A huge new nearby planetary nebula

Details A huge new nearby planetary nebula A huge new nearby planetary nebula

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....87l...5p&link_type=abstract

Astronomy and Astrophysics, vol. 87, no. 3, July 1980, p. L5, L6.

Astronomy and Astrophysics

Astronomy

13

Astronomical Spectroscopy, Planetary Nebulae, Brightness, Sky Surveys (Astronomy), Spectral Energy Distribution, Surface Properties

Scientific paper

A giant, circular (20 x 20 arcmin) new planetary nebula of low surface brightness has been discovered on a Palomar Sky Survey print. As to the angular diameter, it is the second largest ever found and competes with the Helix nebula for being the closest planetary to the solar system. The object is of low excitation and shows a pronounced ionization stratification; the central star exhibits an sdO spectrum

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