NGC 3561

NGC 3561
SDSS image of NGC 3561B (lower and brightest round spot of "the guitar") and NGC 3561A (oval shape above NGC 3561B). Ambartsumian's Knot is the blue speck below NGC 3561B.
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension11h 11m 13.2s[1]
Declination+28° 41′ 47″[1]
Redshift0.029367[2]
Heliocentric radial velocity8804 km/s[2]
Distance412.3 Mly (126.41 Mpc)[3]
Group or clusterAbell 1185
Apparent magnitude (V)14.5[2]
Characteristics
TypeA: Sa[4]
B: E5[5]
Apparent size (V)1.36 x 0.69[2]
Other designations
A: NGC 3561A, Arp 105 NED01, UGC 06224 NED01, MCG +05-27-011, PGC 33992, CGCG 155-090 NED01, VV 237c[4]
B: IRAS 11085+2859, NGC 3561B, Arp 105 NED02, UGC 6224 NED02, MCG +05-27-010, PGC 33991, CGCG 155-090 NED02, VV 237a[5]

NGC 3561, also known as Arp 105, is a pair of interacting galaxies NGC 3561A and NGC 3561B within the galaxy cluster Abell 1185 in Ursa Major. It was discovered by British astronomer John Herschel on 30 March 1827.[6] Its common name is "the Guitar" and contains a small tidal dwarf galaxy known as Ambartsumian's Knot that is believed to be the remnant of the extensive tidal tail pulled out of one of the galaxies.[7]

One supernova has been observed in NGC 3561A: SN 1953A (type unknown, mag. 16) was discovered by Halton Arp on 16 April 1953.[8][9]

References

  1. ^ a b Myers, S. T; Jackson, N. J; Browne, I. W. A; De Bruyn, A. G; Pearson, T. J; Readhead, A. C. S; Wilkinson, P. N; Biggs, A. D; Blandford, R. D; Fassnacht, C. D; Koopmans, L. V. E; Marlow, D. R; McKean, J. P; Norbury, M. A; Phillips, P. M; Rusin, D; Shepherd, M. C; Sykes, C. M (2003). "The Cosmic Lens All-Sky Survey - I. Source selection and observations". Monthly Notices of the Royal Astronomical Society. 341 (1): 1–12. arXiv:astro-ph/0211073. Bibcode:2003MNRAS.341....1M. doi:10.1046/j.1365-8711.2003.06256.x. S2CID 18706420.
  2. ^ a b c d "NED results for object NGC 3561". NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 23 April 2018.
  3. ^ Crook, Aidan C.; Huchra, John P.; Martimbeau, Nathalie; Masters, Karen L.; Jarrett, Tom; Macri, Lucas M. (2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal. 655 (2): 790–813. arXiv:astro-ph/0610732. Bibcode:2007ApJ...655..790C. doi:10.1086/510201. S2CID 11672751.
  4. ^ a b "NVSS J111112+284243". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 April 2018.
  5. ^ a b "NGC 3561". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 April 2018.
  6. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 3561". Celestial Atlas. Retrieved 27 November 2024.
  7. ^ Galaxies with Proper Names
  8. ^ Zwicky, F. (1966). "The 1965 Palomar Supernova Search". Publications of the Astronomical Society of the Pacific. 78 (465): 471. Bibcode:1966PASP...78..471Z. doi:10.1086/128398.
  9. ^ "SN 1953A". Transient Name Server. IAU. Retrieved 27 November 2024.
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