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A reappraisal of the chemical composition of the Orion nebula based on Very Large Telescope echelle spectrophotometry
We present Very Large Telescope (VLT) UVES echelle spectrophotometry of the Orion nebula in the 3100-10 400 A range. We have measured the intensity of 555 emission lines, many of them correspondingExpand
Chemical composition of the Orion nebula derived from echelle spectrophotometry
We present echelle spectroscopy in the 3500- to 7060-?… range for two positions of the Orion nebula. The data were obtained using the 2.1-m telescope at Observatorio Astron??mico Nacional in SanExpand
Carbon and Oxygen Galactic Gradients: Observational Values from H II Region Recombination Lines*
We present results of deep echelle spectrophotometry of eight Galactic H ii regions located at Galactocentric distances between 6.3 and 10.4 kpc. The data have been taken with the Very LargeExpand
KECK HIRES SPECTROSCOPY OF EXTRAGALACTIC H II REGIONS: C AND O ABUNDANCES FROM RECOMBINATION LINES*
We present very deep spectrophotometry of 14 bright extragalactic H?II regions belonging to spiral, irregular, and blue compact galaxies. The data for 13 objects were taken with the High ResolutionExpand
Massive star formation in Wolf-Rayet galaxies - IV. Colours, chemical-composition analysis and metallicity–luminosity relations
Aims. We have performed a comprehensive multiwavelength analysis of a sample of 20 starburst galaxies that show a substantial population of very young massive stars, most of them classified asExpand
Optical Recombination Lines of Heavy Elements in Giant Extragalactic H II Regions
We present high-resolution observations of the giant extragalactic H II regions NGC 604, NGC 2363, NGC 5461, and NGC 5471, based on observations taken with the ISIS spectrograph on the WilliamExpand
The Localized Chemical Pollution in NGC 5253 Revisited: Results from Deep Echelle Spectrophotometry*
WepresentechellespectrophotometryofthebluecompactdwarfgalaxyNGC 5253obtainedwiththeVLTUVES. We have measured the intensities of a large number of permitted and forbidden emission lines in four zonesExpand
Carbon, nitrogen, and oxygen galactic gradients : A solution to the carbon enrichment problem
ElevenmodelsofGalacticchemicalevolution,differinginthecarbon,nitrogen,andoxygenyieldsadopted,have been computed to reproduce the Galactic O/H values obtained from H ii regions. All the models fit theExpand
Properties of the ionized gas in HH 202 – II. Results from echelle spectrophotometry with Ultraviolet Visual Echelle Spectrograph
We present results of deep echelle spectrophotometry of the brightest knot of the Herbig– Haro object HH 202 in the Orion Nebula – HH 202-S – using the Ultraviolet Visual Echelle Spectrograph in theExpand
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