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Sh 2-68 – A Planetary Nebula Leaving it's Mark on the Interstellar Medium

Published online by Cambridge University Press:  26 May 2016

F. Kerber
Affiliation:
ST-ECF, Karl-Schwarzschild-Str.2, D-85748 Garching, Germany
F. Guglielmetti
Affiliation:
STScI, 3700 San Martin Drive, Baltimore, MD 21218, USA
R. Mignani
Affiliation:
ESO, Karl-Schwarzschild-Str.2, D-85748 Garching, Germany
M. Roth
Affiliation:
Las Campanas Observatory, Carnegie Institution of Washington, Casilla 601, La Serena, Chile

Abstract

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Using Hα images from the Southern H-Alpha Sky Survey Atlas (SHASSA) we have discovered a “cometary tail” of ionized matter extending at least 30 arcmin from the main body of the planetary nebula Sh 2-68 (PN G030.6+06.2). This tail is aligned with the proper motion of the central star and is obviously a contrail of material left behind by Sh 2-68 moving in a Galactic Disk orbit. The tail's existence is a direct confirmation of Sh 2-68's interaction with the interstellar medium (ISM) and highlights the possibly important role of the ISM's magnetic field.

Type
Part VII: Nebular Morphology and Dynamics
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

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