New Spectroscopic Observations of the Planetary Nebula PC 11

Details New Spectroscopic Observations of the Planetary Nebula PC 11 New Spectroscopic Observations of the Planetary Nebula PC 11

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pasp..110..458g&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 110, Issue 746, pp. 458-465.

Astronomy and Astrophysics

Astronomy

6

Planetary Nebulae: Individual: Pc 11, Ism: Jets And Outflows

Scientific paper

New observations of the planetary nebula PC 11, made in 1991, are presented and discussed. The object is a compact planetary nebula, small and dense, with a low mass of ionized gas. It is losing matter through one or more jets, formed mainly by O iii. The central star is a binary, with a cool component of spectral type F0-F1 V. The hot component has an energy balance temperature of 105,000 K, a mass of 0.638 M_solar, and very low luminosity, estimated as 11 L_solar, with a radius of the order of 0.01 R_solar. The position of PC 11 in the H-R diagram is peculiar, since it seems incompatible with its being a very young planetary nebula, as suggested by its small size and high density.

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