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Synthesis of Lick Spectral Indices With Overshooting and No-Overshooting Model Atmospheres

Published online by Cambridge University Press:  25 May 2016

R. K. Gulati  and
M. Chavez
R. K. Gulati
Affiliation:
Instituto Nacional de Astrofisica Optica y Electronica, Apdos. Postales 51 y 216, CP 72000 Puebla, Mexico
M. Chavez
Affiliation:
Instituto Nacional de Astrofisica Optica y Electronica, Apdos. Postales 51 y 216, CP 72000 Puebla, Mexico

Abstract

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Using Lester's version of the Kurucz codes, we have computed a set of models with and without “approximate overshooting”. Based on the new models, we have synthesized the spectra in the wavelength range 4800–5400 Å in order to investigate the role of overshooting and no-overshooting models on the Lick indices. Preliminary results show that the differences between the indices are significant in the case of Hβ and Mgb. We need to investigate further the importance of this convection parameter, by comparing model spectra with observed spectra.

Type
Part 3: Star Formation Processes and Chemical Evolution
Information
Symposium - International Astronomical Union , Volume 192: The Stellar Content of Local Group Galaxies , 1999 , pp. 356 - 362
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

Barbuy, B., Erdelyi-Mendes, M., Milone, A. 1992, A&AS, 93, 235 Google Scholar
Cardiel, N., Gorgas, J. 1997, in preparation Google Scholar
Castelli, F. 1996, in: Model Atmospheres and Spectrum Synthesis , (eds.) Adelman, S.J., Kupka, F. & Weiss, W.W., ASP Conf. Proc. 108, p. 62 Google Scholar
Castelli, F., Gratton, R.G., Kurucz, R.L. 1997, A&A, 318, 841 Google Scholar
Chavez, M., Malagnini, M.L., Morossi, C. 1995, ApJ, 440, 210 CrossRefGoogle Scholar
Chavez, M., Malagnini, M.L., Morossi, C. 1996, ApJ, 471, 726 CrossRefGoogle Scholar
Chavez, M., Malagnini, M.L., Morossi, C. 1997, A&AS, 126, 267 Google Scholar
Faber, S.M. 1973, ApJ, 179, 731 CrossRefGoogle Scholar
Gulati, R.K., Malagnini, M.L., Morossi, C. 1991, A&A, 247, 447 Google Scholar
Gulati, R.K., Malagnini, M.L., Morossi, C. 1993, ApJ, 413, 166 CrossRefGoogle Scholar
Gulati, R.K., Chavez, M. 1998, in preparation Google Scholar
Gustaffson, B., Bell, R.A., Eriksson, K., Nordlund, A. 1975, A&A, 42, 407 Google Scholar
Kunzli, M., North, P., Kurucz, R.L., Nicolet, B. 1997, A&AS, 122, 51 Google Scholar
Kurucz, R.L. 1979, ApJS, 40, 1 CrossRefGoogle Scholar
Kurucz, R.L. 1992, in: The Stellar Population of Galaxies , IAU Symp. 149, (eds.) Barbuy, B. & Renzini, A., Kluwer, Dordrecht, p. 225 CrossRefGoogle Scholar
Kurucz, R.L. 1993, CD-ROM 13, CD-ROM 18, and CD-ROM 19, Cambridge: Smithsonian Astrophys. Obs.Google Scholar
Lester, J.B. 1998, private communication Google Scholar
Mould, J. 1978, ApJ, 220, 434 CrossRefGoogle Scholar
Trager, S.C., Worthey, G., Faber, S.M., Burstein, D., Gonzalez, J.J. 1998, ApJS, 116, 1 CrossRefGoogle Scholar
Tripicco, M.J., Bell, R.A. 1995, AJ, 110, 3035 CrossRefGoogle Scholar
Worthey, G. 1992, PhD thesis, University of California, Santa Cruz Google Scholar
Worthey, G. 1994, ApJS, 95, 107 CrossRefGoogle Scholar