Distance to the Planetary Nebula NGC 246 from the Resolved Companion of Its Central Star

Details Distance to the Planetary Nebula NGC 246 from the Resolved Companion of Its Central Star Distance to the Planetary Nebula NGC 246 from the Resolved Companion of Its Central Star

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pasp..111..217b&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 111, Issue 756, pp. 217-220.

Astronomy and Astrophysics

Astronomy

16

Stars: Binaries: Visual, Ism: Planetary Nebulae: Individual: Ngc Number: Ngc 246, Stars: Distances

Scientific paper

The central star of the planetary nebula NGC 246 is a resolved visual binary. We present CCD photometry of the G8-K0 V companion, which is located 3.8" from the hot nucleus. By fitting the companion to the zero-age main sequence, we derive a distance of d=495^+145_-100 pc. This is one of the more secure distances known for a Galactic planetary nebula, but it could be improved still further with a better estimate of the metallicity of the system.

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