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A New Population of Planetary Nebulae Discovered in the LMC

Published online by Cambridge University Press:  15 December 2006

Warren A. Reid  and
Quentin A. Parker
Warren A. Reid
Affiliation:
Department of Physics, Macquarie University, Sydney, NSW, 2109, Australia email: [email protected] Present address: Macquarie University, Sydney, NSW, 2109, Australia
Quentin A. Parker
Affiliation:
Department of Physics, Macquarie University, Sydney, NSW, 2109, Australia email: [email protected] Anglo-Australian Observatory, Sydney, NSW, 2102 Australia, email: [email protected]
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Abstract

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We report our discovery of 471 planetary nebulae (PNe) in the central 25~deg$^{2}$ region of the Large Magellanic Cloud (LMC) following confirmatory two-degree Field (2dF) spectroscopy on the Anglo-Australian Telescope (AAT). Candidate emission sources were discovered using deep, high resolution UKST stacked Short Red (SR) and H$\alpha$ images which go deeper than any previously available. The two digitized stacks were then merged to reveal emission sources. The new PNe have implications for the LMC PN luminosity function, kinematics, abundance gradients, chemical evolution and the initial to final mass relation for low to intermediate mass stars via the AGB halos revealed on the H$\alpha$ map. Excitation classes are presented.

Keywords

Magellanic CloudsSurveysPlanetary Nebulae
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S234: Planetary Nebulae in our Galaxy and Beyond , April 2006 , pp. 487 - 488
Copyright
© 2006 International Astronomical Union