NGC 6384

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NGC 6384
NGC 6384 HST.jpg
Hubble Space Telescope image of NGC 6384
Observation data (J2000 epoch)
Constellation Ophiuchus
Right ascension 17h 32m 24.302s [1]
Declination +07° 03′ 36.97″ [1]
Helio radial velocity 1,665  km/s [2]
Distance 76.6 Mly (23.5 Mpc) [2]
Characteristics
Type SAB(r)bc [3]
Mass 1.05 × 1011 [3]   M☉
Size138,000 light years
Other designations
UGC 10891

NGC 6384 is an intermediate barred spiral galaxy located about 77 million light-years away in the northern part of the constellation Ophiuchus. It has a morphological classification of SAB(r)bc, [3] indicating that it is a weakly barred galaxy (SAB) with an inner ring structure (r) orbiting the bar, and moderate to loosely wound spiral arms (bc). [4] The galaxy is inclined by an angle of 47° to the line of sight, along a position angle of 40°. [5] The estimated mass of the stars in this galaxy is 105 billion times the mass of the Sun. [3]

Contents

At one time NGC 6384 was considered a normal galaxy with no activity in the nucleus. However, it is now classified as a transition object (T2), which is thought to be a LINER-type galaxy whose emission-line spectra is contaminated by H II regions in the nucleus. [6]

Tow supernovae have been observed in NGC 6384. On 24 June 1971, a type Ia supernova event was discovered in this galaxy at 27″ east and 20″ north of the nucleus. It reached a peak visual magnitude of 12.85 around the end of June. [7] Designated SN 1971L, it was situated along a spiral arm, suggesting that the progenitor was not a member of the older, more evolved stellar population of the galaxy. [5] On 3 May 2017, SN 2017drh (type Ia, mag. 17.9) was discovered. [8]

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<span class="mw-page-title-main">Messier 84</span> Galaxy in the constellation Virgo

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<span class="mw-page-title-main">NGC 2770</span> Spiral galaxy in the constellation Lynx

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<span class="mw-page-title-main">NGC 1003</span> Galaxy in the constellation Perseus

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References

  1. 1 2 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 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.
  2. 1 2 Cappellari, Michele; et al. (May 2011), "The ATLAS3D project - I. A volume-limited sample of 260 nearby early-type galaxies: science goals and selection criteria", Monthly Notices of the Royal Astronomical Society, 413 (2): 813–836, arXiv: 1012.1551 , Bibcode:2011MNRAS.413..813C, doi:10.1111/j.1365-2966.2010.18174.x, S2CID   15391206.
  3. 1 2 3 4 Weinzirl, Tim; et al. (May 2009), "Bulge n and B/T in High-Mass Galaxies: Constraints on the Origin of Bulges in Hierarchical Models", The Astrophysical Journal, 696 (1): 411–447, arXiv: 0807.0040 , Bibcode:2009ApJ...696..411W, doi:10.1088/0004-637X/696/1/411, S2CID   2847019.
  4. ↑ Buta, Ronald J.; et al. (2007), Atlas of Galaxies, Cambridge University Press, pp. 13–17, ISBN   978-0521820486.
  5. 1 2 Hakobyan, A. A.; et al. (October 2007), "Study of the HII regions in the spiral galaxy NGC6384", Astrophysics, 50 (4): 426–439, arXiv: 0803.4502 , Bibcode:2007Ap.....50..426H, doi:10.1007/s10511-007-0040-8, S2CID   15592233.
  6. ↑ Sánchez-Portal, Miguel; Díaz, Ángeles I.; Terlevich, Elena; Terlevich, Roberto (May 2004), "Structural parameters of nearby emission-line galaxies", Monthly Notices of the Royal Astronomical Society , 350 (3): 1087–1106, arXiv: astro-ph/0403403 , Bibcode:2004MNRAS.350.1087S, doi:10.1111/j.1365-2966.2004.07720.x, S2CID   118953569.
  7. ↑ Barbon, R.; et al. (1973), "Observations of five supernovae 1970-71", Memorie della Società Astronomia Italiana, 44: 65–85, Bibcode:1973MmSAI..44...65B.
  8. ↑ Transient Name Server entry for SN 2017drh. Retrieved 25 March 2023.
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