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NGC 3044

NGC 3044
legacy surveys image of NGC 3044
Observation data (J2000 epoch)
ConstellationSextans
Right ascension09h 53m 40.884s[1]
Declination+01° 34′ 46.74″[1]
Heliocentric radial velocity1,289 km/s[2]
Galactocentric velocity1,130 km/s[2]
Distance67 Mly (20.6 Mpc)[2]
Group or clusterLeo Cloud[3]
Apparent magnitude (V)12.5[4]
Apparent magnitude (B)12.4[5]
Characteristics
TypeSBc[6]
Mass6.4×1010[7] M☉
Notable featuresEdge-on galaxy
Other designations
IRAS 09511+0148, 2MASX J09534088+0134467, UGC 5311, LEDA 28517, MCG +00-25-031, PGC 28517, CGCG 007-056[8]

NGC 3044 is a barred spiral galaxy in the equatorial constellation of Sextans. It was discovered on December 13, 1784, by German-born English astronomer William Herschel.[9][10] In 1888, Danish astronomer J. L. E. Dreyer described it as "very faint, very large, very much extended 122°".[11] It is located at an estimated distance of 67 million light years.[2] In the B band of the UBV photometric system, the galaxy spans 4.70′ by 0.80′[5] with the major axis aligned along a position angle of 113°.[7] It is a relatively isolated galaxy with no nearby companions.[7] R. B. Tully in 1988 assigned it as a member of the widely displaced Leo Cloud.[3]

The morphological classification of NGC 3044 is SBc,[6] indicating a barred spiral (SB) with somewhat loosely-wound spiral arms (c). It is being viewed edge-on, with a galactic plane that is inclined at an angle of 79°±4° to the plane of the sky.[12] The disk appears lob-sided and disturbed, suggesting a recent merger or interaction. There is a diffuse ionized gas extending to 1 kpc above the center of the plane.[7]

The stars in the galaxy have a combined mass of approximately 1.01×1010 M☉,[6] and the star formation rate is 2.77 M☉·yr–1.[6] The total mass of the atomic gas in this galaxy is 3.5×109 M☉,[7] and it has a dust mass of 1.6×108 M☉.[3] The galaxy as a whole has a dynamic mass of 6.4×1010 M☉.[7]

One supernova has been observed in NGC 3044: SN 1983E (type II, mag. 14)[13] was discovered by Natalʹja Metlova on 13 March 1983, at an offset 29″ east, 11″ south of the galaxy.[14][15][16]

References

  1. ^ a b Skrutskie, Michael F.; et al. (February 1, 2006), "The Two Micron All Sky Survey (2MASS)", The Astronomical Journal, 131 (2): 1163–1183, Bibcode:2006AJ....131.1163S, doi:10.1086/498708, ISSN 0004-6256, S2CID 18913331.
  2. ^ a b c d Tully, R. Brent; et al. (August 2016), "Cosmicflows-3", The Astronomical Journal, 152 (2): 21, arXiv:1605.01765, Bibcode:2016AJ....152...50T, doi:10.3847/0004-6256/152/2/50, S2CID 250737862, 50.
  3. ^ a b c Irwin, J. A.; et al. (August 2013), "The 617 MHz-λ 850 μm correlation (cosmic rays and cold dust) in NGC 3044 and NGC 4157", Monthly Notices of the Royal Astronomical Society, 433 (4): 2958–2974, arXiv:1306.0226, Bibcode:2013MNRAS.433.2958I, doi:10.1093/mnras/stt937.
  4. ^ Cavin, Jerry D. (2011), The Amateur Astronomer's Guide to the Deep-Sky Catalogs, Springer New York, p. 167, ISBN 9781461406563.
  5. ^ a b Nilson, Peter (1973), "Uppsala general catalogue of galaxies", VizieR On-line Data Catalog: VII/26D, Bibcode:1995yCat.7026....0N.
  6. ^ a b c d Hodges-Kluck, Edmund; et al. (December 2016), "Ultraviolet Halos around Spiral Galaxies. I. Morphology", The Astrophysical Journal, 833 (1): 58, arXiv:1610.02404, Bibcode:2016ApJ...833...58H, doi:10.3847/1538-4357/833/1/58, 58.
  7. ^ a b c d e f Zschaechner, Laura K.; et al. (January 2015), "Investigating Disk-halo Flows and Accretion: A Kinematic and Morphological Analysis of Extraplanar H I in NGC 3044 and NGC 4302", The Astrophysical Journal, 799 (1): 61, arXiv:1411.2593, Bibcode:2015ApJ...799...61Z, doi:10.1088/0004-637X/799/1/61, S2CID 119118897, 61.
  8. ^ "NGC 3044", SIMBAD, Centre de données astronomiques de Strasbourg, retrieved 2023-03-02.
  9. ^ Erdmann, Jr., Robert E. (December 2006), "NGC Discoverer's List", The NGC/IC Project, retrieved 2023-03-05.
  10. ^ Seligman, Courtney (Aug 25, 2021), "NGC Objects: NGC 3000 - 3049", Celestial Atlas, retrieved 2023-03-05.
  11. ^ Sulentic, Jack W.; et al. (1973), The Revised New Catalogue of Nonstellar Astronomical Objects, Tucson: University of Arizona Press, Bibcode:1973rncn.book.....S.
  12. ^ Singal, J.; et al. (November 1989), "Axial Ratio of Edge-On Spiral Galaxies as a Test for Bright Radio Halos", Astronomy and Astrophysics Supplement Series, 81: 51–58, Bibcode:1989A&AS...81...51H.
  13. ^ Tsvetkov, D. Yu. (1988). "Light curves of five supernovae". Peremennye Zvezdy. 22: 653. Bibcode:1988PZ.....22..653T.
  14. ^ Aksenov, E. P.; Terebizh, Yu. V.; Maza, J.; Gonzalez, L. E. (1983). "Supernovae". International Astronomical Union Circular (3787): 1. Bibcode:1983IAUC.3787....1A.
  15. ^ Kosai, H.; et al. (April 1983), Marsden, B. G. (ed.), "Supernovae", IAU Circular, 3789 (1), Bibcode:1983IAUC.3789....1K.
  16. ^ "SN 1983E". Transient Name Server. IAU. Retrieved 5 December 2024.

Further reading

Quelle: https://en.wikipedia.org/wiki/NGC_3044