Chemical abundances of the H II regions NGC 5461 and NGC 5471 in M 101, derived from echelle spectrophotometry

Bibcode
2003IAUS..212..730L
Luridiana, Valentina; Esteban, César; Peimbert, Manuel; Peimbert, Antonio
Bibliographical reference

A Massive Star Odyssey: From Main Sequence to Supernova, Proceedings of IAU Symposium #212, held 24-28 June 2001 in Lanzarote, Canary island, Spain. Edited by Karel van der Hucht, Artemio Herrero, and Esteban, César. San Francisco: Astronomical Society of the Pacific, 2003., p.730

Advertised on:
0
2003
Number of authors
4
IAC number of authors
1
Citations
0
Refereed citations
0
Description
We present high resolution spectroscopic data of the two giant extragalactic HII regions NGC 5461 and NGC 5471 in M 101. We calculate the physical conditions in the two nebulae with a large number of diagnostics, and determine their chemical abundances by applying ionization correction factors (ICFs) to the observed ionic abundances. The comparison of the ICFs based on photo-ionization models (Luridiana & Peimbert 2001; Luridiana et al. 1999) to those computed following the prescriptions by Mathis & Rosa (1991) shows large discrepancies for several elements, including nitrogen, neon and chlorine.
Type
Non-refereed

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