Astronomy:NGC 4856

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NGC 4856
NGC 4856 imaged by PanSTARRS
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension 12h 59m 21.2482s[1]
Declination−15° 02′ 31.153″[1]
Redshift0.004513 ± 0.000023 [1]
Helio radial velocity1,353 ± 7 km/s[1]
Distance73.5 ± 6.7 Mly (22.55 ± 2.05 Mpc)[1]
Group or clusterNGC 4856 Group
Apparent magnitude (V)10.6[2]
Characteristics
TypeSB(s)0/a [1]
Size~91,000 ly (28 kpc) (estimated)[1]
Apparent size (V)4.3′ × 1.2′ [1]
Other designations
MCG-02-33-078, PGC 44582[1]

NGC 4856 is a barred lenticular galaxy in the constellation Virgo. The galaxy lies about 75 million light years away from Earth, which means, given its apparent dimensions, that NGC 4856 is approximately 90,000 light years across.[1] It was discovered by William Herschel on February 8, 1785.[3] The galaxy is included in the Herschel 400 Catalogue. It is small but obvious when observed by a telescope, appearing as a concentrated and elongated glow. It lies 3.25 degrees northwest of 53 Virginis.[4]

NGC 4856 has a large and bright galactic bulge, with a bright elliptical nucleus. Eskridge et al didn't find signs of a bar,[5] however data from the Spitzer Space Telescope indicate the bulge is X-shaped, which is indicative of a bar viewed at high inclination.[6] Two smooth, low contrast spiral arms emerge from the bulge, but they quickly disappear in the symmetric and otherwise featureless disk.[5] The galaxy is rich in hydrogen, with an estimated hydrogen mass of 108.93 M☉, however there is only H-alpha emission from the nucleus, indicating the disk lacks HII regions.[7] In the center of the galaxy lies a supermassive black hole whose mass is estimated to be 107.86 ± 0.19 (47 - 109 millions) M☉.[8]

NGC 4856 is the foremost galaxy of the NGC 4856 Group, also known as LGG 322.[9][10][11][12] Other members of the group include the galaxies MCG -2-33-88, MCG -3-33-27, MCG -3-33-32, and MCG -2-33-82 according to A. M. Garcia,[11] while Makarov et al consider the galaxies MGC -2-33-88 (DDO 159), MCG -2-33-82, and MCG -2-33-93.[9] It is part of a Virgo II Groups, a chain of groups extending from the Virgo Cluster.[13][14]

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 4856". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+4856. 
  2. ↑ "Revised NGC Data for NGC 4856". https://spider.seds.org/ngc/revngcic.cgi?NGC4856. 
  3. ↑ Seligman, Courtney. "NGC 4856 (= PGC 44582)". https://cseligman.com/text/atlas/ngc48a.htm#4856. 
  4. ↑ O'Meara, Stephen James (14 June 2007) (in en). Herschel 400 Observing Guide. Cambridge University Press. p. 143. ISBN 978-0-521-85893-9. https://books.google.com/books?id=Nyh9fAC_tpIC&dq=NGC+4856&pg=PA142. 
  5. ↑ 5.0 5.1 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. ↑ Laurikainen, E.; Salo, H.; Athanassoula, E.; Bosma, A.; Herrera-Endoqui, M. (11 October 2014). "Milky Way mass galaxies with X-shaped bulges are not rare in the local Universe". Monthly Notices of the Royal Astronomical Society: Letters 444 (1): L80–L84. doi:10.1093/mnrasl/slu118. 
  7. ↑ Pogge, Richard W.; Eskridge, Paul B. (October 1993). "Star formation in the disks of H I-rich S0 galaxies". The Astronomical Journal 106: 1405. doi:10.1086/116735. Bibcode: 1993AJ....106.1405P. 
  8. ↑ Mutlu-Pakdil, Burçin; Seigar, Marc S.; Davis, Benjamin L. (20 October 2016). "THE LOCAL BLACK HOLE MASS FUNCTION DERIVED FROM THE M BH –P AND THE M BH –n RELATIONS". The Astrophysical Journal 830 (2): 117. doi:10.3847/0004-637X/830/2/117. Bibcode: 2016ApJ...830..117M. 
  9. ↑ 9.0 9.1 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. ↑ Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. (May 1992). "Groups of galaxies within 80 Mpc. II. The catalogue of groups and group members." (in en). Astronomy and Astrophysics Supplement Series 93: 211–233. ISSN 0365-0138. https://ui.adsabs.harvard.edu/abs/1992A&AS...93..211F/abstract. 
  11. ↑ 11.0 11.1 Garcia, A. M. (1 July 1993). "General study of group membership. II. Determination of nearby groups.". Astronomy and Astrophysics Supplement Series 100: 47–90. ISSN 0365-0138. Bibcode: 1993A&AS..100...47G. https://cdsarc.cds.unistra.fr/ftp/J/A+AS/100/47/table2.dat. 
  12. ↑ Giuricin, Giuliano; Marinoni, Christian; Ceriani, Lorenzo; Pisani, Armando (November 2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups" (in en). The Astrophysical Journal 543 (1): 178–194. doi:10.1086/317070. ISSN 0004-637X. https://ui.adsabs.harvard.edu/abs/2000ApJ...543..178G/abstract. 
  13. ↑ Tully, R. Brent (1988). Nearby galaxies catalog (1. publ ed.). Cambridge: Cambridge University Press. ISBN 978-0-521-35299-4. 
  14. ↑ "The Virgo II Groups". http://www.atlasoftheuniverse.com/galgrps/virii.html. 

Template:NGC objects: 4001-5000



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