We compile published spectroscopic data and [O III] magnitudes of almost 500 extragalactic planetary nebulae (PNe) in 13 galaxies of various masses and...
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PublicaciónA study of extragalactic planetary nebulae populations based on spectroscopy. I. Data compilation and first findings
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PublicaciónA study of the neglected Galactic H ii region NGC 2579 and its companion ESO 370-9
Context: The Galactic H ii region NGC 2579 has stayed undeservedly unexplored due to identification problems which persisted until recently. Both NGC 2579 and...
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PublicaciónA wealth of new planetary nebulae from the IPHAS survey
We report on the current status of the search for planetary nebulae (PNe) in the IPHAS survey, the 1800 square degree H-alpha survey of the Northern Galactic...
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PublicaciónA window on the efficiency of the s-process in AGB stars: chemical abundances of n-capture elements in the planetary nebula NGC 3918
The chemical content of the planetary nebula NGC 3918 is investigated through deep, high-resolution (R˜40,000) UVES at VLT spectrophotometric data. We identify...
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PublicaciónAbell 30 - A binary central star among the born-again planetary nebulae
Eight planetary nebulae have been identified as 'born-again', a class of object typified by knotty secondary ejecta having low masses (${\sim}10^{-4}$ M ☉) with...
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PublicaciónAbell 41: nebular shaping by a binary central star?
We present the first detailed spatio-kinematical analysis and modelling of the planetary nebula Abell 41, which is known to contain the well-studied close...
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PublicaciónAbell 41: shaping of a planetary nebula by a binary central star
We present the first detailed spatiokinematical analysis and modelling of the planetary nebula Abell 41, which is known to contain the well-studied close-binary...
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PublicaciónAbundance gradient for 13 planetary nebulae in the Galaxy
Via optical low-resolution long slit spectroscopy conducted at the 2.5 m INT in La Palma, He, O, N, Ne, A, and S abundances in 13 extended PN were calculated...
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PublicaciónAbundance Gradients in M33: the Use of Planetary Nebulae
We present our observations of several planetary nebulae in the central zones of the spiral galaxy M33. We combine the abundances we derived for our objects...