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| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.creator | Mauas, Pablo Jacobo David | - |
| dc.creator | Cacciari, C. | - |
| dc.creator | Pasquini, L. | - |
| dc.date | 2017-05-18T19:57:30Z | - |
| dc.date | 2017-05-18T19:57:30Z | - |
| dc.date | 2006-08 | - |
| dc.date | 2017-05-16T15:11:46Z | - |
| dc.date.accessioned | 2019-04-29T15:50:22Z | - |
| dc.date.available | 2019-04-29T15:50:22Z | - |
| dc.date.issued | 2006-08 | - |
| dc.identifier | Mauas, Pablo Jacobo David; Cacciari, C.; Pasquini, L.; Modelling chromospheric line profiles in NGC 2808: evidence of mass loss from RGB stars; Edp Sciences; Astronomy And Astrophysics; 454; 2; 8-2006; 609-615 | - |
| dc.identifier | 0004-6361 | - |
| dc.identifier | http://hdl.handle.net/11336/16674 | - |
| dc.identifier.uri | http://rodna.bn.gov.ar:8080/jspui/handle/bnmm/303390 | - |
| dc.description | In this study we test the possibility that the asymmetry in the profiles of the Hα and Ca ii K lines in red giant stars is due to the presence of an active chromosphere rather than to mass loss. To this end, we compare line profiles computed using relevant model chromospheres to profiles of the Hα and Ca ii K lines observed in five red giant stars of the globular cluster NGC 2808. The spectra were taken with FLAMES during the science verification, using the UVES mode at high resolution ( 000) for the Hα line, and GIRAFFE in MEDUSA mode () for the Ca ii K line. We find that the observed profiles are better described if a negative (outward) velocity field is included in the model chromospheres. This leads to mass loss rates of a few 10-9 yr-1, so very close to the requirements of the stellar evolution theory. | - |
| dc.description | Fil: Mauas, Pablo Jacobo David. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina | - |
| dc.description | Fil: Cacciari, C.. Observatoire Astronomico di Bologna; Italia | - |
| dc.description | Fil: Pasquini, L.. European Southern Observatory; Alemania | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.language | eng | - |
| dc.publisher | Edp Sciences | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2006/29/aa4792-05/aa4792-05.html | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361:20054792 | - |
| dc.rights | info:eu-repo/semantics/openAccess | - |
| dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | - |
| dc.source | reponame:CONICET Digital (CONICET) | - |
| dc.source | instname:Consejo Nacional de Investigaciones Científicas y Técnicas | - |
| dc.source | instacron:CONICET | - |
| dc.subject | Astrophysics | - |
| dc.subject | Astronomía | - |
| dc.subject | Ciencias Físicas | - |
| dc.subject | CIENCIAS NATURALES Y EXACTAS | - |
| dc.title | Modelling chromospheric line profiles in NGC 2808: evidence of mass loss from RGB stars | - |
| dc.type | info:eu-repo/semantics/article | - |
| dc.type | info:eu-repo/semantics/publishedVersion | - |
| dc.type | info:ar-repo/semantics/articulo | - |
| Aparece en las colecciones: | CONICET | |
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