Services on Demand
Journal
Article
Indicators
- Cited by SciELO
- Access statistics
Related links
- Similars in SciELO
Share
Revista mexicana de astronomía y astrofísica
Print version ISSN 0185-1101
Rev. mex. astron. astrofis vol.44 n.2 Ciudad de México Oct. 2008
The Helium and heavy elements enrichment of the Galactic Disk
L. Carigi1,2 and M. Peimbert1
1 Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 70264, 04510 México, D. F., México. (carigi@astroscu.unam.mx, lcarigi@uclan.ac.uk).
2 Centre for Astrophysics, University of Central Lancashire, Preston, Lancashire, PR1 2HE, United Kingdom. (peimbert@astroscu.unam.mx).
Received 2008 June 23
Accepted 2008 July 18
RESUMEN
Presentamos modelos de evolución química para el disco de nuestra galaxia. También presentamos una nueva determinación de X, Y, y Z para M17, una región H de nuestra galaxia rica en elementos pesados. Comparamos nuestros modelos del disco galáctico con las abundancias de las regiones H . El valor predicho por nuestro modelo para ΔY/ΔO es muy similar al valor que obtenemos por medio de las observaciones de M17 y la abundancia primordial de helio, Yp. A partir de M17 y Yp obtenemos que ΔY/ΔZ = 1.97 ± 0.41, resultado que concuerda con dos determinaciones de ΔY/ΔZ, obtenidas a partir de observaciones de estrellas enanas K de la vecindad solar, que corresponden a 2.1 ± 0.4 y 2.1 ± 0.9 respectivamente. Nuestros modelos ajustan razonablemente bien el valor de O/H con el que se formó el Sol.
ABSTRACT
We present chemical evolution models for the Galactic disk. We also present a new determination of X, Y, and Z for M17 a Galactic metalrich H region. We compare our models for the Galactic disk with the Galactic H regions abundances. The ΔY/ΔO ratio predicted from the Galactic chemical evolution model is in very good agreement with the ΔY/ΔO value derived from M17 and the primordial helium abundance, Yp, taking into account the presence of temperature variations in this H region. From the M17 observations we obtain that ΔY/ΔZ = 1.97 ±0.41, in excellent agreement with two ΔY/ΔZ determinations derived from K dwarf stars of the solar vicinity that amount to 2.1 ± 0.4 and 2.1 ± 0.9 respectively. We also compare our models with the solar abundances. The solar and Orion nebula O/H values are in good agreement with our chemical evolution model.
Key Words: galaxies: abundances galaxies: evolution H II regions ISM: abundances ISM: individual (M17, Orion nebula) Sun: abundances.
DESCARGAR ARTÍCULO EN FORMATO PDF
REFERENCES
Akerman, C. J., Carigi, L., Nissen, P. E., Pettini, M., & Asplund, M. 2004, A & A, 414, 931 [ Links ]
Allen, C., Carigi, L., & Peimbert, M. 1998, ApJ, 494, 247 [ Links ]
Allende Prieto, C. 2007, in ASP Conf. Ser. 384, 14th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, ed. G. van Belle (San Francisco: ASP), preprint (astroph/0702429) [ Links ]
Aller, L. H. 1984, Physics of Thermal Gaseous Nebulae (Dordretch: Reidel) [ Links ]
Anders, E., & Grevesse, N. 1989, Geochim. Cosmochim. Acta, 53, 197 [ Links ]
Arnett, D. 1991, in ASP Conf. Ser. 20, Frontiers of Stellar Evolution, ed. D. L. Lambert (San Francisco: ASP), 389 [ Links ]
Arzumanov, S., et al. 2000, Phys. Lett. B, 483, 15 [ Links ]
Asplund, M., Grevesse, N., & Sauval, A. J. 2005, in ASP Conf. Ser. 336, Cosmic Abundances as Records of Stellar Evolution and Nucleosynthesis, ed. F. N. Bash & T. G. Barnes (San Francisco: ASP), 25 [ Links ]
Bahcall, J. N., Serenelli, A. M., & Basu, S. 2006, ApJS, 165, 400 [ Links ]
Basu, S., & Antia, H. M. 2004, ApJ, 606, L85 [ Links ]
. 2008, Phys. Rep., 457, 217 [ Links ]
Benjamin, R. A., Skillman, E. D., & Smits, D. P. 2002, ApJ, 569, 288 [ Links ]
Caffau, E., et al. 2008, A & A, preprint (arXiv:0805.4398) [ Links ]
Carigi, L. 1994, ApJ, 424, 181 [ Links ]
. 1996, RevMexAA, 32, 179 [ Links ]
. 2000, RevMexAA, 36, 171 [ Links ]
Carigi, L., Peimbert, M., Esteban, C., & GarcíaRojas, J. 2005, ApJ, 623, 213 [ Links ]
Casagrande, L., Flynn, C., Portinari, L., Girardi, L., & Jiménez, R. 2007, MNRAS, 382, 1516 [ Links ]
Centeno, R., & SocasNavarro, H. 2008, ApJ, 682, L61 [ Links ]
Chiappini, C., Matteucci, F., & Ballero, S. K. 2005, A & A, 437, 429 [ Links ]
Chiappini, C., Matteucci, F., & Meynet, G. 2003, A & A, 410, 257 [ Links ]
Chieffi, A., & Limongi, M. 2002, ApJ, 577, 281 [ Links ]
Chiosi, C., & Matteucci, F. 1982, A & A, 105, 140 [ Links ]
Cunha, K., Hubeny, I., & Lanz, T. 2006, ApJ, 647, L143 [ Links ]
Deharveng, L., Peña, M., Caplan, J., & Costero, R. 2000, MNRAS, 311, 329 [ Links ]
Dias, W. S., Alessi, B. S., Moitinho, A., & Lépine, J. R. D. 2002, A & A, 389, 871 [ Links ]
Dunkley, J., et al. 2008, ApJ, submitted (arXiv:0803.0586) [ Links ]
Esteban, C., GarcíaRojas, J., Peimbert, M., Peimbert, A., Ruiz, M. T., Rodríguez, M., & Carigi, L. 2005, ApJ, 618, L95 [ Links ]
Esteban, C., Peimbert, M., GarcíaRojas, J., Ruiz, M. T., Peimbert, A., & Rodríguez, M. 2004, MNRAS, 355, 229 [ Links ]
Esteban, C., Peimbert, M., TorresPeimbert, S., & Escalante, V. 1998, MNRAS, 295, 401 [ Links ]
Esteban, C., Peimbert, M., TorresPeimbert, S., & GarcíaRojas J. 1999, RevMexAA, 35, 65 [ Links ]
Fenner, Y., & Gibson, B. K. 2003, PASA, 20, 189 [ Links ]
GarcíaRojas, J., Esteban, C., Peimbert, A., Rodriguez, M., Peimbert, M., & Ruiz, M. T. 2007, RevMexAA, 43, 3 [ Links ]
Gibson, B. K. 1997, MNRAS, 290, 471 [ Links ]
Gibson, B. K., MacDonald, A. J., SánchezBlázquez, P., & Carigi, L. 2006, in The MetalRich Universe, ed. G. Israelian & G. Meynet (Cambridge: Cambridge Univ. Press), preprint (astroph/0611879) [ Links ]
Goldberg, L., Muller, E. A., & Aller, L. H. 1960, ApJS, 5, 1 [ Links ]
González Delgado, R. M., Cervino, M., Martins, L. P., Leitherer, C., & Hauschildt, P. H. 2005, MNRAS, 357, 945 [ Links ]
González Delgado, R. M., Leitherer, C., & Heckman, T. M. 1999, ApJS, 125, 489 [ Links ]
Grevesse, N., & Sauval, A. J. 1998, Space Sci. Rev., 85, 161 [ Links ]
Hirschi, R. 2007, A & A, 461, 571 [ Links ]
Hirschi, R., Meynet, G., & Maeder, A. 2005, A & A, 433, 1013 [ Links ]
Holweger, H. 2001, in AIP Conf. Proc. 598, Solar and Galactic Composition, ed. R. F. WimmerSchweingruber (New York: AIP), 23 [ Links ]
Jiménez, R., Flynn, C., MacDonald, J., & Gibson, B. K. 2003, Science, 299, 1552 [ Links ]
Keenan, F. P., Aller, L. H., Ramsbottom, C. A., Bell, K. L., Crawford, F. L., & Hyung, S. 2000, Publ. Natl. Acad. Sci., 97, 4551 [ Links ]
Kingdon, J., & Ferland, G. 1995, ApJ, 442, 714 [ Links ]
Kroupa, P., Tout, C. A., & Gilmore, G. 1993, MNRAS, 262, 545 [ Links ]
Lambert, D. L. 1968, MNRAS, 138, 143 [ Links ]
Lanz, T., Cunha, K., Holzman, J., & Hubeny, I. 2008, ApJ, 678, 1342 [ Links ]
Leone, F., & Lanzafame, A. C. 1998, A & A, 330, 306 [ Links ]
Liu, X.W., Storey, P. J., Barlow, M. J., Danziger, I. J., Cohen, M., & Bryce, M. 2000, MNRAS, 312, 585 [ Links ]
Maeder, A. 1992, A & A, 264, 105 [ Links ]
Marigo, P., Bressan, A., & Chiosi, C. 1996, A & A, 313, 545 [ Links ]
. 1998, A & A, 331, 580 [ Links ]
Mathews, G. J., Kajino, T., & Shima, T. 2005, Phys. Rev. D, 71, 021302 [ Links ]
McWilliam, A., Matteucci, F., Ballero, S., Rich, R. M., Fulbright, J. P., & Cescutti, G. 2007, AJ, submitted (arXiv:0708.4026) [ Links ]
Meynet G., & Maeder A. 2002, A & A, 390, 561 [ Links ]
Osterbrock D. E., Tran, H. D., & Veilleux, S. 1992, ApJ, 389, 196 [ Links ]
Peimbert, A., Peimbert, M., & Luridiana, V. 2002, ApJ, 565, 668 [ Links ]
Peimbert, M. 1967, ApJ, 150, 825 [ Links ]
Peimbert, M., & Costero, R. 1969, Bol. Obs. Tonantzintla y Tacubaya, 5, 3 [ Links ]
Peimbert, M., Luridiana, V., & Peimbert, A. 2007, ApJ, 666, 636 [ Links ]
Peimbert, M., & TorresPeimbert, S. 1977, MNRAS, 179, 217 [ Links ]
Peimbert, M., TorresPeimbert, S., & Ruiz, M. T. 1992, RevMexAA, 24, 155 (PTR) [ Links ]
Pilyugin, L. S. 2003, A & A, 401, 557 [ Links ]
Porter, R. L., Bauman, R. P., Ferland, G. J., & MacAdam, K. B. 2005, ApJ, 622L, 73 [ Links ]
Porter, R. L., Ferland, G. J., & MacAdam, K. B. 2007, ApJ, 657, 327 [ Links ]
Portinari, L., Chiosi, C., & Bressan, A. 1998, A & A, 334, 505 [ Links ]
Ross, J. E., & Aller, L. H. 1976, Science, 191, 1223 [ Links ]
Sawey, P. M. J., & Berrington, K. A. 1993, At. Data Nucl. Data Tables, 55, 81 [ Links ]
Serebrov, A., et al. 2005, Phys. Lett. B, 605, 72 [ Links ]
Storey, P. J., & Hummer, D. G. 1995, MNRAS, 272, 41 [ Links ]
Thielemann, F. K., Nomoto, K., & Hashimoto, M. 1993, in Origin and Evolution of the Elements, ed. N. Prantzos, et al. (Cambridge: Cambridge Univ. Press), 297 [ Links ]
Woosley, S. E., & Weaver, T. A. 1995, ApJS, 101, 181 [ Links ]