Astronomy:NGC 5861
| NGC 5861 | |
|---|---|
 NGC 5861 imaged by PanSTARRS | |
| Observation data (J2000 epoch) | |
| Constellation | Libra |
| Right ascension | 15h 09m 16.0974s[1] |
| Declination | −11° 19′ 18.089″[1] |
| Redshift | 0.006174±0.000003[1] |
| Helio radial velocity | 1,851±1 km/s[1] |
| Distance | 82.80 ± 2.64 Mly (25.387 ± 0.809 Mpc)[1] |
| Apparent magnitude (V) | 11.6 |
| Characteristics | |
| Type | SAB(rs)c [1] |
| Size | ~108,000 ly (33.11 kpc) (estimated)[1] |
| Apparent size (V) | 3.0′ × 1.7′[1] |
| Other designations | |
| IRAS 15065-1107, MCG-02-39-003, PGC 54097[1] | |
NGC 5861 is an intermediate spiral galaxy in constellation Libra. It is located at a distance of about 85 million light years from Earth, which, given its apparent dimensions, means that NGC 5861 is about 80,000 light years across.
File:NGC5861 - HST - Potw2019a.tif The galaxy features two long spiral arms that dominate the optical disk.[2] The one arm can be traced from its beginning at the center for nearly one and a half revolutions without branching, whereas the other starts to form fragments after one revolution, forming a moderately chaotic pattern.[3] The galaxy hosts a hydroxyl megamaser.[4]
NGC 5861 is the foremost member of a small galaxy group that also includes NGC 5858, which lies 9.6 arcmin north, forming a non-interactive pair.[5] It is located within the same galaxy cloud with NGC 5878.[6]
Supernovae
Two supernovae have been observed in NGC 5861:
- SN 1971D (type unknown, mag. 15.5) was discovered by Glenn Jolly and Justus R. Dunlap on 24 February 1971.[7][8] Observations by Hubble Space Telescope indicate that possibly there is a light echo created by SN 1971D.[9]
- SN 2017erp (Type Ia, mag. 16.8) was discovered by Kōichi Itagaki on 13 June 2017.[10]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "Results for object NGC 5861". NASA and Caltech. http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+5861.
- ↑ Block, David L.; Puerari, Ivânio; Stockton, Alan; Ferreira, Dewet (6 December 2012). Toward a New Millennium in Galaxy Morphology: From z=0 to the Lyman Break. Springer. p. 16. ISBN 978-9401141147.
- ↑ Sandage, A.; Bedke, J. (1994). The Carnegie Atlas of Galaxies. Volume I. Carnegie Institution of Washington.
- ↑ Darling, Jeremy; Giovanelli, Riccardo (July 2002). "A Search for OH Megamasers at z > 0.1. III. The Complete Survey". The Astrophysical Journal 124 (1): 100–126. doi:10.1086/341166. Bibcode: 2002AJ....124..100D.
- ↑ de Vaucouleurs, G., de Vaucouleurs, A., and Corwin, H.G. (1976). Second Reference Catalogue of Bright Galaxies. Austin: University of Texas Press.
- ↑ 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.
- ↑ Dunlap, J. R. (2 March 1971). "Supernovae". Central Bureau for Astronomical Telegrams (Smithsonian Astrophysical Observatory, IAU) 2309: 1. http://www.cbat.eps.harvard.edu/IAUCs/IAUC2309.jpg. Retrieved 15 August 2025.
- ↑ "SN 1971D". IAU. https://www.wis-tns.org/object/1971D.
- ↑ Boffi, F. R.; Sparks, W. B.; Macchetto, F. D. (15 August 1999). "A search for candidate light echoes: Photometry ofsupernova environments". Astronomy and Astrophysics Supplement Series 138 (2): 253–266. doi:10.1051/aas:1999274. Bibcode: 1999A&AS..138..253B. https://aas.aanda.org/articles/aas/full/1999/14/ds8769/node4.html#SECTION00040000000000000000. Retrieved 29 June 2017.
- ↑ "SN 2017erp". IAU. https://www.wis-tns.org/object/2017erp.
External links
- NGC 5861 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Coordinates: 
15h 09m 16.0974s, −11° 19′ 18.089″
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