Astronomy:NGC 3561
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Short description: Pair of interacting galaxies in the constellation Ursa Major
Coordinates: 
11h 11m 41s, +28° 38′ 41″
| NGC 3561 | |
|---|---|
.jpg) SDSS image of NGC 3561 (brightest round spot of "the guitar") and PGC 33992 (oval shape above NGC 3561). Ambartsumian's Knot is the blue speck below NGC 3561. | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 11h 11m 13.2s[1] |
| Declination | +28° 41′ 47″[1] |
| Redshift | 0.029367[2] |
| Helio 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: Arp 105, UGC 6224, MCG+05-27-010, PGC 33991[4] B: MCG+05-27-011, PGC 33992[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. 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]
One supernova has been observed in NGC 3561: SN 1953A (type unknown, mag. 16).[7]
References
- ↑ 1.0 1.1 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 et al. (2003). "The Cosmic Lens All-Sky Survey - I. Source selection and observations". Monthly Notices of the Royal Astronomical Society 341 (1): 1–12. doi:10.1046/j.1365-8711.2003.06256.x. Bibcode: 2003MNRAS.341....1M.
- ↑ 2.0 2.1 2.2 2.3 "NED results for object NGC 3561". NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+3561&extend=no&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
- ↑ 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. doi:10.1086/510201. Bibcode: 2007ApJ...655..790C.
- ↑ 4.0 4.1 "NVSS J111112+284243". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NVSS+J111112%2B284243.
- ↑ 5.0 5.1 "NGC 3561". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+3561.
- ↑ Galaxies with Proper Names
- ↑ Transient Name Server entry for SN 1953A. Retrieved 28 March 2023.
External links
- 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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