NGC 759
{{Short description|Galaxy in the constellation Andromeda}}
{{Infobox Galaxy
| name = NGC 759
| image = 2MASS NGC 759.jpg
| upright = 1.15
|caption= 2MASS image of NGC 759.
| constellation name = Andromeda
| epoch = J2000
| type = E{{cite web
| title=NASA/IPAC Extragalactic Database
| work=Results for NGC 759
| url=http://nedwww.ipac.caltech.edu/
| access-date=2019-01-06}}
| dist_ly = {{convert|70.4|Mpc|Mly|abbr=on|lk=on|order=flip}}
| group_cluster = Abell 262
|size=~{{convert|33|kpc|ly|abbr=on|lk=on|order=flip}} (estimated)
| names = MCG 6-5-67, PGC 7397, UGC 1440
}}
NGC 759 is an elliptical galaxy located 230 million light-years away{{Cite web|url=http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+759&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES|title=Your NED Search Results|website=ned.ipac.caltech.edu|access-date=2019-01-08}} in the constellation Andromeda. NGC 759 was discovered by astronomer by Heinrich d'Arrest on September 17, 1865.{{Cite web|url=https://cseligman.com/text/atlas/ngc7a.htm#759|title=New General Catalog Objects: NGC 750 – 799|website=cseligman.com|access-date=2019-01-03}} It is a member of Abell 262.{{Cite journal|last1=Giuricin|first1=G.|last2=Marinoni|first2=C.|last3=Ceriani|first3=L.|last4=Pisani|first4=A.|date=November 2000|title=Nearby Optical Galaxies: Selection of the Sample and Identification of Groups|journal=The Astrophysical Journal|volume=543|issue=1|pages=178–194|doi=10.1086/317070|issn=0004-637X|arxiv=astro-ph/0001140|bibcode=2000ApJ...543..178G|s2cid=9618325}}{{Cite journal|last=Garcia|first=A. M.|date=1993-07-01|title=General study of group membership. II – Determination of nearby groups|journal=Astronomy and Astrophysics Supplement Series|volume=100|pages=47–90|issn=0365-0138|bibcode=1993A&AS..100...47G}}{{Cite journal|last1=Fouque|first1=P.|last2=Gourgoulhon|first2=E.|last3=Chamaraux|first3=P.|last4=Paturel|first4=G.|date=1992-05-01|title=Groups of galaxies within 80 Mpc. II – The catalogue of groups and group members|journal=Astronomy and Astrophysics Supplement Series|volume=93|pages=211–233|issn=0365-0138|bibcode=1992A&AS...93..211F}}{{Cite web|url=http://simbad.u-strasbg.fr/simbad/|title=NGC 759|website=simbad|access-date=2019-01-08}}{{Cite web|url=http://ned.ipac.caltech.edu/cgi-bin/NEDatt?objname=NGC+0759|title=Detailed Object Classifications|website=ned.ipac.caltech.edu|access-date=2019-01-08}}
Despite being classified as a radio galaxy,{{Cite journal|last1=Righetti|first1=G.|last2=Giovannini|first2=G.|last3=Feretti|first3=L.|date=1988-04-01|title=WSRT observations at 327 MHz of the cluster A262|journal=Astronomy and Astrophysics Supplement Series|volume=73|pages=173–179|issn=0365-0138|bibcode=1988A&AS...73..173R}}{{Cite journal|last1=Zhao|first1=Jun-Hui|last2=Burns|first2=Jack O.|last3=Owen|first3=Frazer N.|date=1989-07-01|title=A 20 CM VLA survey of Abell clusters of galaxies. I – Distance class of not greater than 3 clusters|journal=The Astronomical Journal|volume=98|pages=64–107|doi=10.1086/115128|issn=0004-6256|bibcode=1989AJ.....98...64Z|doi-access=free}}{{Cite journal|last1=Miller|first1=Neal A.|last2=Owen|first2=Frazer N.|date=2001-06-01|title=The Radio Galaxy Populations of Nearby Northern Abell Clusters|journal=The Astrophysical Journal Supplement Series|volume=134|issue=2|pages=355–383|doi=10.1086/320857|issn=0067-0049|bibcode=2001ApJS..134..355M|arxiv=astro-ph/0101114|s2cid=119052072}}{{Cite journal|last1=Feretti|first1=L.|last2=Giovannini|first2=G.|date=1994-01-01|title=Structures of small-size radio galaxies in clusters|journal=Astronomy and Astrophysics|volume=281|pages=375–387|issn=0004-6361|bibcode=1994A&A...281..375F}}{{Cite journal|last1=Vila-Vilaró|first1=B.|last2=Cepa|first2=J.|last3=Butner|first3=H. M.|date=2003-09-01|title=CO (3–2) Observations of Early-Type Galaxies with the Heinrich Hertz Telescope|journal=The Astrophysical Journal|volume=594|issue=1|pages=232–246|doi=10.1086/376775|issn=0004-637X|bibcode=2003ApJ...594..232V|doi-access=free}} the radio emission in NGC 759 could be due to star formation rather than an active galactic nucleus.
Dust disk
The central region of NGC 759 harbors a face-on dust disk with tightly wound spiral structure. The disk has a diameter of {{convert|3.4|kpc|ly|abbr=on|lk=on|order=flip}}.{{Cite journal|last1=Wegner|first1=G. A.|last2=Corsini|first2=E. M.|last3=Thomas|first3=J.|last4=Saglia|first4=R. P.|last5=Bender|first5=R.|last6=Pu|first6=S. B.|date=2012|title=Further Evidence for Large Central Mass-to-light Ratios in Early-type Galaxies: The Case of Ellipticals and Lenticulars in the A262 Cluster|url=http://stacks.iop.org/1538-3881/144/i=3/a=78|journal=The Astronomical Journal|language=en|volume=144|issue=3|pages=78|doi=10.1088/0004-6256/144/3/78|issn=1538-3881|bibcode=2012AJ....144...78W|arxiv=1206.5768|hdl=11577/2526313 |s2cid=118679035}} The dust disk also contains a smaller circumnuclear molecular gas ring that has star formation in H II regions.{{Cite journal|last1=Wiklind|first1=T.|last2=Combes|first2=F.|last3=Henkel|first3=C.|last4=Wyrowski|first4=F.|date=1997-07-01|title=Molecular gas in the elliptical galaxy NGC 759. Interferometric CO observations.|journal=Astronomy and Astrophysics|volume=323|pages=727–738|issn=0004-6361|bibcode=1997A&A...323..727W|arxiv=astro-ph/9702080}}{{Cite journal|last1=Vlasyuk|first1=V. V.|last2=Sil'chenko|first2=O. K.|date=2000-02-01|title=NGC 759: A giant elliptical with a just-forming decoupled nucleus|journal=Astronomy and Astrophysics|volume=354|pages=28–34|issn=0004-6361|bibcode=2000A&A...354...28V}} These features may be the result of a merger of gas-rich disk galaxies{{Cite journal|last1=Leeuw|first1=Lerothodi L.|last2=Davidson|first2=Jacqueline|last3=Dowell|first3=C. Darren|last4=Matthews|first4=Henry E.|date=2008|title=Spatially Resolved Imaging at 350 μm of Cold Dust in Nearby Elliptical Galaxies|url=http://stacks.iop.org/0004-637X/677/i=1/a=249|journal=The Astrophysical Journal|language=en|volume=677|issue=1|pages=249|doi=10.1086/528838|issn=0004-637X|bibcode=2008ApJ...677..249L|arxiv=0801.0591|s2cid=14316328}} or by the accretion of gas-rich material. In either scenario, the gas would have lost momentum and fallen to the center of the galaxy to produce the disk and current star formation. However, Vlasyuk et al. suggests that the disk and the smaller circumnuclear molecular gas ring with star formation inside the main disk formed from a tidal encounter between NGC 759 and a large spiral galaxy which was accompanied by a substantial gas accretion.
File:NGC 759 -HST-622w.png|alt=|center|250x250px]]
Molecular gas
NGC 759 contains 2.4 × 109 M☉ of molecular gas. Most of the gas is concentrated in a circumnuclear molecular gas ring with a diameter of {{convert|1.3|kpc|ly|abbr=on|lk=on|order=flip}}. The gas may be the result of the same merger event that produced the circumnuclear molecular gas ring and the main disk.
SN 2002fb
NGC 759 has had one supernova,{{Cite web|url=http://rochesterastronomy.org/snimages/snhnameall.html|title=List of supernovae sorted by host name|website=Bright Supernova – Archives|access-date=2019-01-03}} SN 2002fb which was discovered on September 6, 2002. It was classified as a type Ia supernova.{{Cite web|url=http://rochesterastronomy.org/sn2002/index.html#2002fb|title=Bright Supernovae – 2002.|website=rochesterastronomy.org|access-date=2019-01-11}}{{Cite web|url=https://sne.space/event/|title=2002fb – The Open Supernova Catalog|language=en-US|access-date=2019-01-11|archive-date=2016-09-17|archive-url=https://web.archive.org/web/20160917005846/https://sne.space/event/|url-status=dead}}{{Cite web|url=https://wis-tns.weizmann.ac.il/object/2002fb|title=SN 2002fb {{!}} Transient Name Server|website=wis-tns.weizmann.ac.il|access-date=2019-01-11}}
See also
External links
{{commonscat}}
{{WikiSky}}
{{Ngc10}}
{{Andromeda (constellation)}}
{{DEFAULTSORT:NGC 759}}
Category:Andromeda (constellation)