276 citations · 481 across the 6 of their papers we have counts for
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astro-ph2004★ 123 cited
The Planetary Nebula System of M33
Robin Ciardullo, Patrick R. Durrell, Mary Beth Laychak +4
We report the results of a photometric and spectroscopic survey for planetary nebulae (PNe) in the Local Group spiral galaxy M33. We use our sample of 152 PNe to derive an [O III]…
astro-ph2002★ 276 cited
Planetary Nebulae as Standard Candles. XII. Connecting the Population I and Population II Distance Scales
Robin Ciardullo, John J. Feldmeier, George H. Jacoby +3
We report the results of [OIII] lambda 5007 surveys for planetary nebulae (PNe) in NGC 2403, 3115, 3351, 3627, 4258, and 5866. Using on-band/off-band [OIII] and H-alpha images, we…