47 citations · 298 across the 23 of their papers we have counts for
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The kinematics of the nebular shells around low mass progenitors of PNe with low metallicity
Margarita Pereyra, José Alberto López, Michael G. Richer
We analyze the internal kinematics of 26 Planetary Nebulae (PNe) with low metallicity that appear to derive from progenitor stars of the lowest masses, including the halo PN popula…
The deceleration of nebular shells in evolved planetary nebulae
Margarita Pereyra, Michael G. Richer, José Alberto López
We have selected a group of 100 evolved planetary nebulae (PNe) and study their kinematics based upon spatially-resolved, long-slit, echelle spectroscopy. The data have been drawn…
The Evolution of the Kinematics of Nebular Shells in Planetary Nebulae in the Milky Way Bulge
M. G. Richer, J. A. López, Ma. -T. García-Díaz +3
We study the line widths in the [\ion{O}{3}]5007 and H lines for two groups of planetary nebulae in the Milky Way bulge based upon spectroscopy obtained at the Observatorio A…