412 citations · 3.5k across the 58 of their papers we have counts for
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Confirmation of SBS 1150+599A As An Extremely Metal-Poor Planetary Nebula
George Jacoby, John Feldmeier, Charles F. Claver +4
SBS 1150+599A is a blue stellar object at high galactic latitude discovered in the Second Byurakan Survey. New high-resolution images of SBS 1150+599A are presented, demonstrating…
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…
The Dwarf Spheroidal Companions to M31: Variable Stars in Andromeda VI
Barton J. Pritzl, Taft E. Armandroff, George H. Jacoby +1
We have surveyed Andromeda VI, a dwarf spheroidal galaxy companion to M31, for variable stars using F450W and F555W observations obtained with the Hubble Space Telescope. A total o…
Intracluster Red Giant Stars in the Virgo Cluster
Patrick R. Durrell, Robin Ciardullo, John J. Feldmeier +2
We have used the WFPC2 camera of the Hubble Space Telescope to obtain deep F814W images of a blank field in the Virgo Cluster located 41 arcmin northwest of M87. We perform star co…