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NGC 1532

Coordinates:Sky map04h 12m 04.335s, −32° 52′ 26.745″
From Wikipedia, the free encyclopedia
Galaxy in the constellation Eridanus
NGC 1532
NGC 1532 with smallerdwarf galaxyNGC 1531 (above)
Observation data (J2000epoch)
ConstellationEridanus
Right ascension04h 12m 04.335s[1]
Declination−32° 52′ 26.745″[1]
Redshift1040 ± 5 km/s[1]
Distance57.8 million ly
Apparent magnitude (V)10.7[1]
Characteristics
TypeSB(s)b pec[1]
Size210,000 ly (diameter)
Apparent size (V)12.6′ × 3.3′[1]
Other designations
ESO 359- G 027,IRAS F04101-3300,MCG -05-11-002,PGC 14638[1]

NGC 1532, also known as Haley's Coronet,[2] is an edge-onbarred spiral galaxy located approximately 50 millionlight-years from theSolar System in theconstellationEridanus. The galaxy was discovered byJames Dunlop on 29 October 1826.[3]

Bar

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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.[4]

Companion galaxies and interactions

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NGC 1532 may possess severaldwarf companion galaxies. The galaxy is clearly interacting with one of these galaxies, the amorphous dwarf galaxyNGC 1531. The tidal forces from this interaction have created unusual plumes above the disk of NGC 1532.[5]

NGC 1532 is also an outlying member of theFornax Cluster.[6]

Supernovae

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Threesupernovae have been observed in NGC 1532:

  • SN 1981A (type unknown, mag. 13.5) was discovered byRobert Evans on 24 February 1981.[7][8]
  • SN 2016iae (type Ic, mag. 17.32) was discovered byATLAS on 7 November 2016.[9]
  • SN 2016ija (type II, mag. 16.5) was discovered by theDistance Less Than 40 Mpc Survey (DLT40) on 22 November 2016.[10]

See also

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References

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  1. ^abcdefg"NASA/IPAC Extragalactic Database".Results for NGC 1532. Retrieved2006-11-21.
  2. ^"Spectacular new image of Haley's Coronet".Las Cumbres Observatory. March 10, 2016. RetrievedMarch 21, 2019.
  3. ^"New General Catalog Objects: NGC 1500 - 1549".cseligman.com. Retrieved2017-11-22.
  4. ^R. Lütticke; R.-J. Dettmar; M. Pohlen (2000). "Box- and peanut-shaped bulges. I. Statistics".Astronomy and Astrophysics Supplement.145 (3):405–414.arXiv:astro-ph/0006359.Bibcode:2000A&AS..145..405L.doi:10.1051/aas:2000354.S2CID 119431696.
  5. ^A. Sandage; J. Bedke (1994).Carnegie Atlas of Galaxies. Washington, D.C.:Carnegie Institution of Washington.ISBN 978-0-87279-667-6.
  6. ^Horellou, C.;Casoli, F.; Dupraz, C. (1995). "The CO and HI emission of spiral and lenticular galaxies in the Fornax cluster".Astronomy and Astrophysics.303: 361.Bibcode:1995A&A...303..361H.
  7. ^Cragg, T.; Evans, R.; Torres, C.; Gonzalez, L. E.; Wischnjewsky, M. (1981). "Probable Supernova in NGC 1532".International Astronomical Union Circular (3578): 2.Bibcode:1981IAUC.3578....2C.
  8. ^"SN 1981A".Transient Name Server.IAU. Retrieved4 December 2024.
  9. ^"SN 2016iae".Transient Name Server.IAU. Retrieved4 December 2024.
  10. ^"SN 2016ija".Transient Name Server.IAU. Retrieved4 December 2024.

External links

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