NGC 3561

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. 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.[6]

NGC 3561
SDSS image of NGC 3561 and PGC 33992. Ambartsumian's Knot is the blue speck below NGC 3561.
Observation data
ConstellationUrsa Major
Right ascension11h 11m 13.2s[1]
Declination+28° 41 47[1]
Redshift0.029367[2]
Helio 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: Arp 105, UGC 6224, MCG+05-27-010, PGC 33991[4]
B: MCG+05-27-011, PGC 33992[5]

References

  1. 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. "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. "NVSS J111112+284243". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 April 2018.
  5. "NGC 3561". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 April 2018.
  6. Galaxies with Proper Names


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