Stellar activity in barium stars .1. Analysis of H-lines and K-lines CA-II-lines in 10 barium stars
| dc.contributor.author | Cornide Castro-Piñeiro, Manuel | |
| dc.contributor.author | Fernández Figueroa, María José | |
| dc.contributor.author | Castro Rubio, Elisa De | |
| dc.contributor.author | Armentia, J. A. | |
| dc.contributor.author | Reglero, V. | |
| dc.date.accessioned | 2023-06-20T20:08:40Z | |
| dc.date.available | 2023-06-20T20:08:40Z | |
| dc.date.issued | 1992-04 | |
| dc.description | © 1992. American Astronomical Society. The 2.2 m telescope at Calar Alto Observatory is operated by the Max-Planck Institut für Astronomie at the Centro Astronómico Hispano-Alemán. We want to express our gratitude to the staff of the Observatory for their help during the observational campaign. This work has been supported by the Spanish Comisión Interministerial de Ciencia y Tecnología. | |
| dc.description.abstract | High dispersion spectra have been obtained in order to study the activity level of ten barium stars by means of the Ca II H and K emission flux, looking for a relation between barium intensity index and activity. Absolute magnitudes obtained from the Wilson-Bappu relationship disagree, in some cases, with the magnitudes computed from parallaxes, but this fact is not due to barium nature. Total emission fluxes, F(H + K) or R_HK index, plotted versus effective temperature show a distribution similar to that of cool giant stars. The asymmetry of K emission line, [F(K_2ν)/F(K_2r)], has been analyzed in relation with effective temperature, in this sense barium stars behave as expected of late-type giants with the only exception of two stars. | |
| dc.description.department | Depto. de Física de la Tierra y Astrofísica | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | Comisión Interministerial de Ciencia y Tecnología (CICYT), España | |
| dc.description.sponsorship | Ministerio de Ciencia e Innovación (MICINN), España | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/31365 | |
| dc.identifier.doi | 10.1086/116151 | |
| dc.identifier.issn | 0004-6256 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1086/116151 | |
| dc.identifier.relatedurl | http://adsabs.harvard.edu/ | |
| dc.identifier.relatedurl | http://www.aanda.org | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/59665 | |
| dc.issue.number | 4 | |
| dc.journal.title | Astronomical journal | |
| dc.language.iso | eng | |
| dc.page.final | 1380 | |
| dc.page.initial | 1374 | |
| dc.publisher | IOP Publishing ltd | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 52 | |
| dc.subject.keyword | Mass-loss | |
| dc.subject.keyword | Emission | |
| dc.subject.ucm | Astrofísica | |
| dc.subject.ucm | Astronomía (Física) | |
| dc.title | Stellar activity in barium stars .1. Analysis of H-lines and K-lines CA-II-lines in 10 barium stars | |
| dc.type | journal article | |
| dc.volume.number | 103 | |
| dcterms.references | Avrett, E. H. 1990, in Solar Photosphere : Structure, Convection and Magnetic Fields, IAU Symposium No. 138 (Kluwer, Dordrecht), p. 3 Barnes, T. G., & Evans, D. S. 1976, MNRAS, 489 Barnes, J. V., & Hayes, D. S. 1984, IRS Standard Manual Bidelman W. P., & Keenan, P. C. 1951, ApJ, 114, 473 Blanco, C., Catalano, S., Marilli, E., & Rodonò, M. 1974, A&A, 33, 257 Böhm-Vitense, E. 1981, ARA&A, 19, 295 Chiu, H. Y., Adams, P. J., Linsky , J. L., Basry, G. S., Maran, S. P., & Hobbs, R. W. 1977, ApJ, 211, 453 Fabregat, J. 1989, Ph. D. thesis, Universidad de Valencia, Spain Fekel, F. C., Moffet, T. J., & Henry, G. W. 1986, ApJ, 60, 551 Fernández Figueroa, M. J., Montesinos, B., Castro, E. de, Rego, M., Giménez, A., & Reglero, V. 1986, A&A, 169, 219 Fernández Villacañas, J. L., Rego, M., & Comide, M. 1990, AJ, 99, 1967 Hayes, D. S., & Latham, D. W. 1975, ApJ, 197, 593 Hoftleit, D., & Jaschek, C. 1982, Catalogue of Bright Stars (Yale University, New Haven) Jaschek C., Jaschek M., Grenier S., & Heck A. 1985, Cool Stars with Excess of Heavy Elements (Reidel, Dordrecht), p. 185 Johnson, H. L. 1966, ARA&A, 4, 193 Keenan , P. C., & Yorka, S. B. 1985, C.D.S. Bull. 29 Kemper E. 1975, PASP, 87, 537 Landolt-Börnstein 1982, Astronomy and Astrophysics (Springer, New York), Vol. 2 Linsky, J. L., & Ayres, T. R. 1978, ApJ, 220, 619 Linsky, J. L., Worden, S. P., McClintock, W., & Robertson, R. M. 1979, ApJ, 41, 47 Lutz, T. E. 1970, AJ, 75, 1007 McClure, R. D., & Woodsworth, A. W. 1990, ApJ, 352, 709 Morgan W. W., & Keenan, P. C. 1973, ARA&A, 11, 29 Mullan, D. 1978, ApJ, 226, 151 Oke, J. B., & Gunn, J. E. 1983, ApJ, 266, 713 Pasquini, L., Brocato, E., & Pallavicini, R. 1990, A&A, 234, 277 Reglero, V., Cornide, M., Clement, R., Fernández Figueroa, M. J., & Fabregat, J. 1991, in Evolutionary Processes in Interacting Binaries, IAU Symposium No. 151 (in press) Stencel, R. E. 1978, ApJ, 223, L37 Strassmeier, K. G., Fekel, F. C., Bopp, B. W., Dempsey, R. C., & Henry, G. W. 1990, ApJ, 72, 191 Vaughan, A. H., & Preston , G. W. 1980, PASP, 92, 385 Yamashita, Y., & Norimoto, Y. 1981, Ann. Tokyo Astron. Obs., 18, 125 Warner, B. 1965, MNRAS, 129, 263 Wilson, O. C., & Bappu, M. K. V. 1957, ApJ, 125, 661 | |
| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | 7fb65e4f-6cd8-40f1-88c3-23f46fc271af | |
| relation.isAuthorOfPublication | 69d74cdf-f618-484d-b812-aabbd99a993c | |
| relation.isAuthorOfPublication | fac67a6c-a5c6-44e9-a74d-a086abd5aa5f | |
| relation.isAuthorOfPublication.latestForDiscovery | 7fb65e4f-6cd8-40f1-88c3-23f46fc271af |
Download
Original bundle
1 - 1 of 1
