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]
| NGC 3561 | |
|---|---|
.jpg) 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) | |
| Constellation | Ursa Major |
| Right ascension | 11h 11m 13.2s[1] |
| Declination | +28° 41′ 47″[1] |
| Redshift | 0.029367[2] |
| Heliocentric radial velocity | 8804 km/s[2] |
| Distance | 412.3 Mly (126.41 Mpc)[3] |
| Group or cluster | Abell 1185 |
| Apparent magnitude (V) | 14.5[2] |
| Characteristics | |
| Type | A: 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] | |
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
edit- ^ 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.
- ^ 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.
- ^ 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.
- ^ a b "NVSS J111112+284243". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 April 2018.
- ^ a b "NGC 3561". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 April 2018.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 3561". Celestial Atlas. Retrieved 27 November 2024.
- ^ Galaxies with Proper Names
- ^ 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.
- ^ "SN 1953A". Transient Name Server. IAU. Retrieved 27 November 2024.
External links
edit
Media related to NGC 3561 at Wikimedia Commons- Abell 1185 and Ambartsumian's Knot
- NGC 3561 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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