Astronomy:NGC 5850

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NGC 5850
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension 15h 07m 07.6796s[1]
Declination+01° 32′ 39.362″[1]
Redshift0.008489[1]
Helio radial velocity2545 ± 2 km/s[1]
Distance131.5 ± 9.2 Mly (40.33 ± 2.83 Mpc)[1]
Apparent magnitude (B)11.5
Characteristics
TypeSB(r)b[1]
Size~88,700 ly (27.20 kpc) (estimated)[1]
Apparent size (V)4.5′ × 3.9′[1]
Other designations
IRAS 15045+0144, UGC 9715, MCG+00-39-002, PGC 53979[1]
References: List of NGC objects (5001-6000)

NGC 5850 is a barred spiral galaxy in the constellation Virgo. Its speed relative to the cosmic microwave background is 2,735 ± 13 km/s,[2] which corresponds to a Hubble distance of 40.3 ± 2.8 Mpc (~131 million ly).[3] NGC 5850 was discovered by German-British astronomer William Herschel on 24 February 1786.[4]

Characteristics

The luminosity class of NGC 5850 is II and it has a broad HI1 line.[5] It is also classified a LINER galaxy; a galaxy whose nucleus presents an emission spectrum characterized by broad lines of weakly ionized atoms.[6][7]

To date, seven non-redshift measurements yield a distance of 18.7 ± 1.75 Mpc (~61 million ly), which is far outside the Hubble distance values.[1] Note that it is with the average value of independent measurements, when they exist, that the NASA/IPAC database calculates the diameter of a galaxy and that consequently the diameter of NGC 5850 could be approximately 58.7 kpc (~191,000 ly) if we used the Hubble distance to calculate it.[8]

Morphology

NGC 5850 was used by Gérard de Vaucouleurs as a galaxy of morphological type SB(r)b in his galaxy atlas.[9][10] It is classified as a prototype double-barred system early-type spiral galaxy by other studies as well.[11][12]

In 2002, Eskridge, Frogel and Pogge published a paper, describing the morphology of 205 closely spaced spiral galaxies. The observations were carried out in the H band of infrared and in the B band (blue). According to Eskridge and his colleagues, NGC 5850 is a spiral galaxy of type SB(r)ab in the B band and type SB(r)0/a in the H band. The isophotes of the outer bulb are almost circular. The nucleus appears elliptical. The bulb is crossed by a very long bar with ansae at its end. The bar is inclined at 60 degrees to the interior bulb. A complete inner ring is formed at the end of the bar and beyond there is a faint spiral structure. The spiral arms appear to form an incomplete outer pseudo-ring.[13] One of these spiral arms of NGC 5850 appears broken, likely caused by an interaction with a north-west object.[14]

Possible galaxy pair?

NGC 5850 (left) and NGC 5846 (right) captured by Adam Block (from Mount Lemmon Observatory/University of Arizona).

NGC 5850 is close to its neighbor, NGC 5846. However, the distance between them is exactly 40 million light-years. Although they not a physical pair, it is possible that the two galaxies might have experienced a high-speed encounter around 200 million years ago.[15]

Supernova

One supernova has been observed in NGC 5850: SN 1987B (type II, mag. 15) was discovered by Robert Evans on 24 February 1987, shining 71" west and 145" south of the nucleus of the galaxy.[16][17] Spectral analysis indicated that it was a non-conventional type II supernova.[18]

See also

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 "NASA/IPAC Extragalactic Database". Results for object NGC 5850. https://ned.ipac.caltech.edu/byname?objname=ngc+5850. 
  2. ↑ "NGC 5850 and 5846 in Virgo". https://www.jthommes.com/Astro/NGC5850-5846.htm. 
  3. ↑ "NGC 5850". http://www.phys.ttu.edu/~ozprof/5850c.htm. 
  4. ↑ "Celestial Atlas entry for NGC 5850". https://cseligman.com/text/atlas/ngc58a.htm#5850. 
  5. ↑ 5.0 5.1 info@noirlab.edu. "NGC 5850" (in en). https://www.noirlab.edu/public/images/noao-n5850neumann/. 
  6. ↑ "NGC 5850 - LINER-type Active Galactic Nucleus". http://simbad.u-strasbg.fr/simbad/sim-id. 
  7. ↑ Bremer, M.; Scharwächter, J.; Eckart, A.; Valencia-S, M.; Zuther, J.; Combes, F.; Garcia-Burillo, S.; Fischer, S. (2013-10-01). "What produces the extended LINER-type emission in the NUGA galaxy NGC 5850?" (in en). Astronomy & Astrophysics 558: A34. doi:10.1051/0004-6361/201322009. ISSN 0004-6361. https://www.aanda.org/articles/aa/abs/2013/10/aa22009-13/aa22009-13.html. 
  8. ↑ "NED Query Results for NGC 5850". https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+5850. 
  9. ↑ "NGC 5850". https://kudzu.astr.ua.edu/devatlas/NGC_5850______B___________.html. 
  10. ↑ "Gérard de Vaucouleurs' Atlas of Galaxies". https://cseligman.com/text/devaucouleurs.htm#ngc5850. 
  11. ↑ Bremer, M.; Scharwächter, J.; Eckart, A.; Zuther, J.; Fischer, S.; Valencias-S., M.; Combes, F.; Garcia-Burillo, S. (2013-05-08), The Central 3 kpc of NGC 5850 
  12. ↑ Buta, R.; Crocker, D. A. (1993-04-01). "Metric Characteristics of Nuclear Rings and Related Features in Spiral Galaxies". The Astronomical Journal 105: 1344. doi:10.1086/116514. ISSN 0004-6256. Bibcode: 1993AJ....105.1344B. https://ui.adsabs.harvard.edu/abs/1993AJ....105.1344B. 
  13. ↑ 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. 
  14. ↑ Prieto, Mercedes; Gottesman, S. T.; Aguerri, Jose-Alfonso L.; Varela, Antonia-Maria (October 1997). "Structural Components of NGC 5850.". The Astronomical Journal 114: 1413. doi:10.1086/118573. ISSN 0004-6256. Bibcode: 1997AJ....114.1413P. http://dx.doi.org/10.1086/118573. 
  15. ↑ Higdon, James L.; Buta, Ronald J.; Purcell, Guy B. (1998-01-01). "An Optical and H i Study of NGC 5850: Victim of a High-Speed Encounter?". The Astronomical Journal 115 (1): 80–104. doi:10.1086/300193. ISSN 0004-6256. Bibcode: 1998AJ....115...80H. https://ui.adsabs.harvard.edu/abs/1998AJ....115...80H. 
  16. ↑ Evans, R.; Thompson, G.; McNaught, R. H. (1987). "Supernova 1987B in NGC 5850". International Astronomical Union Circular (4321): 1. Bibcode: 1987IAUC.4321....1E. 
  17. ↑ "SN 1987B". IAU. https://www.wis-tns.org/object/1987B. 
  18. ↑ Tsvetkov, D. Y. (1 April 1989). "Observations of Supernovae 1987B and 1987F". Soviet Astronomy Letters 15: 129. Bibcode: 1989SvAL...15..129T. https://adsabs.harvard.edu/full/1989SvAL...15..129T. 

Further bibliography

  • Aguerri, J. A. L.; Hunter, J. H.; Prieto, M.; Varela, A. M.; Gottesman, S. T.; Muñoz-Tuñón, C. (July 2001). "An hydrodynamical model of the barred galaxy NGC 5850". Astronomy & Astrophysics 373 (3): 786–795. doi:10.1051/0004-6361:20010557. Bibcode: 2001A&A...373..786A. 



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