Very Large Array Observations of Winds from Massive Stars
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional Autónoma de México
2004
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| _version_ | 1876470280114667520 |
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| author | G. Montes |
| author_facet | G. Montes |
| contents | Very Large Array Observations of Winds from Massive Stars G. Montes M. E. Contreras F. P. Wilkin Física, Astronomía y Matemáticas 12) TYPE RAYET P CYGNI STARS: WOLF The classical model for free-free emission from ionized stellar winds is basedon the assumption of a stationary, isotropic and homogeneous wind. However, sincethere exist objects whose wind behavior deviates from the standard model, theseassumptions have been questioned in the last decade. In this work, we presentresults for 3 bright sources: P Cyg (B1Ia, LBV), Cyg OB2 No. 12 (B5Ie, LBV?)and WR 147 (WN8h+B0.5V). These hot massive objects have been reported topossess winds that deviate from the basic assumptions. We have obtained radio fluxdensities, sizes, spectral indices and mass loss rates for each of the targets. Theseparameters allow us to analyze possible asymmetries, inhomogeneities and timevariations in the flux densities. These features confirm the nonclassical behaviourof the winds of these hot massive stars. 2004 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57140106 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.40 |
| format | Artículo científico |
| id | redalyc_57140106 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Very Large Array Observations of Winds from Massive Stars G. Montes Física, Astronomía y Matemáticas 12) TYPE RAYET P CYGNI STARS: WOLF Very Large Array Observations of Winds from Massive Stars G. Montes M. E. Contreras F. P. Wilkin Física, Astronomía y Matemáticas 12) TYPE RAYET P CYGNI STARS: WOLF The classical model for free-free emission from ionized stellar winds is basedon the assumption of a stationary, isotropic and homogeneous wind. However, sincethere exist objects whose wind behavior deviates from the standard model, theseassumptions have been questioned in the last decade. In this work, we presentresults for 3 bright sources: P Cyg (B1Ia, LBV), Cyg OB2 No. 12 (B5Ie, LBV?)and WR 147 (WN8h+B0.5V). These hot massive objects have been reported topossess winds that deviate from the basic assumptions. We have obtained radio fluxdensities, sizes, spectral indices and mass loss rates for each of the targets. Theseparameters allow us to analyze possible asymmetries, inhomogeneities and timevariations in the flux densities. These features confirm the nonclassical behaviourof the winds of these hot massive stars. 2004 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57140106 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.40 |
| title | Very Large Array Observations of Winds from Massive Stars |
| topic | Física, Astronomía y Matemáticas 12) TYPE RAYET P CYGNI STARS: WOLF |
| url | https://www.redalyc.org/articulo.oa?id=57140106 |