Context. There are more than 3000 known Galactic planetary nebulae, but only 492 central stars of Galactic planetary nebulae (CSPN) have known spectral types...
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PublicationTowards an improvement in the spectral description of central stars of planetary nebulae
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PublicationTurbulent planetary nebulae around [WC]-type stars
Through a high-resolution spectroscopic survey, we analyze the velocity field of 16 planetary nebulae with [WC]- or wels-type nuclei in comparison with 8...
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PublicationUltraviolet and infrared monitoring of FG Sagittae during 1982-1989 - Evolutionary status
Ultraviolet IUE spectra and infrared JHKL photometry of FG Sge obtained over the period 1982-1989 indicate that the cooling rate of the star observed until...
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PublicationUltraviolet emission line imaging of planetary nebulae with GALEX
GALEX (the Galaxy Evolution Explorer) has provided far-UV(1344-1786Å) and near-UV(1771-2831Å) imaging of several Planetary Nebulae (e.g., Bianchi et al. 2008...
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PublicationUnderstanding Galactic planetary nebulae with precise/reliable nebular abundances
We compare recent precise/reliable nebular abundances - as derived from high-quality optical spectra and the most recent ICFs - in a sample of Galactic...
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PublicationUnveiling low-ionization microstructures in planetary nebulae.
(Hα+[NII])/[OIII] ratio images have been used to search for low-ionization small-scale structures in a sample of 258 planetary nebulae. Radially symmetrical...
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PublicationUnveiling shocks in planetary nebulae
The propagation of a shock wave into a medium is expected to heat the material beyond the shock, producing noticeable effects in intensity line ratios such as...
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PublicationUnveiling the structure of the planetary nebula M 2-48:. Kinematics and physical conditions
The kinematics and physical conditions of the bipolar planetary nebula M 2-48 are analysed from high and low dispersion long-slit spectra. Previous CCD narrow...
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PublicationUnveiling the Structure of the Planetary Nebula M2-48
The PN M2-48 is formed by three main structures, namely, a bipolar central region (CR), a set of knots tracing a semicircular shell surrounding CR, and two...