International audienceAims:We present deep spectrophotometry for a sample of 8 planetary nebulae (PNe) and 12 HII regions distributed throughout the dwarf irregular galaxy NGC 3109, in order to analyze the chemical composition of both types of nebulae. Methods: We describe the observations and data reduction, and present line intensities for the nebular emission lines detected. The physical conditions and the abundances of He, O, Ne, N, S and Ar are derived, using the classical T_e-based method. We confirm our previous identification of PNe and HII regions based on photometry, except for one object, which we argue is a compact HII region rather than a planetary nebula. Results: We find that the chemical composition of the interstellar mediu...
Aims. The chemical behaviour of an ample sample of planetary nebulae (PNe) in NGC 6822 is analysed. ...
International audienceWe have observed 44 planetary nebulae (PNe) in the direction of the Galactic b...
We present mid-infrared Spitzer spectra of 11 planetary nebulae in the Galactic bulge. We derive arg...
International audienceAims:We present deep spectrophotometry for a sample of 8 planetary nebulae (PN...
Aims. We present high-resolution spectroscopy of a number of planetary nebulae (PNe) and H II region...
Images obtained with the ESO VLT and FORS1 in [O III] 5007 on- and off-band as well as r_Gunn filter...
International audienceAims:Images obtained with the ESO VLT and FORS1 in [O iii] 5007 on- and off-ba...
RESUMEN Se analizan datos espectroscópicos de nebulosas planetarias y regiones H II de NGC 3109 y NG...
We present deep spectroscopy of planetary nebulae (PNe) that are associated with the substructures o...
We present new low-resolution (R ~ 800) optical spectra of 22 Galactic planetary nebulae (...
Aims. We aim to derive the chemical behavior of a significant sample of PNe and HII regions in the i...
Context. Planetary nebulae (PNe) abundances are poorly known for those nebulae in the Galactic bulge...
International audienceWe compile published spectroscopic data and [O III] magnitudes of almost 500 e...
International audienceWe have obtained deep optical spectrophotometry of 16 planetary nebulae (PNe) ...
The planetary nebula TS 01 (also called PN G 135.9+55.9 or SBS 1150+599A) with its record-holding lo...
Aims. The chemical behaviour of an ample sample of planetary nebulae (PNe) in NGC 6822 is analysed. ...
International audienceWe have observed 44 planetary nebulae (PNe) in the direction of the Galactic b...
We present mid-infrared Spitzer spectra of 11 planetary nebulae in the Galactic bulge. We derive arg...
International audienceAims:We present deep spectrophotometry for a sample of 8 planetary nebulae (PN...
Aims. We present high-resolution spectroscopy of a number of planetary nebulae (PNe) and H II region...
Images obtained with the ESO VLT and FORS1 in [O III] 5007 on- and off-band as well as r_Gunn filter...
International audienceAims:Images obtained with the ESO VLT and FORS1 in [O iii] 5007 on- and off-ba...
RESUMEN Se analizan datos espectroscópicos de nebulosas planetarias y regiones H II de NGC 3109 y NG...
We present deep spectroscopy of planetary nebulae (PNe) that are associated with the substructures o...
We present new low-resolution (R ~ 800) optical spectra of 22 Galactic planetary nebulae (...
Aims. We aim to derive the chemical behavior of a significant sample of PNe and HII regions in the i...
Context. Planetary nebulae (PNe) abundances are poorly known for those nebulae in the Galactic bulge...
International audienceWe compile published spectroscopic data and [O III] magnitudes of almost 500 e...
International audienceWe have obtained deep optical spectrophotometry of 16 planetary nebulae (PNe) ...
The planetary nebula TS 01 (also called PN G 135.9+55.9 or SBS 1150+599A) with its record-holding lo...
Aims. The chemical behaviour of an ample sample of planetary nebulae (PNe) in NGC 6822 is analysed. ...
International audienceWe have observed 44 planetary nebulae (PNe) in the direction of the Galactic b...
We present mid-infrared Spitzer spectra of 11 planetary nebulae in the Galactic bulge. We derive arg...