Tipo de publicación: Con árbitro

  • Publicación
    Carbon abundances and isotope ratios in 70 bright M giants
    Approximate carbon abundances and C-12/C-13 isotope ratios are obtained for 70 M giant stars from intermediate-resolution spectrophotometry of the CO bands near...
  • Publicación
    Carbon Abundances in Compact Galactic Planetary Nebulae: An Ultraviolet Spectroscopic Study with the Space Telescope Imaging Spectrograph (STIS)
    We surveyed a sample of compact Galactic planetary nebulae (PNe) with the Space Telescope Imaging Spectrograph on the Hubble Space Telescope (HST) to determine...
  • Publicación
    Carbon and nitrogen abundances of individual stars in the Sculptor dwarf spheroidal galaxy
    We present [C/Fe] and [N/Fe] abundance ratios and CH(λ4300) and S(λ3883) index measurements for 94 red giant branch (RGB) stars in the Sculptor dwarf spheroidal...
  • Publicación
    Carbon and nitrogen abundances of stellar populations in the globular cluster M 2
    We present CH and CN index analysis and C and N abundance calculations based on the low-resolution blue spectra of red giant branch (RGB) stars in the Galactic...
  • Publicación
    Carbon and oxygen abundance gradients in NGC 300 and M33 from optical recombination lines★
    We present deep spectrophotometry of several H II regions in the nearby low-mass spiral galaxies NGC 300 and M33. The data have been taken with Ultraviolet...
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    Carbon and oxygen abundances from recombination lines in low-metallicity star-forming galaxies. Implications for chemical evolution
    We present deep echelle spectrophotometry of the brightest emission-line knots of the star-forming galaxies He 2-10, Mrk 1271, NGC 3125, NGC 5408, POX 4, SDSS...
  • Publicación
    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...
  • Publicación
    Carbon and oxygen in H II regions of the Magellanic Clouds: abundance discrepancy and chemical evolution
    We present C and O abundances in the Magellanic Clouds derived from deep spectra of H II regions. The data have been taken with the Ultraviolet-Visual Echelle...
  • Publicación
    Carbon dust in the evolved born-again planetary nebulae A 30 and A 78
    We present an infrared (IR) characterization of the born-again planetary nebulae (PNe) A 30 and A 78 using IR images and spectra. We demonstrate that the carbon...