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19992011
most citedAstrophysical Quantities of Cepheid Variables Measured with the NPOI

230 citations · 574 across the 9 of their papers we have counts for

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astro-ph2002★ 42 cited

Hubble Space Telescope Expansion Parallaxes of the Planetary Nebulae NGC 6578, NGC 6884, NGC 6891, and IC 2448

Stacy Palen, Bruce Balick, Arsen R. Hajian +3

We have combined two epochs of Hubble Space Telescope WFPC2 imaging data with ground-based expansion velocities to determine distances to three planetary nebulae (NGC 6578, NGC 688…