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The planetary nebulae luminosity function and distances to the Virgo, Hydra i, and Coma Clusters

Published online by Cambridge University Press:  26 February 2013

Magda Arnaboldi ,
Alessia Longobardi ,
Ortwin Gerhard  and
S. Okamura
Magda Arnaboldi
Affiliation:
ESO, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany email: [email protected] INAF, Oss. Astr. di Pino Torinese, 10025 Pino Torinese, Italy
Alessia Longobardi
Affiliation:
Max-Planck-Institut für Extraterrestrische Physik, Postfach 1312, 85741 Garching, Germany
Ortwin Gerhard
Affiliation:
Max-Planck-Institut für Extraterrestrische Physik, Postfach 1312, 85741 Garching, Germany
S. Okamura
Affiliation:
Hosei University, Faculty of Science and Engineering, Department of Advanced Sciences, Tokyo 184-8584, Japan
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Abstract

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The luminosity function of planetary nebula populations in galaxies at distances within 10–15 Mpc exhibits a cut-off at bright magnitudes and a functional form that is observed to be invariant among different galactic morphological types. Therefore, it is used as a secondary distance indicator applicable to both early- and late-type galaxies. Recent deep surveys of planetary nebula populations in brightest cluster galaxies (BCGs) seem to indicate that their luminosity functions deviate from those observed in the nearby galaxies. We discuss the evidence for such deviations in the Virgo Cluster, and indicate which physical mechanisms may alter the evolution of a planetary nebula envelope and its central star in the halo of BCGs. We then discuss preliminary results for distances to the Virgo, Hydra i, and Coma Clusters based on the observed planetary nebulae luminosity functions.

Keywords

stars: AGB and post-AGBplanetary nebulae: generalgalaxies: elliptical and lenticulargalaxies: cD
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S289: Advancing the Physics of Cosmic Distances , August 2012 , pp. 287 - 291
Copyright
Copyright © International Astronomical Union 2013

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