last2=Schurig|first2=Stephan|title=interstellarum Deep Sky Atlas|publisher=Cambridge University Press; Oculum-Verlag GmbH|publication-place=Erlangen|date=2014|isbn=978-1-107-50338-0|oclc=920437579|url=http://www.deep-sky-atlas.com/}}) is a barred spiral galaxy located in the eastern part of the constellation of Virgo. It was discovered on 24 February 1786 by German-British astronomer William Herschel.{{cite web | url = https://cseligman.com/text/atlas/ngc57.htm#5746 | title = New General Catalogue Objects: NGC{{nbsp}}5746 | last = Seligman | first = Courtney | website = Celestial Atlas | access-date = 8 September 2024 }} It is the lead member of the NGC 5746 Group of galaxies (also known as LGG 386), itself one of the Virgo III Groups strung out to the east of the Virgo Supercluster of galaxies.{{cite web | title=The Virgo III Groups |work=Atlas of the Universe |url=http://www.atlasoftheuniverse.com/galgrps/viriii.html |access-date=2010-11-27 }}
Characteristics
NGC 5746 is located at a distance of 99 million light years{{cite web
|title=Best of AOP: NGC 5746.
|publisher=NOAO
|url=http://www.noao.edu/outreach/aop/observers/n5746.html
|access-date=2013-02-21}} and is seen nearly edge-on, bearing a strong resemblance with the galaxy NGC 4565, that is also seen nearly edge-on.
File:NGC 5746 HST 814 555.jpg]]
As with the former, it has a box-shaped bulge that is actually a bar seen from one side and a currently modest star formation activity.{{cite journal |last1=Rasmussen |first1=Jesper |last2=Sommer-Larsen |first2=Jesper |last3=Pedersen |first3=Kristian |last4=Toft |first4=Sune |last5=Benson |first5=Andrew |last6=Bower |first6=Richard G. |last7=Grove |first7=Lisbeth F. |title=Hot gas halos around disk galaxies: Confronting cosmological simulations with observations |journal=The Astrophysical Journal |date=20 May 2009 |volume=697 |issue=1 |pages=79–93 |doi=10.1088/0004-637X/697/1/79|arxiv=0903.0665 |bibcode=2009ApJ...697...79R }}
Investigations with the help of the x-ray space telescope Chandra seemed to detect a large cloud of gas surrounding NGC 5746 that was thought to be remnant gas of its formation in the process of being accreted;{{Cite journal
| last1 = Pedersen
| first1 = K.
| last2 = Sommer-Larsen
| display-authors = 4
| first2 = J.
| last3 = Rasmussen
| first3 = J.
| last4 = Toft
| first4 = S.
| last5 = Benson
| first5 = A.
| last6 = Bower
| first6 = R. G.
| date = May 2006
| journal = New Astronomy
| volume = 11
| issue = 7
| pages = 465–470
| title = Discovery of a very extended X-ray halo around a quiescent spiral galaxy The "missing link" of galaxy formation
|arxiv = astro-ph/0511682 |bibcode = 2006NewA...11..465P |doi = 10.1016/j.newast.2005.11.004 | s2cid = 53473787
}} however, later research has shown that cloud does not actually exist.{{Cite journal
| last1 = Pedersen
| first1 = K.
| last2 = Sommer-Larsen
| display-authors = 4
| first2 = J.
| last3 = Rasmussen
| first3 = J.
| last4 = Toft
| first4 = S.
| last5 = Benson
| first5 = A.
| last6 = Bower
| first6 = R. G.
| year = 2009
| journal = The Astrophysical Journal
| volume = 697
| issue = 1
| pages = 79–93
| title = Hot Gas Halos Around Disk Galaxies: Confronting Cosmological Simulations with Observations
| doi=10.1088/0004-637x/697/1/79
| bibcode=2009ApJ...697...79R|arxiv = 0903.0665 | s2cid = 17934428
}}
Seen in the infrared, NGC 5746 also shows two pseudobulges, one nested within the other – that coincides with its central bar – as well as an inner ring with a radius of 9.1 kiloparsecs and a width of 1.6 kiloparsecs.{{Cite journal
| last1 = Barentine
| first1 = J. C.
| last2 = Kormendy
| first2 = J.
| date = August 2012
| journal = The Astrophysical Journal
| volume = 754
| issue = 2, article id 140
| title = Two Pseudobulges in the "Boxy Bulge" Galaxy NGC 5746
| doi = 10.1088/0004-637X/754/2/140
| bibcode = 2012ApJ...754..140B|arxiv = 1205.6876
| pages=140| s2cid = 119298870
}}
One supernova has been observed in NGC 5746: SN 1983P (type Ia, mag. 13) was discovered by Nunes, Pellegreni, et al. on 11 July 1983.{{cite journal | bibcode = 1983IAUC.3841....1P| title = Supernovae| last1 = Pellegrini| first1 = P. S.| last2 = Nunes| first2 = M.| last3 = Da Costa| first3 = L. N.| last4 = Latham| first4 = D.| last5 = Evans| first5 = R.| last6 = Langhans| first6 = T.| last7 = Mattei| first7 = J.| journal = International Astronomical Union Circular| date = 1983| issue = 3841| page = 1}}{{cite web | website=Transient Name Server | title=SN{{nbsp}}1983P | url=https://www.wis-tns.org/object/1983P | publisher = IAU | access-date=8 September 2024}}
See also
References
{{reflist}}
External links
- {{commonscat inline}}
{{Ngc60}}
{{Virgo (constellation)}}
{{DEFAULTSORT:NGC 5746}}
Category:Barred spiral galaxies