NGC 3561
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| NGC 3561 | |
|---|---|
| File:Hubble Arp105 WFC3 mstr flat cont FINAL2.jpg Hubble Space Telescope image of elliptical galaxy NGC 3561B (upper left) and spiral galaxy NGC 3561A (lower right), known collectively as Arp 105. | |
| 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] | |
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]
Image gallery
[edit | edit source]-
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.
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References
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- ^ Galaxies with Proper Names
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External links
[edit | edit source]- Error creating thumbnail: File missing Media related to Lua error in Module:Commons_link at line 62: attempt to index field 'wikibase' (a nil value). 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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