NGC 1532

NGC 1532
Observation data (J2000 epoch)
Constellation Eridanus
Right ascension 04h 12m 04.3s[1]
Declination −32° 52′ 27″[1]
Redshift 1040 ± 5 km/s[1]
Apparent magnitude (V) 10.7[1]
Characteristics
Type SB(s)b pec[1]
Apparent size (V) 12′.6 × 3′.3[1]
Other designations
PGC 14638[1]

NGC 1532 is an edge-on barred spiral galaxy in the constellation Eridanus. One supernova, SN 1981A, has been recorded in it.[2]

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.[3]

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.[4]

NGC 1532 is also an outlying member of the Fornax Cluster[5]

See also

NGC 4631 - an edge-on spiral galaxy also interacting with a dwarf companion

References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 1532. Retrieved 2006-11-21.
  2. ↑ "List of Supernovae". IAU Central Bureau for Astronomical Telegrams. Archived from the original on 11 July 2015. Retrieved 11 July 2015.
  3. ↑ R. Lütticke; R.-J. Dettmar; M. Pohlen (2000). "Box- and peanut-shaped bulges. I. Statistics". Astronomy and Astrophysics Supplement. 145 (3): 405–414. Bibcode:2000A&AS..145..405L. arXiv:astro-ph/0006359 Freely accessible. doi:10.1051/aas:2000354.
  4. ↑ A. Sandage; J. Bedke (1994). Carnegie Atlas of Galaxies. Washington, D.C.: Carnegie Institution of Washington. ISBN 0-87279-667-1.
  5. ↑ 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.

Coordinates: 04h 12m 04.2s, −32° 52′ 30″

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