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Coordinates: Sky map 11h 39m 01.721s, −-37° 44′ 18.60″
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{{Short description|Galaxy in the constellation Centaurus}}
{{Infobox galaxy
{{Infobox galaxy
| name = NGC 3783
| name = NGC 3783
| image = [[File:Artist's impression of the surroundings of the supermassive black hole in NGC 3783.jpg|250px]]
| image = File:The eponymous NGC 3783 (potw2416a).jpg
⚫
| image_scale = 1.4
⚫
| caption = Artist's impression of the surroundings of the supermassive black hole in NGC 3783
| credit = ESA
| caption = NGC 3793 imaged by the [[Hubble Space Telescope]]
| epoch =
| epoch = J2000
| pronounce =
| pronounce =
| constellation name = [[Centaurus]]
| constellation name = [[Centaurus]]
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| h_radial_v = +2,817<ref name="MNRAS399_2_683"/> [[km/s]]
| h_radial_v = +2,817<ref name="MNRAS399_2_683"/> [[km/s]]
| gal_v =
| gal_v =
| dist_ly = 135.7&nbsp;[[light year|e6ly]] (41.60<ref name="ApJ725_2270"/>&nbsp;[[parsec|Mpc]])
| dist_ly = 135.7&nbsp;[[light year|Mly]] (41.60<ref name="ApJ725_2270"/>&nbsp;[[parsec|Mpc]])
| group_cluster = NGC 3783 group
| group_cluster = NGC 3783 group
| type = SBa<ref name="AAA348_685"/>
| type = SBa<ref name="AAA348_685"/>
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| absmag_v =
| absmag_v =
| size_v = {{nowrap|1′.9 × 1′.7}}<ref name="AAA348_685"/>
| size_v = {{nowrap|1′.9 × 1′.7}}<ref name="AAA348_685"/>
| size = ~{{convert|65.25|kpc|ly|abbr=on|lk=on|order=flip}} (estimated){{r|ned}}
| notes = [[Seyfert galaxy|Seyfert 1]]
| notes = [[Seyfert galaxy|Seyfert 1]]
| names = {{odlist | MCG= -06-26-004 | PGC= 36101 | name= ESO 378- G 014 | IRAS= 11365-3727}}<ref>{{cite simbad|title=NGC 3783|accessdate=2021-02-19}}</ref>
⚫
| names =
| references =
| references =
}}
}}
'''NGC 3783''' is a [[barred spiral galaxy]] located about 135<ref name="ApJ725_2270"/> million [[light year]]s away in the [[constellation]] [[Centaurus]].<ref name="ESO_20june2013"/> Its velocity with respect to the [[cosmic microwave background]] is 3234 ± 22{{nbsp}}km/s, which corresponds to a [[Hubble's law|Hubble distance]] of {{convert|47.70 ± 3.35|Mpc|Mly|abbr=on|lk=on|order=flip}}.{{r|ned}} In addition, two ''non-redshift'' measurements give a distance of {{convert|47.750 ± 9.250|Mpc|Mly|abbr=on|lk=off|order=flip}}.<ref>{{cite web | url = https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+3783 | title = Distance Results for NGC{{nbsp}}3783 | website = NASA/IPAC EXTRAGALACTIC DATABASE | publisher = [[NASA]] | access-date = 12 December 2024}}</ref> It was discovered by [[United_Kingdom|British]] astronomer [[John Herschel]] on 21 April 1835.<ref name="selig">{{cite web | url = https://cseligman.com/text/atlas/ngc37a.htm#3783 | title = New General Catalogue Objects: NGC{{nbsp}}3783 | last = Seligman | first = Courtney | website = Celestial Atlas | access-date = 12 December 2024}}</ref>
⚫
[[File:Outflow from active galaxy NGC 3783 (artist’s impression).ogg|thumbnail|This video shows an artist’s impression of the dusty wind emanating from the black hole at the centre of galaxy NGC 3783]]
⚫
'''NGC 3783''' is a [[barred spiral galaxy]] located about 30<ref name="ApJ725_2270"/> million [[light year]]s away in the [[constellation]] [[Centaurus]].<ref name="ESO_20june2013"/> It is inclined by an angle of 23° to the [[Line-of-sight propagation|line of sight]] from the [[Earth]] along a [[position angle]] of about 163°. The [[Galaxy morphological classification|morphological classification]] of SBa<ref name="AAA348_685"/> indicates a bar structure across the center (B) and tightly-wound spiral arms (a).<ref name="Buta2007"/> Although not shown by this classification, observers note the galaxy has a luminous inner ring surrounding the bar structure. The bright compact nucleus is [[Active galactic nucleus|active]] and categorized as a [[Seyfert galaxy|Seyfert 1]] type. This nucleus is a strong source of X-ray emission and undergoes variations in emission across the electromagnetic spectrum.<ref name="AAA348_685"/>


⚫
NGC 3783 is inclined by an angle of 23° to the [[Line-of-sight propagation|line of sight]] from the [[Earth]] along a [[position angle]] of about 163°. The [[Galaxy morphological classification|morphological classification]] of SBa<ref name="AAA348_685"/> indicates a bar structure across the center (B) and tightly-wound spiral arms (a).<ref name="Buta2007"/> Although not shown by this classification, observers note the galaxy has a luminous inner ring surrounding the bar structure. The bright compact nucleus is [[Active galactic nucleus|active]] and categorized as a [[Seyfert galaxy|Seyfert 1]] type. This nucleus is a strong source of X-ray emission and undergoes variations in emission across the electromagnetic spectrum.<ref name="AAA348_685"/>
⚫
The source of the activity in this galaxy is a rapidly rotating [[supermassive black hole]], which is located at the core and is surrounded by an [[accretion disk]] of dust.<ref name="ApJ736_2_103"/> The estimated mass of this black hole is 8.7 million ([8.7 ± 1.1] × 10<sup>6</sup>) times the [[solar mass|mass of the Sun]].<ref name="ApJ572_2_746"/> [[Interferometry|Interferometric]] observations yield an inner radius of {{Convert|0.16|+/-|0.05|pc|ly|abbr=on|disp=flip}} for the orbiting [[torus]] of dust.<ref name="AAA541_L9"/>


⚫
[[File:Artist's impression of the surroundings of the supermassive black hole in NGC 3783.jpg|left|thumb|Artist's impression of the surroundings of the supermassive black hole in NGC 3783 (ESO)]]
⚫
This is a member of a [[Galaxy groups and clusters|loose association]] of 47 galaxies known as the NGC 3783 group. Located at a mean distance of 117 million light-years (36 Mpc), the group is centered at coordinates α = {{RA|11|37|12}}, δ = {{DEC|–37|30|57.6}}: equivalent to about {{Convert|267|kpc|e3ly|abbr=on|disp=flip}} from NGC 3783. The NGC 3783 group has a mean velocity of 2,903 ± 26&nbsp;km/s with respect to the [[Sun]] and a velocity dispersion of 190 ± 24&nbsp;km/s. The diffuse X-ray emission of the group is roughly centered on the galaxy NGC 3783.<ref name="MNRAS_371_2_739"/>
⚫
The source of the activity in this galaxy is a rapidly rotating [[supermassive black hole]], which is located at the core and is surrounded by an [[accretion disk]] of dust.<ref name="ApJ736_2_103"/> The estimated mass of this black hole, from [[reverberation mapping]], is about 2.8 million times the [[solar mass|mass of the Sun]].<ref name=Bentz/> [[Interferometry|Interferometric]] observations yield an inner radius of {{Convert|0.16|+/-|0.05|pc|ly|abbr=on|disp=flip}} for the orbiting [[torus]] of dust.<ref name="AAA541_L9"/>

⚫
This is a member of a [[Galaxy groups and clusters|loose association]] of 47 galaxies known as the NGC 3783 group. Located at a mean distance of 117 million light-years (36 Mpc), the group is centered at coordinates α = {{RA|11|37|12}}, δ = {{DEC|–37|30|57.6}}: equivalent to about {{Convert|267|kpc|e3ly|abbr=on|disp=flip}} from NGC 3783. The NGC 3783 group has a mean velocity of 2,903 ± 26&nbsp;km/s with respect to the [[Sun]] and a velocity dispersion of 190 ± 24&nbsp;km/s. The diffuse X-ray emission of the group is roughly centered on the galaxy NGC 3783.<ref name="MNRAS_371_2_739"/> The NGC 3783 group is located in the Hydra-Antlia region of the [[Hydra–Centaurus Supercluster|Hydra-Centurus Supercluster]].<ref>{{Cite book |last=Tully |first=R. Brent |title=Nearby galaxies catalog |date=1988 |publisher=Cambridge University Press |isbn=978-0-521-35299-4 |location=Cambridge; New York}}</ref><ref>{{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. |url=https://ui.adsabs.harvard.edu/abs/1992A&AS...93..211F |journal=Astronomy and Astrophysics Supplement Series |volume=93 |pages=211–233 |bibcode=1992A&AS...93..211F |issn=0365-0138}}</ref>

== Gallery ==
<gallery>
File:NGC 3783 legacy dr10.jpg|NGC 3783 as seen by the [[Dark Energy Spectroscopic Instrument#DESI Legacy Imaging Surveys|legacy surveys]]. The bright star on the lower left is [[HD 101274]]
⚫
File:Outflow from active galaxy NGC 3783 (artist’s impression).ogv|This video shows an artist's impression of the dusty wind emanating from the black hole at the centre of galaxy NGC 3783
</gallery>


== References ==
== References ==
{{Reflist|refs=
{{Reflist|refs=
⚫
<ref name="ned">{{cite web
| website=NASA/IPAC Extragalactic Database
| publisher = [[NASA]] and [[California_Institute_of_Technology|Caltech]]
| title=Results for object NGC 3783
| url=https://ned.ipac.caltech.edu/byname?objname=NGC+3783
| access-date=12 December 2024
⚫
}}</ref>

<ref name="ESO_20june2013">{{Citation
<ref name="ESO_20june2013">{{Citation
| title = The active galaxy NGC 3783 in the constellation of Centaurus
| title = The active galaxy NGC 3783 in the constellation of Centaurus
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| work = European Southern Observatory
| work = European Southern Observatory
| url = http://www.eso.org/public/images/eso1327c/
| url = http://www.eso.org/public/images/eso1327c/
| accessdate = 2013-06-29
| access-date = 2013-06-29
| postscript = .
| postscript = .
}}</ref>
}}</ref>
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| display-authors = 1
| display-authors = 1
| title = Atlas of Galaxies
| title = Atlas of Galaxies
| publisher = Cambridge University Press
| publisher = [[Cambridge University Press]]
| pages = 13–17
| pages = 13–17
| year = 2007
| date = 2007
| isbn = 0521820480
| isbn = 978-0521820486
| url = http://books.google.com/books?id=g-P7dCbB5MEC&pg=PA16
| url = https://books.google.com/books?id=g-P7dCbB5MEC&pg=PA16
| postscript= .
| postscript= .
}}</ref>
}}</ref>
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| bibcode = 2011ApJ...736..103B
| bibcode = 2011ApJ...736..103B
| doi = 10.1088/0004-637X/736/2/103
| doi = 10.1088/0004-637X/736/2/103
| postscript = .
| s2cid = 59522696 | postscript = .
⚫
}}</ref>

⚫
<ref name="ApJ572_2_746">{{Citation
⚫
| last1 = Onken | first1 = Christopher A.
| last2 = Peterson | first2 = Bradley M.
| title = The Mass of the Central Black Hole in the Seyfert Galaxy NGC 3783
⚫
| journal = The Astrophysical Journal
| volume = 572
| issue = 2
⚫
| pages = 746–752
|date=June 2002
| arxiv = astro-ph/0202382
⚫
| bibcode = 2002ApJ...572..746O
| doi = 10.1086/340351
| postscript = .
}}</ref>
}}</ref>


<ref name="MNRAS_371_2_739">{{Citation
<ref name="MNRAS_371_2_739">{{Citation
| last1 = Kilborn | first1 = Virginia A.
| last1 = Kilborn | first1 = Virginia A.
| authorlink1 = Virginia Kilborn
| last2 = Forbes | first2 = Duncan A.
| last2 = Forbes | first2 = Duncan A.
| last3 = Koribalski | first3 = Bärbel S. | author3-link = Baerbel Koribalski
| last3 = Koribalski | first3 = Bärbel S. | author3-link = Baerbel Koribalski
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| arxiv = astro-ph/0606463
| arxiv = astro-ph/0606463
| doi = 10.1111/j.1365-2966.2006.10697.x
| doi = 10.1111/j.1365-2966.2006.10697.x
| doi-access = free
| bibcode = 2006MNRAS.371..739K
| bibcode = 2006MNRAS.371..739K
| s2cid = 10340132
| postscript = .
| postscript = .
}}</ref>
}}</ref>
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| doi = 10.1051/0004-6361/201219213
| doi = 10.1051/0004-6361/201219213
| bibcode = 2012A&A...541L...9W
| bibcode = 2012A&A...541L...9W
| postscript = .
| s2cid = 118540180 | postscript = .
}}</ref>
}}</ref>


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}}</ref>
}}</ref>


<ref name="ApJ131_1163">{{Citation
<ref name="ApJ131_1163">{{Citation | postscript=.
| first1 = M. F. | last1 = Skrutskie | first2 = R. M. | last2 = Cutri
| last1=Skrutskie | first1=Michael F. | last2=Cutri | first2=Roc M.
| first3 = R. | last3 = Stiening | first4 = M. D. | last4 = Weinberg
| last3=Stiening | first3=Rae | last4=Weinberg | first4=Martin D.
| first5 = S. | last5 = Schneider | first6 = J. M. | last6 = Carpenter
| last5=Schneider | first5=Stephen E. | last6=Carpenter | first6=John M.
| first7 = C. | last7 = Beichman | first8 = R. | last8 = Capps
| last7=Beichman | first7=Charles A. | last8=Capps | first8=Richard W.
| first9 = T. | last9 = Chester | first10 = J. | last10 = Elias
| last9=Chester | first9=Thomas | last10=Elias | first10=Jonathan H.
| first11 = J. | last11 = Huchra | first12 = J. | last12 = Liebert
| last11=Huchra | first11=John P. | last12=Liebert | first12=James W.
| first13 = C. | last13 = Lonsdale | first14 = D. G. | last14 = Monet
| last13=Lonsdale | first13=Carol J. | last14=Monet | first14=David G.
| first15 = S. | last15 = Price | first16 = P. | last16 = Seitzer
| last15=Price | first15=Stephan | last16=Seitzer | first16=Patrick
| first17 = T. | last17 = Jarrett | first18 = J. D. | last18 = Kirkpatrick
| last17=Jarrett | first17=Thomas H. | last18=Kirkpatrick | first18=J. Davy
| first19 = J. E. | last19 = Gizis | first20 = E. | last20 = Howard
| last19=Gizis | first19=John E. | last20=Howard | first20=Elizabeth V.
| first21 = T. | last21 = Evans | first22 = J. | last22 = Fowler
| last21=Evans | first21=Tracey E. | last22=Fowler | first22=John W.
| first23 = L. | last23 = Fullmer | first24 = R. | last24 = Hurt
| last23=Fullmer | first23=Linda | last24=Hurt | first24=Robert L.
| first25 = R. | last25 = Light | first26 = E. L. | last26 = Kopan
| last25=Light | first25=Robert M. | last26=Kopan | first26=Eugene L.
| first27 = K. A. | last27 = Marsh | first28 = H. L. | last28 = McCallon
| last27=Marsh | first27=Kenneth A. | last28=McCallon | first28=Howard L.
| first29 = R. | last29 = Tam | first30 = S. | last30 = Van Dyk
| last29=Tam | first29=Robert | last30=Van Dyk | first30=Schuyler D.
| first31 = S. | last31 = Wheelock | display-authors = 1
| last31=Wheelock | first31=Sherry L.
| display-authors=1
| title = The Two Micron All Sky Survey (2MASS)
| title=The Two Micron All Sky Survey (2MASS)
⚫
| journal = Astrophysical Journal
⚫
| journal=The Astronomical Journal
| volume = 131
| date=February 1, 2006 | volume=131 | issue=2 | pages=1163–1183
| issue = 2
⚫
| bibcode=2006AJ....131.1163S | s2cid=18913331
| pages = 1163–1183
| doi=10.1086/498708 | issn=0004-6256 | doi-access=free }}</ref>
|date=February 2006
| doi = 10.1086/498708
⚫
| bibcode = 2006AJ....131.1163S
| postscript = .
⚫
}}</ref>


<ref name="ApJ725_2270">{{Citation
<ref name="ApJ725_2270">{{Citation
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| bibcode = 2010ApJ...725.2270P
| bibcode = 2010ApJ...725.2270P
| arxiv = 1010.5129
| arxiv = 1010.5129
| s2cid = 39630754
| postscript = .
| postscript = .
}}</ref>
}}</ref>


<ref name="MNRAS399_2_683">{{Citation
<ref name="MNRAS399_2_683">{{Citation
⚫
| title = The 6dF Galaxy Survey: final redshift release (DR3) and southern large-scale structures
| last1 = Jones | first1 = D. Heath | last2 = Read | first2 = Mike A.
| last1 = Jones | first1 = D. Heath | last2 = Read | first2 = Mike A.
| last3 = Saunders | first3 = Will | last4 = Colless | first4 = Matthew
| last3 = Saunders | first3 = Will | last4 = Colless | first4 = Matthew
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| last25 = Moore | first25 = Lesa | last26 = Peterson | first26 = Bruce A.
| last25 = Moore | first25 = Lesa | last26 = Peterson | first26 = Bruce A.
| last27 = Prior | first27 = Sayuri | last28 = Proust | first28 = Dominique
| last27 = Prior | first27 = Sayuri | last28 = Proust | first28 = Dominique
| last29 = Russell | first29 = Ken | last30 = Safouris, | first30 = Vicky
| last29 = Russell | first29 = Ken | last30 = Safouris | first30 = Vicky
| last31 = Wakamatsu | first31 = Ken-Ichi | last32 = Westra | first32 = Eduard
| last31 = Wakamatsu | first31 = Ken-Ichi | last32 = Westra | first32 = Eduard
| last33 = Williams | first33 = Mary | display-authors = 1
| last33 = Williams | first33 = Mary | display-authors = 1
⚫
| title = The 6dF Galaxy Survey: final redshift release (DR3) and southern large-scale structures
| journal = Monthly Notices of the Royal Astronomical Society
| journal = Monthly Notices of the Royal Astronomical Society
| volume = 399
| volume = 399
| issue = 2
| issue = 2
| pages = 683–698
| pages = 683–698
|date=October 2009
| date=October 2009
| doi = 10.1111/j.1365-2966.2009.15338.x
| doi = 10.1111/j.1365-2966.2009.15338.x
| bibcode = 2009MNRAS.399..683J
| doi-access = free | bibcode = 2009MNRAS.399..683J
| arxiv = 0903.5451
| arxiv = 0903.5451
| postscript = .
| s2cid = 119223679 | postscript = .
}}</ref>
}}</ref>

<ref name=Bentz>{{Citation | postscript = .
| title=A Detailed View of the Broad-line Region in NGC 3783 from Velocity-resolved Reverberation Mapping
| last1=Bentz | first1=Misty C. | last2=Williams | first2=Peter R.
⚫
| last3=Street | first3=Rachel | last4=Onken | first4=Christopher A.
| last5=Valluri | first5=Monica | last6=Treu | first6=Tommaso
⚫
| journal=The Astrophysical Journal | display-authors = 1
| volume=920 | issue=2 | page=112 | year=2021
| arxiv=2108.00482 | bibcode=2021ApJ...920..112B
| doi=10.3847/1538-4357/ac19af | s2cid=236777045
| doi-access=free
⚫
}}</ref>
}}
}}


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| first2 = Barbara | last2 = Kennedy
| first2 = Barbara | last2 = Kennedy
| first3 = Wallace | last3 = Tucker
| first3 = Wallace | last3 = Tucker
| display-authors = 1
| title = Chandra Clocks Million Mile Per Hour Wind Expanding From Vicinity of Giant Black Hole
| title = Chandra Clocks Million Mile Per Hour Wind Expanding From Vicinity of Giant Black Hole
⚫
| pages = 13
| date = May 25, 2000
| date = May 25, 2000
| work = Chandra Press Room
| work = Chandra Press Room
| url = http://chandra.si.edu/press/00_releases/press_052500.html
| url = http://chandra.si.edu/press/00_releases/press_052500.html
| accessdate = 2013-06-29
| access-date = June 29, 2013
⚫
| bibcode = 2000cxo..pres...13.
| postscript = .
}}
}}
* {{Citation
* {{Citation
| first1 = Sebastian | last1 = Hönig
| first1 = Sebastian | last1 = Hönig
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| first4 = Wolfgang | last4 = Duschl
| first4 = Wolfgang | last4 = Duschl
| first5 = Richard | last5 = Hook
| first5 = Richard | last5 = Hook
| display-authors = 1
| title = Dusty Surprise Around Giant Black Hole
| title = Dusty Surprise Around Giant Black Hole
| date = June 20, 2013
| date = June 20, 2013
| work = European Southern Observatory
| work = European Southern Observatory
| url = http://www.eso.org/public/news/eso1327/
| url = http://www.eso.org/public/news/eso1327/
| accessdate = 2013-06-29
| access-date = June 29, 2013
| postscript = .
}}
}}


{{NGC objects:3500-3999}}
{{ngc40|state=collapsed}}
{{Centaurus}}
{{Catalogs|NGC=3783}}


{{Sky|11|39|01.721|-|-37|44|18.60|135700000}}<!-- Last field = distance in ly -->
{{Sky|11|39|01.721|-|-37|44|18.60|135700000}}<!-- Last field = distance in ly -->
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{{DEFAULTSORT:NGC 3783}}
{{DEFAULTSORT:NGC 3783}}
[[Category:Barred spiral galaxies]]
[[Category:Barred spiral galaxies]]
[[Category:Centaurus (constellation)]]
[[Category:Seyfert galaxies]]
[[Category:Centaurus]]
[[Category:NGC objects|3783]]
[[Category:NGC objects|3783]]
[[Category:Articles containing video clips]]
[[Category:Articles containing video clips]]
[[Category:Principal Galaxies Catalogue objects|036101]]
[[Category:NGC 3783 Group]]
[[Category:MCG objects|-06-26-004]]
[[Category:ESO objects|378- G 014]]
[[Category:IRAS catalogue objects|11365-3727]]
[[Category:Astronomical objects discovered in 1835|18350421]]
[[Category:Discoveries by John Herschel]]

Latest revision as of 00:12, 13 December 2024

NGC 3783
NGC 3793 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationCentaurus
Right ascension11h 39m 01.721s[1]
Declination–37° 44′ 18.60″[1]
Redshift0.008506 ± 0.000100[2]
Heliocentric radial velocity+2,817[3] km/s
Distance135.7 Mly (41.60[4] Mpc)
Group or clusterNGC 3783 group
Apparent magnitude (V)13.43
Characteristics
TypeSBa[5]
Size~212,800 ly (65.25 kpc) (estimated)[6]
Apparent size (V)1′.9 × 1′.7[5]
Notable featuresSeyfert 1
Other designations
ESO 378- G 014, IRAS 11365-3727, MCG -06-26-004, PGC 36101[7]

NGC 3783 is a barred spiral galaxy located about 135[4] million light years away in the constellation Centaurus.[8] Its velocity with respect to the cosmic microwave background is 3234 ± 22 km/s, which corresponds to a Hubble distance of 155.6 ± 10.9 Mly (47.70 ± 3.35 Mpc).[6] In addition, two non-redshift measurements give a distance of 155.74 ± 30.17 Mly (47.750 ± 9.250 Mpc).[9] It was discovered by British astronomer John Herschel on 21 April 1835.[10]

NGC 3783 is inclined by an angle of 23° to the line of sight from the Earth along a position angle of about 163°. The morphological classification of SBa[5] indicates a bar structure across the center (B) and tightly-wound spiral arms (a).[11] Although not shown by this classification, observers note the galaxy has a luminous inner ring surrounding the bar structure. The bright compact nucleus is active and categorized as a Seyfert 1 type. This nucleus is a strong source of X-ray emission and undergoes variations in emission across the electromagnetic spectrum.[5]

Artist's impression of the surroundings of the supermassive black hole in NGC 3783 (ESO)

The source of the activity in this galaxy is a rapidly rotating supermassive black hole, which is located at the core and is surrounded by an accretion disk of dust.[12] The estimated mass of this black hole, from reverberation mapping, is about 2.8 million times the mass of the Sun.[13] Interferometric observations yield an inner radius of 0.52 ± 0.16 ly (0.16 ± 0.05 pc) for the orbiting torus of dust.[14]

This is a member of a loose association of 47 galaxies known as the NGC 3783 group. Located at a mean distance of 117 million light-years (36 Mpc), the group is centered at coordinates α = 11h 37m 12s, δ = –37° 30′ 57.6″: equivalent to about 870×10^3 ly (267 kpc) from NGC 3783. The NGC 3783 group has a mean velocity of 2,903 ± 26 km/s with respect to the Sun and a velocity dispersion of 190 ± 24 km/s. The diffuse X-ray emission of the group is roughly centered on the galaxy NGC 3783.[15] The NGC 3783 group is located in the Hydra-Antlia region of the Hydra-Centurus Supercluster.[16][17]

[edit]
  • NGC 3783 as seen by the legacy surveys. The bright star on the lower left is HD 101274
    NGC 3783 as seen by the legacy surveys. The bright star on the lower left is HD 101274
  • This video shows an artist's impression of the dusty wind emanating from the black hole at the centre of galaxy NGC 3783

References

[edit]
  1. ^ a b Skrutskie, Michael F.; et al. (February 1, 2006), "The Two Micron All Sky Survey (2MASS)", The Astronomical Journal, 131 (2): 1163–1183, Bibcode:2006AJ....131.1163S, doi:10.1086/498708, ISSN 0004-6256, S2CID 18913331.
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