116 citations · 246 across the 8 of their papers we have counts for
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The radial abundance gradient of oxygen towards the Galactic anticentre
C. Esteban, X. Fang, J. Garcia-Rojas +1
We present deep optical spectroscopy of eight HII regions located in the anticentre of the Milky Way. The spectra were obtained at the 10.4m GTC and 8.2m VLT. We determined Te([NII…
Carbon abundances and radial gradients in NGC300 and other nearby spiral galaxies
L. Toribio San Cipriano, J. García-Rojas, C. Esteban
We present preliminary results of deep echelle spectrophotometry of a sample of HII regions along the disk of the Scd galaxy NGC300 obtained with the Ultraviolet and Visual Echelle…
Physical conditions derived from OII recombination lines in planetary nebulae and their implications
Antonio Peimbert, Manuel Peimbert, Gloria Delgado-Inglada +2
Based on high quality observations of multiplet V1 of OII and the NLTE atomic computations for OII we study the density and temperature of a sample of PNe. We find that, in general…
Carbon and oxygen abundances from recombination lines in low-metallicity star-forming galaxies. Implications for chemical evolution
C. Esteban, J. García-Rojas, L. Carigi +4
We present deep echelle spectrophotometry of the brightest emission-line knots of the star-forming galaxies He 2-10, Mkn 1271, NGC 3125, NGC 5408, POX 4, SDSS J1253-0312, Tol 1457-…
Kinematic study of planetary nebulae in NGC 6822
S. N. Flores-Durán, M. Peña, L. Hernández-Martínez +2
By measuring precise radial velocities of planetary nebulae (which belong to the intermediate age population), H II regions, and A-type supergiant stars (which are members of the y…