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NGC 5033

From Wikipedia, the free encyclopedia
Galaxy in the constellation Canes Venatici
NGC 5033
Observation data (J2000epoch)
ConstellationCanes Venatici[1]
Right ascension13h 13m 27.5s[2]
Declination+36° 35′ 38″[2]
Redshift875 ± 1 km/s[2]
Apparent magnitude (V)10.8[2]
Characteristics
TypeSA(s)c[2]
Size~180,000ly (55.09kpc) (estimated)[2]
Apparent size (V)10.7 × 5.0[2]
Other designations
UGC 8307,[2]PGC 45948[2]

NGC 5033 is an inclinedspiral galaxy located in the constellationCanes Venatici. Distance estimates vary from between 38 and 60 millionlight years from theMilky Way. The galaxy has a very bright nucleus and a relatively faint disk. Significant warping is visible in the southern half of the disk. The galaxy's relatively large angular size and relatively high surface brightness make it an object that can be viewed and imaged by amateur astronomers. The galaxy's location relatively nearEarth and itsactive galactic nucleus make it a commonly studied object for professional astronomers.

Supernovae

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Threesupernovae have been observed in NGC 5033:

Nucleus

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NGC 5033 contains aSeyfert nucleus, a type ofactive galactic nucleus.[9] Like many other active galactic nuclei, this galaxy's nucleus is thought to contain asupermassive black hole. The bright emission seen in visible light (as well as other wavebands) is partially produced by the hot gas in the environment around this black hole.

Integral field spectroscopic observations of the center of NGC 5033 indicate that the Seyfert nucleus is not located at the kinematic center of the galaxy (the point around which the stars in the galaxies rotate).[10] This has been interpreted as evidence that this galaxy has undergone a merger. The displacement of the Seyfert nucleus from the kinematic center may destabilize the rotation of gas in the center of the galaxy, which could cause gas to fall into the Seyfert nucleus. The gas would be compressed by the enormous gravitational forces in the center of the Seyfert nucleus and become hot, thus making the nucleus appear bright or "active".

Nearby galaxies

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NGC 5033 and the nearby spiral galaxyNGC 5005 comprise a physical galaxy pair.[11] The two galaxies weakly influence each other gravitationally, but they are not yet close enough to each other to be distorted by the tidal forces of the gravitational interaction. The fainterirregular galaxyIC 4182 is also a member of this group.

Detail of the galaxy by theHubble Space Telescope. The bright core is believed to be an active supermassive black hole devouring stars, dust

References

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  1. ^R. W. Sinnott, ed. (1988).The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer. Sky Publishing Corporation and Cambridge University Press.ISBN 978-0-933346-51-2.
  2. ^abcdefghi"NASA/IPAC Extragalactic Database".Results for NGC 5033. Retrieved2006-11-15.
  3. ^"SN 1950C".Transient Name Server.IAU. Retrieved27 November 2024.
  4. ^Kowal, C. T.; Sargent, W. L. W.; Zwicky, F. (1970)."The 1969 Palomar Supernova Search".Publications of the Astronomical Society of the Pacific.82 (487): 736.Bibcode:1970PASP...82..736K.doi:10.1086/128951.
  5. ^"SN 1985L".Transient Name Server.IAU. Retrieved27 November 2024.
  6. ^Aksenov, E. P.; Terebizh, Yu. V.; Metlova, N.; Leibundgut, B.; Albert, T. (1985). "Supernovae".International Astronomical Union Circular (4077): 2.Bibcode:1985IAUC.4077....2A.
  7. ^"SN 2001gd".Transient Name Server.IAU. Retrieved27 November 2024.
  8. ^Nakano, S.; Itagaki, K.; Kushida, Y.; Kushida, R.; Dimai, A. (2001). "Supernova 2001gd in NGC 5033".International Astronomical Union Circular (7761): 1.Bibcode:2001IAUC.7761....1N.
  9. ^L. C. Ho; A. V. Filippenko; W. L. W. Sargent (1997). "A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies".Astrophysical Journal Supplement.112 (2):315–390.arXiv:astro-ph/9704107.Bibcode:1997ApJS..112..315H.doi:10.1086/313041.S2CID 17086638.
  10. ^E. Meiavilla; A. Guijarro; A. Castillo-Morales; et al. (2005). "Asymmetrical structure of ionization and kinematics in the Seyfert galaxy NGC 5033".Astronomy and Astrophysics.433 (1):79–86.arXiv:astro-ph/0412410.Bibcode:2005A&A...433...79M.doi:10.1051/0004-6361:20034537.S2CID 16034143.
  11. ^G. Helou; E. E. Salpeter; Y. Terzian (1982). "Neutral hydrogen in binary and multiple galaxies".Astronomical Journal.87:1443–1464.Bibcode:1982AJ.....87.1443H.doi:10.1086/113235.

External links

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  • Media related toNGC 5033 at Wikimedia Commons


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