NGC 7314
{{Short description|Galaxy in the constellation Piscis Austrinus}}
{{Infobox Galaxy
| name = NGC 7314
| image = NGC7314-HST-R814GB450.jpg
| image_size = 280px
| caption = NGC 7314 taken from Hubble Space Telescope
| epoch = J2000
| constellation name = Piscis Austrinus
| dec = {{DEC|−26|03|01.5740}}
| dist_ly = {{convert|16.75|Mpc|Mly|order=flip|abbr=on|lk=on}}
| z = {{val|0.004743|0.000020|fmt=commas}}
| h_radial_v = {{val|1427|u=km/s|fmt=commas}}
| size_v = {{nowrap|4′.37 × 1′.86}}
| notes =
| names = {{odlist | NGC=7314 | PGC=69253 | Arp=14 }}
}}
NGC 7314 is a spiral galaxy located in the southern constellation of Piscis Austrinus. It was discovered by English astronomer John Herschel on July 29, 1834. This is a nearby Seyfert (active) galaxy, located at a distance of approximately {{convert|16.75|Mpc|Mly|disp=out|abbr=off|lk=on}} from the Milky Way. Since it appears to have detached spiral arm segments (either from dust lanes or bright star clusters), it was listed in Halton Arp's Atlas of Peculiar Galaxies.
Walter Scott Houston describes its appearance in small telescopes:
Do not let its photographic magnitude of 11.6 scare you off, for it can be seen in a 6-inch telescope as a curiously fuzzy object. But it is small, appearing only 4' by 2'.
The morphological classification of this galaxy is SAB(rs)bc, indicating a spiral galaxy with a weak central bar (SAB), an incomplete ring structure around the bar (rs), and moderately–wound arms (bc). The plane of the galactic disk is inclined by 64° to the line of sight from the Earth, with the major axis aligned along a position angle of 178°. Within the galaxy's core is an active galactic nucleus tentatively classified as a type I Seyfert. The central supermassive black hole has a relatively low mass, estimated as {{val|0.87|0.45|e=6|ul=solar mass}}. The core is a source for X-ray emission that is seen to vary dramatically on time scales as low as hours.
References
{{reflist|refs=
{{Cite Gaia DR2|6621415775889322880}}
| title=NGC 7314 | access-date=2020-10-20 }}
| first=Courtney | last=Seligman
| url=https://cseligman.com/text/atlas/ngc73.htm#7314
| title=NGC Objects: NGC 7300 - 7349
| access-date=2020-10-20 }}
| title=Analysis of the distribution of HII regions in external galaxies. IV. The new galaxy sample. Position and inclination angles
| display-authors=1 | last1=García-Gómez | first1=C.
| last2=Athanassoula | first2=E. | last3=Barberà | first3=C.
| journal=Astronomy and Astrophysics
| volume=389 | pages=68–83 | date=July 2002
| arxiv=astro-ph/0204231 | bibcode=2002A&A...389...68G
| doi=10.1051/0004-6361:20020460 | s2cid=13942721 }}
| last1=Paturel | first1=G. | last2=Petit | first2=C.
| last3=Prugniel | first3=Ph. | last4=Theureau | first4=G.
| last5=Rousseau | first5=J. | last6=Brouty | first6=M.
| last7=Dubois | first7=P. | last8=Cambrésy | first8=L.
| title=HYPERLEDA. I. Identification and designation of galaxies
| display-authors=1 | journal=Astronomy and Astrophysics
| volume=412 | pages=45–55 | date=December 2003
| doi=10.1051/0004-6361:20031411 | doi-access=free
| bibcode=2003A&A...412...45P }}
| title=Extensive X-ray variability studies of NGC 7314 using long XMM-Newton observations
| last1=Emmanoulopoulos | first1=D. | last2=McHardy | first2=I. M.
| last3=Vaughan | first3=S. | last4=Papadakis | first4=I. E.
| display-authors=1 | journal=Monthly Notices of the Royal Astronomical Society
| volume=460 | issue=3 | pages=2413–2431 | date=August 2016
| arxiv=1605.03193 | bibcode=2016MNRAS.460.2413E
| doi=10.1093/mnras/stw1128 | doi-access=free }}
| last1=de Vaucouleurs | first1=G. | last2=de Vaucouleurs | first2=A.
| last3=Corwin | first3=H. G. Jr. | last4=Buta | first4=R. J.
| last5=Paturel | first5=G. | last6=Fouque | first6=P.
| title=Third reference catalogue of bright galaxies
| display-authors=1 | date=1991 | version=9
| publisher=Springer-Verlag | location=New York }}
| display-authors=1 | last1=Tully | first1=R. Brent
| last2=Courtois | first2=Hélène M. | last3=Sorce | first3=Jenny G.
| title=Cosmicflows-3
| journal=The Astronomical Journal
| volume=152 | issue=2 | id=50 | pages=21 | date=2016
| bibcode=2016AJ....152...50T | arxiv=1605.01765
| doi=10.3847/0004-6256/152/2/50 | s2cid=250737862 | doi-access=free }}
| title=NASA/IPAC Extragalactic Database
| work=Results for NGC 7314
| url=http://nedwww.ipac.caltech.edu/
| access-date=2007-04-21 }}
| last=Arp | first=Halton | year=1966
| title=Atlas of Peculiar Galaxies
| publisher=California Institute of Technology
| location=Pasadena, California
| url=http://nedwww.ipac.caltech.edu/level5/Arp/Arp_contents.html
| access-date=5 Jan 2010 }} (webpage includes PDF link)
| last=Houston | first=Walter Scott
| author-link=Walter Scott Houston
| title=Deep-Sky Wonders
| publisher=Sky Publishing Corporation
| date=2005 | isbn=978-1-931559-23-2}}
}}
External links
- {{commons category-inline}}
- {{WikiSky}}
{{Sky|22|35|46.2|-|26|03|01|1}}
{{NGC objects:7000-7499}}
{{Piscis Austrinus}}
{{DEFAULTSORT:NGC 7314}}