NGC 5195
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| Galaxy | List of galaxies |
|---|---|
NGC 5195 (bottom) |
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| Observation data (Epoch J2000) |
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| Constellation | Canes Venatici |
| Right ascension | 13h 29m 59.6s[1] |
| Declination | +47° 15′ 58″[1] |
| Redshift | 465 ± 10 km/s[1] |
| Distance | 25 ± 3 Mly (7.7 ± 1.0 Mpc)[2] |
| Type | SB0_1 pec[1] |
| Apparent dimensions (V) | 5′.8 × 4′.6[1] |
| Apparent magnitude (V) | 10.5[1] |
| Notable features | |
| Other designations | |
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NGC 5195 (also known as M51B) is a small barred spiral galaxy which was transformed into an irregular galaxy due to tidal forces induced by its larger neighbour M51. NGC 5195 is about 25 million light-years away in the constellation Canes Venatici. It was discovered by Pierre Méchain in 1781. NGC 5195 is a satellite galaxy of the famous Whirlpool Galaxy (M51). NGC 5195 is tidally interacting with one M51's spiral arms.
Because of Messier's description, NGC 5195 is sometimes considered part of Messier Object 51; the main galaxy, NGC 5194, is denoted M51 A. Independent of this, NGC 5195 is frequently referred to as M51 B. This galaxy has undergone a close encounter with the larger and more massive M51 several million years ago. During this encounter, it has been significantly distorted from the original disk to an irregular shape. The encounter has also significantly enhanced the spiral structure of M51. It is thought that NGC 5195 has passed M51 roughly along our line of sight and is now behind its large neighbor.
One supernova has been discovered in NGC 5195 so far: Supernova 1945A was found by Humason in this galaxy on April 8, 1945, 6'W and 4'S of the galaxy's nucleus and reached a magnitude of 14.0
[edit] See also
[edit] External links
[edit] References
- ^ a b c d e f g h i j NASA/IPAC Extragalactic Database. Results for NGC 5195. Retrieved on 2006-12-07.
- ^ J. L. Tonry, A. Dressler, J. P. Blakeslee, E. A. Ajhar, A. B. Fletcher, G. A. Luppino, M. R. Metzger, C. B. Moore (2001). "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances". Astrophysical Journal 546 (2): 681-693.
Catagory:Spiral galaxies Catogory:Barred spiral galaxies
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