Sh 2-9
| Emission nebula | |
|---|---|
| H II region | |
.jpg) Image of Sh 2-9 with star Sigma Scorpii at the center | |
| Observation data: J2000.0 epoch | |
| Right ascension | 16h 21m 11.31s |
| Declination | -25d 35m 34.05 |
| Distance | 568 ly (174 pc) |
| Apparent magnitude (V) | 2.89 |
| Constellation | Scorpius |
| Designations | Gum 65, LBN 1101, HD 147165, IRAS 16181-2528[1] |
Sh 2-9, also known as Gum 65, is combination emission and reflection nebula in the Scorpius constellation, surrounding the multiple star system Sigma Scorpii. Sigma Scorpii is 1° to the northwest of Messier 4,[2][3] and the nebula can be easily seen with small telescopes.
Sharpless 9 is a red emission nebula that surrounds the star Sigma Scorpii.[3] It is thought the star Sigma Scorpii, a variable giant star, is ionizing this region.[4] It is also recorded as reflection nebula C130.[5]
This region is noted as both an emission and reflection nebula, although sometimes only one aspect is noted.[6][3]
The magnitude 1.1 Antares is 2° to the southeast of this nebula.[3]
One of strongest 2.3 GHz sources in the region coincides with Sharpless 9.[5]
There is a radio source on the edge, and it has been proposed that this is because there is a collision between this nebula and the dark nebula Kh 527.[5]
Catalogs
[edit]Examples:[5]
- Sharpless 9
- Gum 65
- Cederblad 140
References
[edit]- ↑ "Sh 2-9". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2026-07-18.
- ↑ "SH2-9". SharplessCatalog.Com. Sharpless Catalog.
- 1 2 3 4 Abrams, Bernard; Stecker, Michael (2012-12-06). Structures in Space: Hidden Secrets of the Deep Sky. Springer Science & Business Media. ISBN 9781447104414.
- ↑ "Sh 2-9". galaxymap.org. Retrieved 2026-07-18.
- 1 2 3 4 E. E. Baart; et al. (Dec 1980). "A 2.3 GHz radio continuum map of the upper Scorpio region". Astronomy and Astrophysics. 92: 156. Bibcode:1980A&A....92..156B.
- ↑ Gilmour, Jess K. (2003). The Practical Astronomer's Deep-sky Companion. Springer Science & Business Media. ISBN 9781852334741.
External links
[edit]- Image of Sharpless-2 9 Archived 2022-10-05 at the Wayback Machine
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