The Nebula around EGB 6/PG 0950+139: Evidence for Ablation of a Jovian Planet?

Details The Nebula around EGB 6/PG 0950+139: Evidence for Ablation of a Jovian Planet? The Nebula around EGB 6/PG 0950+139: Evidence for Ablation of a Jovian Planet?

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...347..910d&link_type=abstract

Astrophysical Journal v.347, p.910

Astronomy and Astrophysics

Astronomy

14

Nebulae: Individual Alphanumeric: Egb 6, Nebulae: Individual Alphanumeric: Pg 0950+139, Nebulae: Planetary

Scientific paper

EGB 6 is a very large planetary nebula whose central star, 0950+ 139, is a hot DA/DAO white dwarf, which is associated with a very compact and dense emission nebulosity (Liebert et al.).
We have derived the parameters of this nebula from a photoionization model, and show it to have solar-like abundances, to have a radius of 5 × 1014 cm (30 AU), and to be characterized by a mean hydrogen particle density of 2.2 × 106 cm-3, and a filling factor of order log ɛ ˜ -3.4. We discuss the origin of this extraordinary nebula, and show that its properties are consistent with the photoionization-driven ablation of a low-density planet or planetary accretion disk at a distance of some 2-4 AU from the central star.

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