The Calibration of the O/H Abundance Indicators for Extragalactic H II Regions Based on O II Recombination Lines

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dc.creatorPeimbert, M.
dc.creatorPeimbert, A.
dc.creatorEsteban, C.
dc.creatorGarcia-Rojas, J.
dc.creatorBresolin, F.
dc.creatorCarigi, L.
dc.creatorRuiz, M. T.
dc.creatorLopez-Sanchez, A. R.
dc.date2006-08-21
dc.date.accessioned2026-07-07T07:19:24Z
dc.date.available2026-07-07T07:19:24Z
dc.descriptionBased on O II recombination lines we present a new calibration (called O II[RL]) of Pagel's O23 indicator to determine the O/H abundance ratio in extragalactic H II regions and emission line galaxies. The O II(RL) calibration produces O/H abundances about a factor of two higher than those derived from the T(4363) method with t2 = 0.00. The O II(RL) calibration has implications for the study of different properties of emission line galaxies such as their metallicity, star formation rate, and initial mass function. The O II(RL) calibration also affects the abundance determinations based on other O/H indicators, that include collisionally excited lines, like those known as O3N2, N2, S23, Ar3O3, and S3O3. We argue that the controversy between the T(4363) method and the photoionization models method to derive O/H values is mainly due to temperature variations inside the observed H II regions.
dc.description8 pages, 3 figures. From the Congference "First Light Science with the Gran Telescopio Canarias" (2006). To appear in RevMexAA, SC
dc.identifierhttps://arxiv.org/abs/astro-ph/0608440
dc.identifierhttp://arxiv.org/abs/astro-ph/0608440
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/114612
dc.subjectAstrophysics
dc.titleThe Calibration of the O/H Abundance Indicators for Extragalactic H II Regions Based on O II Recombination Lines
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