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  • 21 Aug, 2019

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NGC 3175
NGC 3175 is a spiral galaxy located in the far eastern part of the southern constellation of Antlia at an approximate distance of 54 million light-years. NGC 3175 was discovered on March 30, 1835 by English astronomer John Herschel, whose notes described it as, "considerably bright, large, much extended NE-SW, very gradually little brighter middle". This galaxy is the namesake of the NGC 3175 group of galaxies, which includes the spiral galaxy NGC 3137.

The morphological classification of this galaxy is SAB(s)b, which indicates a weakly-barred spiral galaxy (SAB) with no inner ring structure (s), and somewhat tightly wound spiral arms (b). It spans an angular size of 5′.0 × 1′.3, with the major axis aligned along a position angle of 56°. The plane of the galaxy is inclined at an angle of 77° to the line of sight from the Earth, and thus is being viewed close to edge on.

A study of the galaxy using the Australia Telescope Compact Array found that the outer disk of this galaxy, beyond a radius of 3.5 kpc from the core, is free of neutral hydrogen emission. This is an indication that no star formation is occurring, which is peculiar for a spiral galaxy. In contrast, the central region is undergoing star formation and contains 5.8×10 M☉ of neutral hydrogen. There are no nearby galaxies that could explain the stripping of hydrogen gas from the outer part of the galaxy.

See also

References

  1. ^ "Galactic Diversity". www.spacetelescope.org. Retrieved 10 December 2019.
  2. ^ "NGC 3175". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-12-10.
  3. ^ 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.
  4. ^ Meyer, M. J.; et al. (June 2004). "The HIPASS catalogue - I. Data presentation". Monthly Notices of the Royal Astronomical Society. 350 (4): 1195–1209. arXiv:astro-ph/0406384. Bibcode:2004MNRAS.350.1195M. doi:10.1111/j.1365-2966.2004.07710.x. S2CID 10336076.
  5. ^ 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.
  6. ^ Dahlem, M.; et al. (May 2001). "The mysterious H I deficiency of NGC 3175". Astronomy and Astrophysics. 371: 45–51. arXiv:astro-ph/0103086. Bibcode:2001A&A...371...45D. doi:10.1051/0004-6361:20010313. S2CID 15035948.
  7. ^ Dahlem, M.; et al. (October 2006). "Dependence of radio halo properties on star formation activity and galaxy mass". Astronomy and Astrophysics. 457 (1): 121–131. arXiv:astro-ph/0607102. Bibcode:2006A&A...457..121D. doi:10.1051/0004-6361:20054787. S2CID 18292843.
  8. ^ Streicher, Magda (June 2010). "Antlia, the Machine Pneumatique". Monthly Notes of the Astronomical Society of South Africa. 69 (5 and 6): 107–112. Bibcode:2010MNSSA..69..107S.
  9. ^ Seligman, C. "NGC 3175 (= PGC 29892 = PGC 736480)". Celestial Atlas. Retrieved 2021-12-18.
  10. ^ Aranda, Ted (November 25, 2011). 3,000 Deep-Sky Objects, An Annotated Catalogue. Springer New York. p. 221. ISBN 9781441994196.
  11. ^ Kondapally, Rohit; Russell, George A.; Conselice, Christopher J.; Penny, Samantha J. (December 2018). "Faint satellite population of the NGC-3175 Group - a Local Group analogue". Monthly Notices of the Royal Astronomical Society. 481 (2): 1759–1773. arXiv:1808.09020. Bibcode:2018MNRAS.481.1759K. doi:10.1093/mnras/sty2333.
  12. ^ Mathewson, D. S.; Ford, V. L. (November 1996). "Parameters of 2447 Southern Spiral Galaxies for Use in the Tully-Fisher Relation". Astrophysical Journal Supplement. 107: 97. Bibcode:1996ApJS..107...97M. doi:10.1086/192356.
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