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FEROS Abundance Analysis of 21 Bulgelike SMR Stars

Published online by Cambridge University Press:  09 March 2010

Marina Trevisan ,
Beatriz Barbuy ,
M. Grenon ,
B. Gustafsson  and
L. Pompéia
Marina Trevisan
Affiliation:
Universidade de São Paulo, IAG, Rua do Matão 1226, São Paulo 05508-900, Brazil
Beatriz Barbuy
Affiliation:
Universidade de São Paulo, IAG, Rua do Matão 1226, São Paulo 05508-900, Brazil
M. Grenon
Affiliation:
Observatoire de Genève; Chemin des Maillettes 51, CH-1290 Sauverny, Switzerland
B. Gustafsson
Affiliation:
Dept. of Astronomy & Space Physics, Uppsala University, SE-75120 Uppsala, Sweden
L. Pompéia
Affiliation:
Universidade do Vale do Paraíba, São José dos Campos 12244-000, Brazil
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Abstract

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We analyze a sample of 21 super-metal-rich (SMR) stars, using high-resolution échelle spectra obtained with the Fiber-fed Extended Range Optical Spectrograph at the 1.5m ESO telescope. The metallicities are in the range 0.07 ≤ [Fe/H] ≤ 0.45, 3 of them in common with Pompéia et al. (2009). Geneva photometry, astrometric data from Hipparcos, and radial velocities from CORAVEL are available for these stars. The peculiar kinematics suggests the thin disk close to the bulge as the probable birthplace of these stars (Grenon 1999). From Hipparcos data, it appears that the turnoff of this population indicates an age of 10-11 Gyr (Grenon 1999). Detailed analysis of the sample stars is carried out, and atmospheric parameters are derived from spectroscopic and photometric determinations. Oxygen abundances of these stars are derived, and [O/Fe] overabundances up to +0.35 are found.

Keywords

stars: abundancesfundamental parametersatmosphereslate-type - Galaxy: solar neighbourhood
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S265: Chemical Abundances in the Universe: Connecting First Stars to Planets , August 2009 , pp. 382 - 383
Copyright
Copyright © International Astronomical Union 2010

References

Barbuy, B., Perrin, M.-N., Katz, D., Coelho, P., Cayrel, R., Spite, M., & van't Veer-Menneret, C. 2003, A&A, 404, 661Google Scholar
Bensby, T., Feltzing, S., & Lundström, I. 2004, A&A, 415, 155.Google Scholar
Cayrel, R., Perrin, M.-N., Barbuy, B., & Buser, R. 1991, A&A, 247, 108Google Scholar
Grenon, M. 1989, Ap&SS, 156, 29Google Scholar
Grenon, M. 1999, Ap&SS, 265, 331Google Scholar
Grevesse, N. & Sauval, J. N. 1998, SSRev, 85, 161Google Scholar
Gustafsson, B., Edvardsson, B., Eriksson, K., jørgensen, U. G., Nordlund, Å., & Plez, B. 2008, A&A, 486, 951Google Scholar
Fulbright, J. P., McWilliam, A., Rich, , & Michael, R.. 2007, ApJ, 661, 1152CrossRefGoogle Scholar
Kaufer, A., Stahl, O., Tubbesing, S., Norregaard, P., Avila, G., Francois, P., Pasquini, L., & Pizzella, A. 2000, Proc. SPIE, 4008, 459CrossRefGoogle Scholar
Lecureur, A., Hill, V., Zoccali, M., Barbuy, B., Gómez, A., Minniti, D., Ortolani, S., & Renzini, A. 2007, A&A, 465, 799Google Scholar
Melèndez, J., Asplund, M., Alves-Brito, A., Cunha, K., Barbuy, B., Bessell, M. S., Chiappini, C., Freeman, K. C., Ramírez, I., Smith, V. V., & Yong, D. 2008, A&A, 484, 21Google Scholar
Pompéia, et al. 2009, in preparation.Google Scholar
Stetson, P. B. & Pancino, E. 2008, PASP, 120, 1332SGoogle Scholar