Publication: Multiwavelength optical observations of two chromospherically active binary systems: v789 mon and gz leo
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2009-04
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Gálvez, M. C.
Castro Rubio, Elisa de
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IOP Publishing ltd
Abstract
This paper describes a multiwavelength optical study of chromospheres in two X-ray/EUV-selected active binary stars with strong H alpha emission, V789 Mon (2RE J0725-002) and GZ Leo (2RE J1101+223). The goal of the study is to determine radial velocities and fundamental stellar parameters in chromospherically active binary systems in order to include them in the activity-rotation and activity-age relations. We carried out high-resolution echelle spectroscopic observations and applied spectral-subtraction technique in order to measure emission excesses due to chromosphere. The detailed study of activity indicators allowed us to characterize the presence of different chromospheric features in these systems and enabled to include them in a larger activity-rotation survey. We computed radial velocities of the systems using cross-correlation with the radial velocity standards. The double-line spectral binarity was confirmed and the orbital solutions improved for both systems. In addition, other stellar parameters such as spectral types, projected rotational velocities (v sin i) and the equivalent width of the lithium Li i λ6707.8
Å absorption line were determined.
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© 2009. The American Astronomical Society. All rights reserved. This work was supported by the Spanish "Programa Nacional de Astronomía y Astrofísica" under grants AYA2005-02750 and AYA2008-00695, and the "Comunidad de Madrid" under PRICIT project S-0505/ESP-0237 (ASTROCAM).
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Arévalo, M. J., & Lázaro, C. 1999, AJ, 118, 1015
Barden, S. C. 1985, ApJ, 295, 162
Beavers, W. I., Eitter, J. J., Ketelsen, D. A., & Oesper, D. A. 1979, PASP, 91, 698
Buzasi, D. L. 1989, PhD thesis, Pennsylvania State Univ.
Chester, M. M. 1991, PhD thesis, Pennsylvania State Univ.
Cutispoto, G., Pastori, L., Tagliaferri, G., Messina, S., & Pallavicini, R. 1999, A&AS, 138, 87
Eggen, O. J. 1984, ApJS, 55, 597
Eggen, O. J. 1989, PASP, 101, 366
ESA 1997, The Hipparcos and Tycho Catalogues, ESA SP-1200
Favata, F., Barbera, M., Micela, G., & Sciortino, S. 1993, A&A, 277, 428
Fekel, F. C., Bopp, B. W., Africano, J. L., Goodrich, B. D., Palmer, L. H., Quigley, R., & Simon, T. 1986, AJ, 92, 1150
Fekel, F. C., & Henry, G. W. 2000, ApJ, 120, 3265
Gálvez, M. C. 2005, PhD thesis, Universidad Complutense de Madrid
Gálvez, M. C., Montes, D., Fernández Figueroa, M. J., López Santiago, J., De Castro, E., & Cornide, M. 2002, A&A, 389, 524 (Paper IV)
Gálvez, M. C., Montes, D., Ramsey, L. W., Fernández Figueroa, M. J., De Castro, E., & Cornide, M. 2003, in Proc. 5th Scientific Meeting of the Spanish Astronomical Society (SEA), Highlights of Spanish Astrophysics III, ed. J. Gallego, J. Zamorano, & N. Cardiel (Dordrecht: Kluwer) 474
Gálvez, M. C., Montes, D., Fernández Figueroa, M. J., De Castro, E., & Cornide, M. 2007, A&A, 472, 587 (Paper V)
Hall, J. C. 1996, PASP, 108, 313
Hall, J. C., & Ramsey, L. W. 1992, AJ, 104, 1942
Høg, E., et al. 2000, A&A, 355, L27
Jeffries, R. D., Bertram, D., & Spurgeon, B. R. 1995, MNRAS, 276, 397
López Santiago, J., Montes, D., Fernández Figueroa, M. J., & Ramsey, L. W. 2003, A&A, 411, 489
Montes, D., De Castro, E., Fernández Figueroa, M. J., & Cornide, M. 1995, A&AS, 114, 287
Montes, D., Fernández Figueroa, M. J., De Castro, E., Cornide, M., Latorre, A., & Sanz Forcada, J. 2000, A&AS, 146, 103 (Paper III)
Montes, D., Fernández Figueroa, M. J., De Castro, E., & Sanz Forcada, J. 1997, A&AS, 125, 263 (Paper I)
Montes, D., López Santiago, J., Fernández Figueroa, M. J., & Gálvez, M. C. 2001a, A&A, 379, 976
Montes, D., López Santiago, J., Gálvez, M. C., Fernández Figueroa, M. J., De Castro, E., & Cornide, M. 2001b, MNRAS, 328, 45
Montes, D., Sanz Forcada, J., Fernández Figueroa, M. J., De Castro, E., & Poncet, A. 1998, A&A, 330, 155 (Paper II)
Pandey, J. C., Singh, K. P., Drake, S. A., & Sagar, R. 2005, AJ, 130, 1231
Pandey, J. C., Singh, K. P., Sagar, R., & Drake, S. A. 2002,J. Astrophys. Astron., 23, 9
Popper, D. M. 1996, ApJSS, 106, 133
Press, W. H., Flannery, B. P., & Teukolsky, S. A. 1986, Numerical Recipes. The Art of Scientific Computing (Cambridge: Cambridge Univ. Press)
Robb, R. M., & Gladders, M. D. 1996, IAU, 4412
Schmidt-Kaler, T. 1982, in Landolt–Börnstein,Vol. 2b, ed. K. Schaifers & H. H. Voig (Heidelberg: Springer)
Strassmeier, K. G., Washuettl, A., Granzer, Th., Scheck, M., & Weber, M. 2000, A&AS, 142, 275
Tonry, J., & Davis, M. 1979, AJ, 84, 1511