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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2020
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| Online Access: | https://www.redalyc.org/articulo.oa?id=57171663006 https://www.redalyc.org/journal/571/57171663006/ https://www.redalyc.org/journal/571/57171663006/html/ https://www.redalyc.org/journal/571/57171663006/57171663006.epub https://www.redalyc.org/journal/571/57171663006/movil |
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Table of Contents:
- The ADF and the t2 formalism in H II regions based on the upper mass limit of the IMF for the MW L. Carigi A. Peimbert M. Peimbert G. Delgado-Inglada Física, Astronomía y Matemáticas ISM Galaxy evolution abundances HII regions We study in depth the abundance discrepancy problem in H II regions, this time from a different perspective than the usual one: by studying the effect of the upper mass limit (Mup) of the initial mass function (IMF) on the O, C, and He predicted by chemical evolution models for the Milky Way. We use abundances determined with the direct method (DM) and with the temperature independent method (TIM). We compare the predicted abundances at the present time with observations of Orion, M17, and M8 to determine the Mup value of the galactic IMF. From the DM abundances, the models predict an M u p = 25 - 45 M ⊙, while from the TIM, CEMs derive an M u p = 70 - 110 M ⊙. Spiral galaxies with the stellar mass and star formation rate of the MW are predicted to have an M u p ≈ 100 M ⊙. These results support that abundances derived from the TIM are better than those derived from the DM. 2020 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57171663006 https://www.redalyc.org/journal/571/57171663006/ https://www.redalyc.org/journal/571/57171663006/html/ https://www.redalyc.org/journal/571/57171663006/57171663006.epub https://www.redalyc.org/journal/571/57171663006/movil 10.22201/ia.01851101p.2020.56.02.06 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.56