Astronomy:Abell 33
| Emission nebula | |
|---|---|
| Planetary nebula | |
 The Abell 33 nebula as seen from Mount Lemmon Observatory | |
| Observation data: J2000 epoch | |
| Right ascension | 09h 39m 09.2s |
| Declination | −02° 48′ 35″ |
| Distance | 2.7 kly (0.83 kpc) ly |
| Apparent magnitude (V) | +12.9 |
| Constellation | Hydra |
| Notable features | Foreground star gives it a "diamond ring" effect |
| Designations | PNG 238.0+34.8, PK 238+34.1, ARO 65 |
Abell 33 (Also called A33 or the Diamond ring nebula) is a faint spherical planetary nebula located 2700 light years away in the constellation of Hydra. It lies just behind the star HD 83535 which has no relation to the nebula.[1] The star HD 83535 is also responsible for the "diamond ring" effect seen in the photograph.
The nebula gets its coloration from the O III emissions (doubly ionized oxygen). The nebula is faint making it difficult to be seen using a telescope. The spherical shape of Abell 33 is mainly caused by its central star not having much of a spin.[2] The nebula shares similar morphology to another nebula with the same spherical shape, the Owl Nebula (M 97), but is much darker than the Owl Nebula.[3]
There is also a galaxy cluster known as Abell 33,[4] because there are two Abell astronomical catalogs, one for planetary nebulae,[5] and one for glaxy clusters.[6]
References
- ↑ "Abell 33 Planetary Nebula in Hydra | Astrodonimaging.com" (in en-US). https://astrodonimaging.com/gallery/abell-33-planetary-nebula-in-hydra/.
- ↑ "Abell 33 – Astrodrudis" (in en-US). https://astrodrudis.com/abell-33/.
- ↑ "Planetary Nebula Abell 33 | Deep⋆Sky Corner" (in en). https://www.deepskycorner.ch/obj/a33.en.php.
- ↑ https://simbad.cds.unistra.fr/simbad/sim-id?Ident=abell+33&submit=submit+id
- ↑ https://en.wikipedia.org/wiki/Abell_Catalog_of_Planetary_Nebulae
- ↑ https://en.wikipedia.org/wiki/Abell_catalogue
- http://www.caelumobservatory.com/gallery/abell33.shtml
- http://www.skyhound.com/observing/archives/mar/A_33.html
External links
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