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

Published online by Cambridge University Press:  26 May 2016

Valentina Luridiana ,
César Esteban ,
Manuel Peimbert  and
Antonio Peimbert
Valentina Luridiana
Affiliation:
Instituto de Astrofísica de Andalucía (CSIC), Camino Bajo de Huétor 24, Apartado 3004, E-18080 Granada, España
César Esteban
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, E-38200 La Laguna, Tenerife, España
Manuel Peimbert
Affiliation:
Instituto de Astronomía (UNAM), Ciudad Universitaria, Apartado Postal 70-264, 04510 México D.F., México
Antonio Peimbert
Affiliation:
Instituto de Astronomía (UNAM), Ciudad Universitaria, Apartado Postal 70-264, 04510 México D.F., México

Abstract

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We present high resolution spectroscopic data of the two giant extragalactic H ii 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
Part 4. Feedback from Massive Stars
Information
Symposium - International Astronomical Union , Volume 212: A Massive Star Odyssey: From Main Sequence to Supernova , 2003 , pp. 730 - 731
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Luridiana, V., Peimbert, M., Leitherer, C. 1999, ApJ 527, 110.CrossRefGoogle Scholar
Luridiana, V., Peimbert, M. 2001, ApJ 553, 633.CrossRefGoogle Scholar
Luridiana, V., Esteban, C., Peimbert, M., Peimbert, A. 2002, RMxAA 38, 97.Google Scholar
Mathis, J.S., Rosa, M.R. 1991, A&A 245, 625.Google Scholar
Torres-Peimbert, S., Peimbert, M., Fierro, J. 1989, ApJ 345, 186.CrossRefGoogle Scholar