activity
19992022
most citedMagnetic-Driven Winds from Post-AGB Stars: Solutions for High Speed Winds and Extreme Collimation

107 citations · 294 across the 13 of their papers we have counts for

collaborators

13 papers

astro-ph.GA2022★ 11 cited

NGC 6153: Reality is complicated

Michael G. Richer, Anabel Arrieta, Lorena Arias +4

We study the kinematics of emission lines that arise from many physical processes in NGC 6153 based upon deep, spatially-resolved, high resolution spectra acquired with the UVES sp…

astro-ph.IM2016★ 11 cited

FRIDA: diffraction-limited imaging and integral-field spectroscopy for the GTC

Alan M. Watson, José A. Acosta-Pulido, Luis C. Álvarez-Núñez +27

FRIDA is a diffraction-limited imager and integral-field spectrometer that is being built for the adaptive-optics focus of the Gran Telescopio Canarias. In imaging mode FRIDA will…

astro-ph.GA2012★ 16 cited

A Detailed Spatiokinematic Model of the Conical Outflow of the Multipolar Planetary Nebula, NGC 7026

D. M. Clark, J. A. López, W. Steffen +1

We present an extensive, long-slit, high-resolution coverage of the complex planetary nebula (PN), NGC 7026. We acquired ten spectra using the Manchester Echelle Spectrometer at Sa…

astro-ph.SR2010★ 22 cited

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…

astro-ph2008★ 27 cited

The Acceleration of the Nebular Shells in Planetary Nebulae in the Milky Way Bulge

Michael G. Richer, Jose Alberto Lopez, Margarita Pereyra +3

We present a systematic study of line widths in the [\ion{O}{3}]5007 and H lines for a sample of 86 planetary nebulae in the Milky Way bulge based upon spectroscopy obtained…

astro-ph2008★ 24 cited

The planetary nebula NGC 1360, a test case of magnetic collimation and evolution after the fast wind

M. T. Garcia-Diaz, J. A. López, G. Garcia-Segura +2

The central star of this nebula has an observed intense magnetic field and the fast wind is no longer present, indicating that a back flow process has probably developed. Long-slit…