Bibcode
Toribio San Cipriano, L.; García-Rojas, J.; Esteban, C.
Referencia bibliográfica
Highlights of Spanish Astrophysics VIII, Proceedings of the XI Scientific Meeting of the Spanish Astronomical Society held on September 8-12, 2014, in Teruel, Spain, ISBN 978-84-606-8760-3. A. J. Cenarro, F. Figueras, C. Hernández-Monteagudo, J. Trujillo Bueno, and L. Valdivielso (eds.), p. 343-347
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5
2015
Número de citas
0
Número de citas referidas
0
Descripción
We present preliminary results of deep echelle spectrophotometry of a
sample of HII regions along the disk of the Scd galaxy NGC 300 obtained
with the Ultraviolet and Visual Echelle Spectrograph (UVES) at the Very
Large Telescope (VLT) with the aim of detect and measure very faint oii\
and χ permitted lines. We focus this study on the C and O
abundances obtained from faint optical recombination lines (ORLs)
instead of the most commonly used collisionally excited lines (CELs). We
have derived the ionic abundances of C^{2+} from the χ
4267Å RL and O^{2+} from the multiplet 1 of oii\ around
4649Å in several objects. Finally, we have computed the radial
gradients of C/H, O/H and C/O ratios in NGC 300 from RLs, which has
allowed the comparison with similar data obtained by our group in other
nearby spiral galaxies.