Astronomy:NGC 3887

From HandWiki
NGC 3887
NGC 3887 imaged by Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationCrater
Right ascension 11h 47m 04.5920s[1]
Declination−16° 51′ 16.210″[1]
Redshift0.004029 ± 0.000004 [1]
Helio radial velocity1,208 ± 1 km/s[1]
Distance57.7 ± 5.9 Mly (17.7 ± 1.8 Mpc)[1]
Apparent magnitude (V)10.6[2]
Characteristics
TypeSB(r)bc [1]
Size~61,000 ly (18.6 kpc) (estimated)[1]
Apparent size (V)3.3′ × 2.5′[1]
Other designations
IRAS 11445-1634, MCG-03-30-012, PGC 36754[1]

NGC 3887 is a barred spiral galaxy in the constellation Crater. The galaxy lies about 55 million light years away from Earth, which means, given its apparent dimensions, that NGC 3887 is approximately 60,000 light years across.[1] It was discovered by William Herschel on December 31, 1785.[3]

NGC 3887 is a barred galaxy. Two thin dust lanes run across the bar from the centre of the galaxy, which bend and extend into the arms.[4] The bar is embedded in a small centrally concentrated bulge. The galaxy has two spiral arms which emerge from its end of the bar. The arms appear lumpy and can be traced for about 300° before fading. The lumps are the most pronounced part of the arms at their outer portion.[5] HII regions are visible across the arms.[4] The star formation rate is estimated to be 2.1 M☉ per year.[6] The galaxy has an inner ring, with a diameter of 1.13 arcminutes and an outer ring with a diameter of 3.38 arcminutes.[7] In the centre of the galaxy lies a supermassive black hole with an estimated mass of (2.82±1.33)×106 M☉. The galaxy is seen at an inclination of 49°.[8]

NGC 3887 is the foremost galaxy of the NGC 3887 Group, which also includes the galaxies HIPASS J1143-15, [KKS2000] 25, and HIPASS J1150-17.[9]

  • The central region of NGC 3887 by the Hubble Space Telescope[10]
    The central region of NGC 3887 by the Hubble Space Telescope[10]
  • NGC 3887 in ultraviolet by GALEX
    NGC 3887 in ultraviolet by GALEX

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 "Results for object NGC 3887". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+3887. 
  2. ↑ "Revised NGC Data for NGC 3887". https://spider.seds.org/ngc/revngcic.cgi?NGC3887. 
  3. ↑ Seligman, Courtney. "NGC 3887 (= PGC 36754)". https://cseligman.com/text/atlas/ngc38a.htm#3887. 
  4. ↑ 4.0 4.1 Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
  5. ↑ Eskridge, Paul B.; Frogel, Jay A.; Pogge, Richard W.; Quillen, Alice C.; Berlind, Andreas A.; Davies, Roger L.; DePoy, D. L.; Gilbert, Karoline M. et al. (November 2002). "Near-Infrared and Optical Morphology of Spiral Galaxies". The Astrophysical Journal Supplement Series 143 (1): 73–111. doi:10.1086/342340. Bibcode: 2002ApJS..143...73E. 
  6. ↑ Parkash, Vaishali; Brown, Michael J. I.; Jarrett, T. H.; Bonne, Nicolas J. (1 September 2018). "Relationships between Hi Gas Mass, Stellar Mass, and the Star Formation Rate of HICAT+WISE (H i-WISE) Galaxies". The Astrophysical Journal 864 (1): 40. doi:10.3847/1538-4357/aad3b9. Bibcode: 2018ApJ...864...40P. https://cdsarc.cds.unistra.fr/ftp/J/ApJ/864/40/ReadMe. 
  7. ↑ Comerón, S.; Salo, H.; Laurikainen, E.; Knapen, J. H.; Buta, R. J.; Herrera-Endoqui, M.; Laine, J.; Holwerda, B. W. et al. (February 2014). "ARRAKIS: atlas of resonance rings as known in the S 4 G". Astronomy & Astrophysics 562: A121. doi:10.1051/0004-6361/201321633. Bibcode: 2014A&A...562A.121C. https://www.aanda.org/articles/aa/pdf/2014/02/aa21633-13.pdf. 
  8. ↑ Treuthardt, Patrick; Seigar, Marc S.; Sierra, Amber D.; Al-Baidhany, Ismaeel; Salo, Heikki; Kennefick, Daniel; Kennefick, Julia; Lacy, Claud H. S. (11 July 2012). "On the link between central black holes, bar dynamics and dark matter haloes in spiral galaxies: SMBHs, bar dynamics, and DM haloes". Monthly Notices of the Royal Astronomical Society 423 (4): 3118–3133. doi:10.1111/j.1365-2966.2012.21118.x. Bibcode: 2012MNRAS.423.3118T. 
  9. ↑ Makarov, Dmitry; Karachentsev, Igor (21 April 2011). "Galaxy groups and clouds in the local (z~ 0.01) Universe". Monthly Notices of the Royal Astronomical Society 412 (4): 2498–2520. doi:10.1111/j.1365-2966.2010.18071.x. Bibcode: 2011MNRAS.412.2498M. http://www.sao.ru/hq/dim/groups/galaxies.dat. Retrieved 1 February 2025. 
  10. ↑ "A Galactic Traffic Jam" (in en). 2 March 2009. https://esahubble.org/images/potw2009a/. 



Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:NGC_3887&oldid=3923426"