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Kinematics of Planetary Nebulae in M 51's Tidal Tail

John Feldmeier·Chris Mihos·Patrick Durrell·Robin Ciardullo·George Jacoby
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Abstract

The galaxy pair NGC 5194/95 (M 51) is one of the closest and best known interacting systems. Despite its notoriety, however, many of its features are not well studied. Extending westward from NGC 5195 is a low surface brightness tidal tail, which can only be seen in deep broadband exposures. Our previous [O III] lambda 5007 planetary nebulae (PN) survey of M 51 recovered this tidal tail, and presented us with a opportunity to study the kinematics of a galaxy interaction in progress. We report the results of a spectroscopy survey of the PN, aimed at determining their kinematic properties. We then use these data to constrain new self-consistent numerical models of the system.

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John Feldmeier, Chris Mihos, Patrick Durrell, Robin Ciardullo, George Jacoby. 2001-12-12. Kinematics of Planetary Nebulae in M 51's Tidal Tail. https://arxiv.org/abs/astro-ph/0112292

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