NGC 1381

NGC 1381 is a lenticular galaxy located in the constellation Fornax. It is located at a distance of about 60 million light years from Earth, which, given its apparent dimensions, means that NGC 1381 is about 55,000 light years across.[1] It is a member of the Fornax Cluster. NGC 1381 appears edge-on and features a thin disk with high surface brightness and a boxy bulge.[2] Both the box-shaped bulge and the kinematics of the central area of the galaxy suggest that NGC 1381 has a bar.[3]

NGC 1381
NGC 1381 by the VLT Survey Telescope, ESO
Observation data (J2000 epoch)
ConstellationFornax
Right ascension03h 36m 31.7s[1]
Declination−35° 17′ 43″[1]
Redshift0.005751 ± 0.000030 [1]
Heliocentric radial velocity1,724 ± 9 km/s[1]
Distance58.8 ± 10.2 Mly (18.0 ± 3.1 Mpc)[1]
Group or clusterFornax Cluster
Apparent magnitude (V)11.5
Characteristics
TypeSA0 [1]
Apparent size (V)2.7′ × 0.7′[1]
Other designations
ESO 358- G029, MCG -06-09-003, PGC 13321[1]

NGC 1381 was discovered by Johann Friedrich Julius Schmidt on January 19, 1865.[4] Julius Schmidt was then director of the National Observatory of Athens and he was inspecting the Cape catalogue nebulae with a 6 ft refractor. Along with NGC 1381, he also discovered the nearby galaxies NGC 1382, NGC 1386, NGC 1389, and NGC 1428. The publication of their discovery was delayed by 10 years and was published in 1876 with the work Über einige im Cape-Catalog fehlende Nebel.[5]

NGC 1381 lies at the core of the Fornax Cluster. It lies within a region with increased density of candidate globular clusters nearly half a degree across that connects the elliptical galaxy NGC 1399 with its surrounding galaxies like NGC 1404, NGC 1387, and NGC 1380B. This structure is considered to be the result of the interactions between the cluster galaxies.[6] A region with intracluster light has also being discovered between NGC 1381, NGC 1387, and NGC 1379. It is suggested that it was created by the tidal stripping of stars and globular clusters from the galaxies.[7]

One supernova has been observed in NGC 1381: SN 2022ffv (Type Ia, mag 13.3).[8]

References
  1. "NASA/IPAC Extragalactic Database". Results for NGC 1381. Retrieved 2016-01-18.
  2. Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
  3. Bedregal, A. G.; Aragon-Salamanca, A.; Merrifield, M. R.; Milvang-Jensen, B. (1 October 2006). "S0 galaxies in Fornax: data and kinematics". Monthly Notices of the Royal Astronomical Society. 371 (4): 1912–1924. arXiv:astro-ph/0607434. Bibcode:2006MNRAS.371.1912B. doi:10.1111/j.1365-2966.2006.10829.x. S2CID 6872442.
  4. Seligman, Courtney. "NGC 1381 (= PGC 13321)". Celestial Atlas. Retrieved 19 November 2018.
  5. Steinicke, Wolfgang (2010). Observing and Cataloguing Nebulae and Star Clusters: From Herschel to Dreyer's New General Catalogue. Cambridge University Press. pp. 258–261. ISBN 9781139490108.
  6. D'Abrusco, R.; Cantiello, M.; Paolillo, M.; Pota, V.; Napolitano, N. R.; Limatola, L.; Spavone, M.; Grado, A.; Iodice, E.; Capaccioli, M.; Peletier, R.; Longo, G.; Hilker, M.; Mieske, S.; Grebel, E. K.; Lisker, T.; Wittmann, C.; Ven, G. van de; Schipani, P.; Fabbiano, G. (7 March 2016). "The Extended Spatial Distribution of Globular Clusters in the Core of the Fornax Cluster". The Astrophysical Journal. 819 (2): L31. arXiv:1602.06076. Bibcode:2016ApJ...819L..31D. doi:10.3847/2041-8205/819/2/L31. S2CID 119195254.
  7. Iodice, E.; Spavone, M.; Cantiello, M.; D'Abrusco, R.; Capaccioli, M.; Hilker, M.; Mieske, S.; Napolitano, N. R.; Peletier, R. F.; Limatola, L.; Grado, A.; Venhola, A.; Paolillo, M.; Ven, G. Van de; Schipani, P. (14 December 2017). "Intracluster Patches of Baryons in the Core of the Fornax Cluster". The Astrophysical Journal. 851 (2): 75. arXiv:1711.04681. Bibcode:2017ApJ...851...75I. doi:10.3847/1538-4357/aa9b30. S2CID 54093043.
  8. Transient Name Server entry for SN 2022ffv. Retrieved 1 January 2023.


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