Metallicity effects on the modified wind momentum of cspn
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional Autónoma de México
2008
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| _version_ | 1876486541348438016 |
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| author | G. R. Keller |
| author_facet | G. R. Keller |
| contents | Metallicity effects on the modified wind momentum of cspn G. R. Keller W. J. Maciel R. D. D. Costa Física, Astronomía y Matemáticas out ows stars: winds stars: mass loss planetary nebulae: general Recent investigations on the central stars of planetary nebulae (CSPN) indicatethat the masses based on model atmospheres can be much larger than themasses derived from theoretical mass-luminosity relations. Also, the dispersion inthe relation between the modified wind momentum and the luminosity depends onthe mass spread of the CSPN, and is larger than observed in massive hot stars.Since the wind characteristics probably depend on the metallicity, we analyze theeffects on the modified wind momentum by considering the dispersion in this quantitycaused by the stellar metallicity. Our CSPN masses are based on a relationbetween the core mass and the nebular abundances. We conclude that these massesagree with the known mass distribution both for CSPN and white dwarfs, and thatthe spread in the modified wind momentum can be explained by the observedmetallicity variations. 2008 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57144116 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_57144116 |
| institution | Redalyc |
| language | en |
| publishDate | 2008 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Metallicity effects on the modified wind momentum of cspn G. R. Keller Física, Astronomía y Matemáticas out ows stars: winds stars: mass loss planetary nebulae: general Metallicity effects on the modified wind momentum of cspn G. R. Keller W. J. Maciel R. D. D. Costa Física, Astronomía y Matemáticas out ows stars: winds stars: mass loss planetary nebulae: general Recent investigations on the central stars of planetary nebulae (CSPN) indicatethat the masses based on model atmospheres can be much larger than themasses derived from theoretical mass-luminosity relations. Also, the dispersion inthe relation between the modified wind momentum and the luminosity depends onthe mass spread of the CSPN, and is larger than observed in massive hot stars.Since the wind characteristics probably depend on the metallicity, we analyze theeffects on the modified wind momentum by considering the dispersion in this quantitycaused by the stellar metallicity. Our CSPN masses are based on a relationbetween the core mass and the nebular abundances. We conclude that these massesagree with the known mass distribution both for CSPN and white dwarfs, and thatthe spread in the modified wind momentum can be explained by the observedmetallicity variations. 2008 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57144116 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 | Metallicity effects on the modified wind momentum of cspn |
| topic | Física, Astronomía y Matemáticas out ows stars: winds stars: mass loss planetary nebulae: general |
| url | https://www.redalyc.org/articulo.oa?id=57144116 |