This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Abell 78" – news · newspapers · books · scholar · JSTOR(December 2021) (Learn how and when to remove this message)
Abell 78
Emission nebula
Planetary nebula
As Seen From Mount Lemmon Sky Center
Observation data: J2000.0 epoch
Right ascension
21h 35m 29.376s[1]
Declination
+31° 41m 45.6s[1]
Constellation
Cygnus
Physical characteristics
Radius
1.4 ly
Designations
PK 081-14.1, PN G 081.2-14.9, Abel 64, ARO 174, 2MASS J21352938+3141453, CSI+31-21334, UBV 18570, UBV M 44681
See also: Lists of nebulae
Abell 78 is a planetary nebula located in the constellation of Cygnus. It has a fainter halo consisting mostly hydrogen, and an inner elliptical ring that is mostly made of helium.
The central star of the planetary nebula has a spectral type of [WC5], similar to that of a carbon-rich Wolf–Rayet star.[1]
^ abcGonzález-Santamaría, I.; Manteiga, M.; Manchado, A.; Ulla, A.; Dafonte, C.; López Varela, P. (2021). "Planetary nebulae in Gaia EDR3: Central star identification, properties, and binarity". Astronomy & Astrophysics. 656: A51. arXiv:2109.12114. Bibcode:2021A&A...656A..51G. doi:10.1051/0004-6361/202141916. S2CID 237940344.
Abell78 is a planetary nebula located in the constellation of Cygnus. It has a fainter halo consisting mostly hydrogen, and an inner elliptical ring that...
barium central star binary in the Type I diamond ring planetary nebula Abell 70". Monthly Notices of the Royal Astronomical Society. 419 (1): 39–49....
George O. Abell in 1958 using plates from POSS, and extended to the southern hemisphere by Abell, Corwin and Olowin in 1987. The name "Abell" is also commonly...
about 20% of planetary nebulae are spherically symmetric (for example, see Abell 39). A wide variety of shapes exist with some very complex forms seen. Planetary...
Global Information
