NGC 383

{{short description|Radio galaxy in the constellation Pisces}}

{{Sky|01|07|24.968|+|32|24|45.103}}

{{Use dmy dates|date=November 2023}}

{{Infobox galaxy

| name = NGC 383

| image = Central Disc of NGC 383.png

| caption = Hubble Legacy Archive image of NGC 383

| epoch = J2000

| ra = {{RA|01|07|24.968}}{{cite web

| website=NASA/IPAC Extragalactic Database

| title =Results for object NGC 0383

| publisher = NASA and Caltech

| url=https://ned.ipac.caltech.edu/byname?objname=NGC+0383

| access-date=2006-10-26}}

| dec = {{DEC|+32|24|45.103}}

| constellation name = Pisces

| z = 0.017005

| type = S0

| size = ~{{convert|45.91|kpc|ly|abbr=on|lk=on|order=flip}} (estimated){{r|ned}}

| dist_ly = 209,000,000 ly
64 Mpc{{cite web

| title=Distance Results for NGC 383

| work=NASA/IPAC Extragalactic Database

| url=http://nedwww.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+383

| access-date=2010-03-31 }}

| appmag_v = 13.4

| size_v = {{Val|2.34|×|1.95|u=arcminute}}{{r|ned}}

| notes =

| names = {{odlist | name= 3C 31 |UGC= 689 | PGC= 3982 | name2= 4C 32.05 | name3= QSO B0104+321 | VV= 193a | CGCG= 501-087 | MCG= +05-03-053}}{{r|ned}}

}}

NGC 383 is a double radio galaxy{{cite simbad|title=NGC 383}} with a quasar-like appearance located in the constellation Pisces. It was discovered by German-British astronomer William Herschel on 12 September 1784.{{cite web | url = https://cseligman.com/text/atlas/ngc3a.htm#383 | title = New General Catalogue Objects: NGC{{nbsp}}383 | last = Seligman | first = Courtney | website = Celestial Atlas | access-date = 7 January 2025}} It is listed as Arp 331 in Halton Arp's Atlas of Peculiar Galaxies.{{cite journal | bibcode=1966ApJS...14....1A | title=Atlas of Peculiar Galaxies | last1=Arp | first1=Halton | journal=The Astrophysical Journal Supplement Series | date=1966 | volume=14 |page=1 | doi=10.1086/190147}}

Recent discoveries by the National Radio Astronomy Observatory in 2006 reveal that NGC 383 is being bisected by high energy relativistic jets traveling at relatively high fractions of the speed of light. The relativistic electrons in the jets are detected as synchrotron radiation in the x-ray and radio wavelengths. The focus of this intense energy is the galactic center of NGC 383. The relativistic electron jets detected as synchrotron radiation extend for several thousand parsecs and then appear to dissipate at the ends in the form of streamers or filaments.

There are four other nearby galaxies NGC 379, NGC 380, NGC 385, and NGC 384 which are suspected of being closely associated with NGC 383, as well as several other galaxies at relatively close distance.

Two supernovae have been observed in NGC 383:

• SN 2015ar (type Ia, mag. 18.8) was discovered by E. Conseil and G. Arlic on 11 November 2015.{{cite web | website=Transient Name Server | title=SN{{nbsp}}2015ar | url=https://www.wis-tns.org/object/2015ar | publisher = IAU | access-date=7 January 2025}}{{cite web

| url = http://www.cbat.eps.harvard.edu/unconf/followups/J01072038+3223598.html

| title = CBAT "Transient Object Followup Reports" for PSN J01072038+3223598

| last = Conseil

| first = E.

| last2 = Arlic

| first2 = G.

| date = 11 November 2015

| website = Central Bureau for Astronomical Telegrams

| publisher = IAU

| access-date = 7 January 2025

}}

• SN 2017hle (type Ia, mag. 18) was discovered by Xingming Observatory Sky Survey (XOSS) on 18 October 2017.{{cite web | website=Transient Name Server | title=SN{{nbsp}}2017hle | url=https://www.wis-tns.org/object/2017hle | publisher = IAU | access-date=7 January 2025}}

File:Radio galaxy 3C31.png