NGC 1532 explained

NGC 1532
Epoch:J2000
Type:SB(s)b pec[1]
Constellation Name:Eridanus
Z:1040 ± 5 km/s
Dist Ly:57.8 million ly
Appmag V:10.7
Size V:12.6 × 3.3
Size:210,000 ly (diameter)
Names:PGC 14638

NGC 1532, also known as Haley's Coronet,[2] is an edge-on barred spiral galaxy located approximately 50 million light-years from the Solar System in the constellation Eridanus. The galaxy was discovered by James Dunlop on 29 October 1826.[3]

Three supernovae have been observed in NGC 1532: SN 1981A (type unknown, mag. 13.5),[4] [5] SN 2016iae (type Ic, mag. 17.3),[6] and SN 2016ija (type II, mag. 16.5).[7]

Bar

NGC 1532 is one of many edge-on spiral galaxies that possesses a box-shaped bulge. This is an indication that the bulge is actually a bar. Such bars are easy to detect in face-on galaxies, where the structures can be identified visually. In inclined galaxies such as this one, however, careful analyses are needed to distinguish between bulges and bar structures.[8]

Companion galaxies and interactions

NGC 1532 may possess several dwarf companion galaxies. The galaxy is clearly interacting with one of these galaxies, the amorphous dwarf galaxy NGC 1531. The tidal forces from this interaction have created unusual plumes above the disk of NGC 1532.[9]

NGC 1532 is also an outlying member of the Fornax Cluster.[10]

See also

Notes and References

  1. Web site: NASA/IPAC Extragalactic Database . Results for NGC 1532 . 2006-11-21.
  2. Web site: Spectacular new image of Haley's Coronet. March 10, 2016 . Las Cumbres Observatory . March 21, 2019.
  3. Web site: New General Catalog Objects: NGC 1500 - 1549. cseligman.com. en-US. 2017-11-22.
  4. Web site: List of Supernovae. IAU Central Bureau for Astronomical Telegrams. 11 July 2015. https://web.archive.org/web/20150811052600/http://www.cbat.eps.harvard.edu/lists/Supernovae.html. 11 August 2015. dead.
  5. https://www.wis-tns.org/object/1981A Transient Name Server entry for SN 1981A.
  6. https://www.wis-tns.org/object/2016iae Transient Name Server entry for SN 2016iae.
  7. https://www.wis-tns.org/object/2016ija Transient Name Server entry for SN 2016ija.
  8. R. Lütticke . R.-J. Dettmar . M. Pohlen . Box- and peanut-shaped bulges. I. Statistics . Astronomy and Astrophysics Supplement . 2000 . 145 . 3 . 405–414 . 2000A&AS..145..405L . 10.1051/aas:2000354. astro-ph/0006359 . 119431696 .
  9. Book: A. Sandage . J. Bedke. 1994. Carnegie Atlas of Galaxies. Carnegie Institution of Washington. Washington, D.C.. 978-0-87279-667-6.
  10. Horellou, C. . Casoli, F.. Fabienne Casoli . Dupraz, C. . The CO and HI emission of spiral and lenticular galaxies in the Fornax cluster. . Astronomy and Astrophysics . 1995 . 303 . 361 . 1995A&A...303..361H.

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