Morphology & Kinematics of the ‘Born–Again’ Planetary Abell 78

1 January 1993

journal article
Published by Cambridge University Press (CUP) in Symposium - International Astronomical Union

Vol. 155, 388
https://doi.org/10.1017/s0074180900171773

Abstract

Abell 78 is one of a group of planetaries having an old, H–rich nebula surrounding a hot star which has more recently ejected highly–processed, H–deficient material. The A78 central star has O VI emission lines and a 3700 km s⁻¹ hot wind, and is surrounded by knots of very dusty, H-deficient material. These objects are thought to have suffered a late helium shell flash which resulted in the central star (then a white dwarf) returning to the AGB and ejecting highly-processed material.

Keywords

ABELL
A78
KINEMATICS
LATE
WHITE
OLD
MORPHOLOGY
KNOTS
WIND
FLASH

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