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astro-ph2003
A CFH12K Survey of Red Giant Stars in the M81 Group
Patrick R. Durrell, Megan E. DeCesar, Robin Ciardullo +2
We present the preliminary results of a wide-field photometric survey of individual red giant branch (RGB) and asymptotic giant branch (AGB) stars in the M81 group, performed with…
astro-ph2003
Intracluster Planetary Nebulae in Clusters and Groups
John J. Feldmeier, Robin B. Ciardullo, George H. Jacoby +2
We present the results from multiple surveys for intracluster planetary nebulae (IPNe) in nearby galaxy clusters and groups. We find that in the case of clusters, our observations…
astro-ph2003
Distances from Planetary Nebulae
Robin Ciardullo
The [O III] 5007 planetary nebula luminosity function (PNLF) occupies an important place on the extragalactic distance ladder. Since it is the only method that is applicable to all…