NGC 3561 explained

NGC 3561
Constellation Name:	Ursa Major
Epoch:	J2000
Ra:	^[1]
Appmag V:	14.5
Z:	0.029367^[2]
H Radial V:	8804 km/s
Dist Ly:	^[3]
Group Cluster:	Abell 1185
Type:	A: Sa^[4] B: E5^[5]
Size V:	1.36 x 0.69
Names:	A: B:

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]}

External links

• • Abell 1185 and Ambartsumian's Knot

Notes and References

1. 2003MNRAS.341....1M. 10.1046/j.1365-8711.2003.06256.x. astro-ph/0211073. The Cosmic Lens All-Sky Survey - I. Source selection and observations. Monthly Notices of the Royal Astronomical Society. 341. 1. 1–12. 2003. 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. free . 18706420.
2. Web site: NED results for object NGC 3561. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. NASA/IPAC Extragalactic Database. 23 April 2018.
3. Groups of Galaxies in the Two Micron All Sky Redshift Survey. Crook, Aidan C.. Huchra, John P.. Martimbeau, Nathalie. Masters, Karen L.. Jarrett, Tom. Macri, Lucas M.. The Astrophysical Journal. 655. 2. 790–813. 2007. 2007ApJ...655..790C. 10.1086/510201. astro-ph/0610732. 11672751.
4. NVSS J111112+284243. 23 April 2018.
5. NGC 3561. 23 April 2018.
6. Web site: New General Catalogue Objects: NGC3561 . Seligman . Courtney . Celestial Atlas . 27 November 2024.
7. https://web.archive.org/web/19991104155433/http://seds.lpl.arizona.edu/messier/xtra/supp/rasc-g-n.html Galaxies with Proper Names
8. 10.1086/128398 . free . The 1965 Palomar Supernova Search . 1966 . Zwicky . F. . Publications of the Astronomical Society of the Pacific . 78 . 465 . 471 . 1966PASP...78..471Z.
9. Web site: Transient Name Server . SN1953A . . 27 November 2024.