Astronomy:NGC 2935

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NGC 2935
NGC 2935 imaged by Legacy Surveys
Observation data (J2000 epoch)
ConstellationHydra
Right ascension 09h 36m 44.8615s[1]
Declination−21° 07′ 41.53″[1]
Redshift0.007575[1]
Helio radial velocity2271 ± 3 km/s[1]
Distance90.97 ± 2.40 Mly (27.890 ± 0.736 Mpc)[1]
Apparent magnitude (V)12.1[1]
Characteristics
Type(R')SAB(s)b[1]
Size~185,200 ly (56.79 kpc) (estimated)[1]
Apparent size (V)3.7′ × 2.8′[1]
Other designations
ESO 565- G 023, IRAS 09344-2054, MCG-03-25-011, PGC 27351[1]

NGC 2935 is a large intermediate spiral galaxy located in the constellation Hydra. Its speed relative to the cosmic microwave background is 2,601 ± 23 km/s, which corresponds to a Hubble distance of 38.4 ± 2.7 Mpc (~125 million ly). It was discovered by German-British astronomer William Herschel on 20 March 1786.[1][2]

NGC 2935 was used by Gérard de Vaucouleurs as a galaxy of morphological type (R2')SAB(s)b in his galaxy atlas. The luminosity class of NGC 2935 is II and it has a broad HI line. In addition, it is a star-forming burst galaxy.[3]

To date, 29 studies and measurements based on redshift give a distance of 27.890 ± 3.962 Mpc (~91 million ly),[4] which is outside the Hubble distance values. 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 2935 could be approximately 78, 1 kpc (~255,000 ly) if we used the Hubble distance to calculate it.[5]

Nuclei disk

Observations from the Hubble Space Telescope have concluded that a star-forming disk is present around the core of NGC 2935. The size of its semi-major axis is estimated at 530 pc (~1730 light years) at the estimated distance of this galaxy.[6]

Supernovae

Four supernovae have been discovered in NGC 2935:

  • SN 1975F (type unknown, mag. 15) was discovered by Yvonne Dunlap and Justus R. Dunlap of the Corralitos Observatory at Northwestern University on 11 June 1975.[7][8]
  • SN 1996Z (Type Ia, mag. 16) was discovered by Wayne Johnson on 16 May 1996.[9][10]
  • SN 2021mwj (Type II, mag. 17.674) was discovered by ATLAS on 21 May 2021.[11]
  • SN 2021aczp (Type II, mag. 18.878) was discovered by ATLAS on 1 November 2021.[12]

NGC 2935 Group

NGC 2935 is part of a small group of three galaxies named after it. The other two galaxies in the NGC 2935 group are NGC 2983 and NGC 2986.[13]

See also

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 "Results for object NGC 2935". https://ned.ipac.caltech.edu/byname?objname=NGC+2935. 
  2. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 2935". https://cseligman.com/text/atlas/ngc29.htm#2935. 
  3. ↑ "Revised data from NGC and IC catalogue by Wolfgang Steinickle, NGC 2900 to NGC 2999". http://astrovalleyfield.ca/AstronomieCompl/NGC%20et%20autres/WolfgangS/N2900_exc_web.htm. 
  4. ↑ "New General Catalog Objects: NGC 2900 - 2949". https://cseligman.com/text/atlas/ngc29.htm. 
  5. ↑ "Gérard de Vaucouleurs' Atlas of Galaxies". https://cseligman.com/text/devaucouleurs.htm. 
  6. ↑ Comerón, S.; Knapen, J. H.; Beckman, J. E.; Laurikainen, E.; Salo, H.; Martínez-Valpuesta, I.; Buta, R. J. (March 2010). "AINUR: Atlas of Images of NUclear Rings". Monthly Notices of the Royal Astronomical Society 402 (4): 2462–2490. doi:10.1111/j.1365-2966.2009.16057.x. Bibcode: 2010MNRAS.402.2462C. 
  7. ↑ Dunlap, J. R.; Dunlap, Y. (1975). "Supernovae". International Astronomical Union Circular (2782): 1. Bibcode: 1975IAUC.2782....1D. http://www.cbat.eps.harvard.edu/iauc/02700/02782.html#item1. 
  8. ↑ "SN 1975F". IAU. https://www.wis-tns.org/object/1975F. 
  9. ↑ Johnson, W.; Benetti, S.; Turatto, M.; Moehler, S.; Garnavich, P.; Riess, A.; Kirshner, R.; Jansen, R. et al. (1996). "Supernova 1996Z in NGC 2935". International Astronomical Union Circular (6401): 1. Bibcode: 1996IAUC.6401....1J. http://www.cbat.eps.harvard.edu/iauc/06400/06401.html#Item1. 
  10. ↑ "SN 1996Z". IAU. https://www.wis-tns.org/object/1996Z. 
  11. ↑ "SN 2021mwj". IAU. https://www.wis-tns.org/object/2021mwj. 
  12. ↑ "SN 2021aczp". IAU. https://www.wis-tns.org/object/2021aczp. 
  13. ↑ "List of nearby galaxy groups". http://atunivers.free.fr/virgo/galaclus.html. 

Template:NGC objects:2500-2999



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