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New Grids of Synthetic Spectra for Abundance Derivation and Population Synthesis

Published online by Cambridge University Press:  25 May 2016

B. Barbuy ,
M.-N. Perrin ,
R. Cayrel ,
D. Katz ,
C. Van't Veer  and
R. P. Schiavon
B. Barbuy
Affiliation:
Universidade de SÃo Paulo, C.P. 3386, SÃo Paulo 01060-970, Brazil
M.-N. Perrin
Affiliation:
Observatoire de Paris, 61, av. de l'Observatoire, 75014 Paris, France
R. Cayrel
Affiliation:
Observatoire de Paris, 61, av. de l'Observatoire, 75014 Paris, France
D. Katz
Affiliation:
Observatoire de Paris, 61, av. de l'Observatoire, 75014 Paris, France
C. Van't Veer
Affiliation:
Observatoire de Paris, 61, av. de l'Observatoire, 75014 Paris, France
R. P. Schiavon
Affiliation:
Observatório Nacional, R. Gen. José Cristino 77, 20921-400 Rio de Janeiro, Brazil

Abstract

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We have built a new grid of synthetic spectra in the wavelength range λλ 4600-5600 Å for [α-elements/Fe] = 0.0, +0.2, +0.4 and +0.6. The Lick indices Mg2, Mgb, Fe5270 and Fe5335 are measured in all grid spectra, and their behaviour with stellar parameters is studied.

For the calculation of this new grid, the set of atomic and molecular constants was revised and model atmospheres with overshooting and mixing length parameters appropriate to reproduce the wings of the Hβ line (suitable to indicate temperatures) were computed. We also present a grid in the wavelength range λλ 6000 – 10200 Å. A computation of a high-resolution grid of spectra in the range λλ 3800–7000 Å, as well as a full grid in the range λλ 3000–10200 Å, to be further used in conjunction with evolutionary population synthesis models, are also underway.

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. 365 - 368
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

Allard, F., Hauschildt, P.H. 1995, ApJ, 445, 433 CrossRefGoogle Scholar
Baraffe, I., Chabrier, G., Allard, F., Hauschildt, P.H. 1995, ApJ, 446, L35 CrossRefGoogle Scholar
Barbuy, B. 1994, ApJ, 430, 218 CrossRefGoogle Scholar
Barbuy, B., Perrin, M.-N., Cayrel, R., Katz, D., van't Veer, C. 1998, in prep.Google Scholar
Bruzual, G., Chariot, S. 1998, in prep.Google Scholar
Burstein, D., Faber, S.M., Gaskell, C.M., Krumm, N. 1984, ApJ, 287, 56 CrossRefGoogle Scholar
Buzzoni, A., Gariboldi, G., Mantegazza, L. 1992, AJ, 103, 1814 CrossRefGoogle Scholar
Cayrel, R., Perrin, M.-N., Barbuy, B., Buser, R. 1991, A&A, 247, 108 Google Scholar
Faber, S.M., Friel, E.D., Burstein, D., Gaskell, C.M. 1985, ApJS, 57, 711 CrossRefGoogle Scholar
Gorgas, J., Faber, S.M., Burstein, D., Gonzalez, J.J., Courteau, Stéphane, Prosser, C. 1993, ApJS, 85, 153 CrossRefGoogle Scholar
Grevesse, N., Noels, A., Sauval, J. 1996, in: ASP Conf. Ser. 99, (eds.) Holt, S.S. & Sonneborn, G., p. 117 Google Scholar
Gulati, R.K., Malagnini, M.L., Morossi, C. 1993, ApJ, 413, 166 CrossRefGoogle Scholar
Fuhr, J.R., Martin, G.A., Wiese, W.L. 1988, Atomic Transition Probabilities: Iron through Nickel , Journal of Physical and Chemical Reference Data, vol. 17, suppl. no. 4 Google Scholar
Idiart, T., Freitas Pacheco, J.A., Costa, R.D.D. 1996, AJ, 111, 1169 CrossRefGoogle Scholar
Kurucz, R. 1992, in: The stellar populations of galaxies , IAU Symp. 149, (eds.) Barbuy, B. & Renzini, A., Kluwer Acad. Press, p. 225 CrossRefGoogle Scholar
Martin, G.A., Fuhr, J.R., Wiese, W.L. 1988, Atomic Transition Probabilities: Scandium through Manganese , Journal of Physical and Chemical Reference Data, vol. 17, suppl. no. 3 Google Scholar
Meliani, M.T., Barbuy, B., Perrin, M.-N. 1995, A&A, 300, 349 Google Scholar
Perrin, M.-N., Friel, E.D., Bienaymé, O., Cayrel, R., Barbuy, B., Boulon, J. 1995, A&A, 298, 107 Google Scholar
Plez, B., Brett, J.M., Nordlund, A. 1992, A&A, 256, 251 Google Scholar
Schiavon, R.P., Barbuy, B. 1998, ApJ, in press Google Scholar
Trager, S.C., Worthey, G., Faber, S.M., Burstein, D., González, J.J. 1998, ApJS, 116, 1 CrossRefGoogle Scholar
Wiese, W.L., Martin, G.A., Fuhr, J.R. 1969, Atomic Transition Probabilities: Sodium through Calcium , Journal of Physical and Chemical Reference Data, NSRDS-NBS-22CrossRefGoogle Scholar
Worthey, C., Faber, S.M., Gonzalez, J.J., Burstein, D. 1994, ApJS, 94, 687 CrossRefGoogle Scholar