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Subaru + FOCAS observations of PNs in NGC 821

Published online by Cambridge University Press:  15 December 2006

A. M. Teodorescu ,
R. H. Méndez  and
A. Riffeser
A. M. Teodorescu
Affiliation:
Institute for Astronomy, Univ. of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA email: ana@ifa.hawaii.edu, mendez@ifa.hawaii.edu
R. H. Méndez
Affiliation:
Institute for Astronomy, Univ. of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA email: ana@ifa.hawaii.edu, mendez@ifa.hawaii.edu
A. Riffeser
Affiliation:
Universitäts-Sternwarte München, Scheinerstrasse 1, D-81679 München, Germany, email: arri@usm.uni-muenchen.de
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Abstract

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We present preliminary photometry of 122 PNs discovered in the elliptical galaxy NGC 821. We build the PN luminosity function (PNLF), which gives a distance modulus m - M = 31.9$\pm$0.3, in good agreement, within the uncertainties, with the SBF distance modulus 31.91$\pm$0.17 obtained by Tonry et al. (2001).

Keywords

planetary nebulae: general; galaxies: individual (NGC 821)distances and redshiftselliptical and lenticular
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S234: Planetary Nebulae in our Galaxy and Beyond , April 2006 , pp. 527 - 528
Copyright
© 2006 International Astronomical Union