Astronomy:Sh 2-294
From HandWiki
| Emission nebula | |
|---|---|
| H II region | |
| Observation data: J2000 epoch | |
| Right ascension | 07h 16m 35s |
| Declination | −09° 25′ 43″ |
| Distance | 3240[1] pc |
| Apparent dimensions (V) | 7' |
| Constellation | Monoceros |
| Designations | ALS 18684, Gaze-Shajn 115, Strohmeier 8, [YDD2008] 717 |
Sh 2-294, also known as the Octopus Nebula,[2] is a nebula in Monoceros. It was discovered by Wolfgang Strohmeier in 1950, during a photographic survey.[3]
Structure
It is ionized by a single B0 star, MFJ Sh 2-294 4. It has an unusual amount of dust, and is uncommonly red. A star cluster has begun to form in the nebula, with star formation caused by the expansion of the nebula.[4] The nebula contains 38 known young stellar objects, as observed by the Spitzer Space Telescope.[5]
References
- ↑ "Sh 2-294". http://galaxymap.org/cat/view/sharpless/294.
- ↑ "Octopus Nebula (Sh 2-294) | Deep⋆Sky Corner". https://www.deepskycorner.ch/obj/sh2-294.en.php#ref40.
- ↑ Stromeier, W. (February 2, 1950). "Rote Nebel in der Wintermilchstraβe. Mit 1 Textabbildung". Zeitschrift fur Astrophysik 27: 49. https://ui.adsabs.harvard.edu/abs/1950ZA.....27...49S/abstract.
- ↑ Samal, M. R.; Pandey, A. K.; Ojha, D. K.; Ghosh, S. K.; Kulkarni, V. K.; Bhatt, B. C. (December 2, 2007). "A Multiwavelength Study of Galactic H II Region Sh 2-294". The Astrophysical Journal 671 (1): 555–570. doi:10.1086/522941. https://ui.adsabs.harvard.edu/abs/2007ApJ...671..555S/abstract.
- ↑ Samal, M. R.; Pandey, A. K.; Ojha, D. K.; Chauhan, N.; Jose, J.; Pandey, B. (August 2, 2012). "Star Formation and Young Population of the H II Complex Sh2-294". The Astrophysical Journal 755 (1): 20. doi:10.1088/0004-637X/755/1/20. https://ui.adsabs.harvard.edu/abs/2012ApJ...755...20S/abstract.
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