New insights into the nature of the smc wr/lbv binary hd 5980
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Nacional Autónoma de México
2008
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| author | C. Foellmi |
| author_facet | C. Foellmi |
| contents | New insights into the nature of the smc wr/lbv binary hd 5980 C. Foellmi S. V. Marchenko P. Massey T. H. Dall N. Morrell M. Corcoran Y. Nazé J. Pittard A. Fullerton G. Koenigsberger O. Toledano L. Georgiev A. F. J. Moffat A. Kaufer N. St. Louis D. Massa M. T. Pollock Física, Astronomía y Matemáticas binaries: close stars: mass loss stars: individual (HD 5980) We present the results of optical wavelength observations of the unusual SMCeclipsing binary system HD 5980 obtained in 1999 and 20042005. Radial velocitycurves for the erupting LBV/WR object (star A) and its close WR-like companion(star B) are obtained by deblending the variable emission-line profiles of NIV andNV lines. The derived masses MA = 58 − 79M. and MB = 51 − 67M. , aremore consistent with the the stars location near the top of the HRD than previousestimates. The presence of a wind-wind interaction region is inferred from theorbital phase-dependent behavior of He I P Cygni absorption components. Theemission-line intensities continued with the declining trend previously seen in UVspectra. The behavior of the photospheric absorption lines is consistent with theresults of Schweickhardt (2000) who concludes that the third object in the combinedspectrum, star C, is also a binary system with PstarC ∼96.5 days, e=0.83. 2008 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57144101 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.1 Vol.44 |
| format | Artículo científico |
| id | redalyc_57144101 |
| institution | Redalyc |
| language | en |
| publishDate | 2008 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | New insights into the nature of the smc wr/lbv binary hd 5980 C. Foellmi Física, Astronomía y Matemáticas binaries: close stars: mass loss stars: individual (HD 5980) New insights into the nature of the smc wr/lbv binary hd 5980 C. Foellmi S. V. Marchenko P. Massey T. H. Dall N. Morrell M. Corcoran Y. Nazé J. Pittard A. Fullerton G. Koenigsberger O. Toledano L. Georgiev A. F. J. Moffat A. Kaufer N. St. Louis D. Massa M. T. Pollock Física, Astronomía y Matemáticas binaries: close stars: mass loss stars: individual (HD 5980) We present the results of optical wavelength observations of the unusual SMCeclipsing binary system HD 5980 obtained in 1999 and 20042005. Radial velocitycurves for the erupting LBV/WR object (star A) and its close WR-like companion(star B) are obtained by deblending the variable emission-line profiles of NIV andNV lines. The derived masses MA = 58 − 79M. and MB = 51 − 67M. , aremore consistent with the the stars location near the top of the HRD than previousestimates. The presence of a wind-wind interaction region is inferred from theorbital phase-dependent behavior of He I P Cygni absorption components. Theemission-line intensities continued with the declining trend previously seen in UVspectra. The behavior of the photospheric absorption lines is consistent with theresults of Schweickhardt (2000) who concludes that the third object in the combinedspectrum, star C, is also a binary system with PstarC ∼96.5 days, e=0.83. 2008 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57144101 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.1 Vol.44 |
| title | New insights into the nature of the smc wr/lbv binary hd 5980 |
| topic | Física, Astronomía y Matemáticas binaries: close stars: mass loss stars: individual (HD 5980) |
| url | https://www.redalyc.org/articulo.oa?id=57144101 |