NGC 3783
| NGC 3783 | |
|---|---|
 Hubble Space Telescopeimage of NGC 3793 | |
| Observation data (J2000epoch) | |
| Constellation | Centaurus |
| Right ascension | 11h39m01.721s[1] |
| Declination | –37° 44′ 18.60″[1] |
| Redshift | 0.008506 ± 0.000100[2] |
| Heliocentric radial velocity | +2,817[3]km/s |
| Distance | 135.7Mly(41.60[4]Mpc) |
| Grouporcluster | NGC 3783 group |
| Apparent magnitude(V) | 13.43 |
| Characteristics | |
| Type | SBa[5] |
| Apparent size(V) | 1′.9 × 1′.7[5] |
| Notable features | Seyfert 1 |
| Other designations | |
| MCG-06-26-004,PGC36101[6] | |
NGC 3783is abarred spiral galaxylocated about 135[4]millionlight yearsaway in theconstellationCentaurus.[7]It is inclined by an angle of 23° to theline of sightfrom theEarthalong aposition angleof about 163°. Themorphological classificationof SBa[5]indicates a bar structure across the center (B) and tightly-wound spiral arms (a).[8]Although not shown by this classification, observers note the galaxy has a luminous inner ring surrounding the bar structure. The bright compact nucleus isactiveand categorized as aSeyfert 1type. This nucleus is a strong source of X-ray emission and undergoes variations in emission across the electromagnetic spectrum.[5]
The source of the activity in this galaxy is a rapidly rotatingsupermassive black hole,which is located at the core and is surrounded by anaccretion diskof dust.[9]The estimated mass of this black hole, fromreverberation mapping,is about 2.8 million times themass of the Sun.[10]Interferometricobservations yield an inner radius of 0.52 ± 0.16 ly (0.16 ± 0.05 pc) for the orbitingtorusof dust.[11]
This is a member of aloose associationof 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 =11h37m12s,δ = –37° 30′ 57.6″: equivalent to about 870×103ly (267 kpc) from NGC 3783. The NGC 3783 group has a mean velocity of 2,903 ± 26 km/s with respect to theSunand a velocity dispersion of 190 ± 24 km/s. The diffuse X-ray emission of the group is roughly centered on the galaxy NGC 3783.[12]The NGC 3783 group is located in the Hydra-Antlia region of theHydra-Centurus Supercluster.[13][14]
Gallery
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NGC 3783 as seen by thelegacy surveys.The bright star on the lower left isHD 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]- ^abSkrutskie, 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,ISSN0004-6256,S2CID18913331.
- ^Strauss, Michael A.; et al. (November 1992), "A redshift survey of IRAS galaxies. VII - The infrared and redshift data for the 1.936 Jansky sample",Astrophysical Journal Supplement Series,83(1): 29–63,Bibcode:1992ApJS...83...29S,doi:10.1086/191730.
- ^Jones, D. Heath; et al. (October 2009), "The 6dF Galaxy Survey: final redshift release (DR3) and southern large-scale structures",Monthly Notices of the Royal Astronomical Society,399(2): 683–698,arXiv:0903.5451,Bibcode:2009MNRAS.399..683J,doi:10.1111/j.1365-2966.2009.15338.x,S2CID119223679.
- ^abPereira-Santaella, Miguel; et al. (December 2010), "The Mid-infrared High-ionization Lines from Active Galactic Nuclei and Star-forming Galaxies",The Astrophysical Journal,725(2): 2270–2280,arXiv:1010.5129,Bibcode:2010ApJ...725.2270P,doi:10.1088/0004-637X/725/2/2270,S2CID39630754.
- ^abcdGarcía-Barreto, J. A.; et al. (August 1999), "HI spatial distribution in the galaxy NGC 3783",Astronomy and Astrophysics,348:685–692,arXiv:astro-ph/9906492,Bibcode:1999A&A...348..685G.
- ^"NGC 3783".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2021-02-19.
- ^"The active galaxy NGC 3783 in the constellation of Centaurus",European Southern Observatory,June 20, 2013,retrieved2013-06-29.
- ^Buta, Ronald J.; et al. (2007),Atlas of Galaxies,Cambridge University Press,pp. 13–17,ISBN978-0521820486.
- ^Brenneman, L. W.; et al. (August 2011), "The Spin of the Supermassive Black Hole in NGC 3783",The Astrophysical Journal,736(2): 103,arXiv:1104.1172,Bibcode:2011ApJ...736..103B,doi:10.1088/0004-637X/736/2/103,S2CID59522696.
- ^Bentz, Misty C.; et al. (2021), "A Detailed View of the Broad-line Region in NGC 3783 from Velocity-resolved Reverberation Mapping",The Astrophysical Journal,920(2): 112,arXiv:2108.00482,Bibcode:2021ApJ...920..112B,doi:10.3847/1538-4357/ac19af,S2CID236777045.
- ^Weigelt, G.; et al. (May 2012), "VLTI/AMBER observations of the Seyfert nucleus of NGC 3783",Astronomy & Astrophysics,541:L9,arXiv:1204.6122,Bibcode:2012A&A...541L...9W,doi:10.1051/0004-6361/201219213,S2CID118540180.
- ^Kilborn, Virginia A.;et al. (September 2006), "Gaseous tidal debris found in the NGC 3783 group",Monthly Notices of the Royal Astronomical Society,371(2): 739–749,arXiv:astro-ph/0606463,Bibcode:2006MNRAS.371..739K,doi:10.1111/j.1365-2966.2006.10697.x,S2CID10340132.
- ^Tully, R. Brent (1988).Nearby galaxies catalog.Cambridge; New York: Cambridge University Press.ISBN978-0-521-35299-4.
- ^Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. (1992-05-01)."Groups of galaxies within 80 Mpc. II. The catalogue of groups and group members".Astronomy and Astrophysics Supplement Series.93:211–233.Bibcode:1992A&AS...93..211F.ISSN0365-0138.
External links
[edit]- Roy, Steve; et al. (May 25, 2000),"Chandra Clocks Million Mile Per Hour Wind Expanding From Vicinity of Giant Black Hole",Chandra Press Room,p. 13,Bibcode:2000cxo..pres...13.,retrievedJune 29,2013
- Hönig, Sebastian; et al. (June 20, 2013),"Dusty Surprise Around Giant Black Hole",European Southern Observatory,retrievedJune 29,2013
