Ejection of a runaway planetary nebula from M32

Details Ejection of a runaway planetary nebula from M32 Ejection of a runaway planetary nebula from M32

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...234..481b&link_type=abstract

Astrophysical Journal, Part 1, vol. 234, Dec. 1, 1979, p. 481-484. Research supported by the University of Alabama.

Other

3

Planetary Nebulae, Stellar Mass Ejection, Stellar Motions, Astrodynamics, Computerized Simulation, Orbital Mechanics, Radial Velocity, Stellar Systems

Scientific paper

Ford and Jenner have discovered a planetary nebula near M32 with a radial velocity of -474 km/s relative to M32, much too fast for the planetary to be bound to M32. However, the nebula's closeness to M32 and spectral line criteria indicate that the nebula's star originated in M32. Work by Faber and others indicates that M32 has lost much of its mass via tidal action by M31. Computer simulations by Keenan and Innanen of tidal stripping by galaxies of their satellite stellar systems indicate that M32's lost stars should orbit in a thin disk whose plane matches that of M32's orbit. The existence of a disk of lost stars thus oriented which contains a number of planetary nebulae comparable to those in M32 implies that the runaway planetary nebula observed near M32 by Ford and Jenner is quite likely to be a star previously removed from M32 whose orbit is now cutting across M32's orbit

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