Estudio de la relación rotación estelar-litio en el cúmulo σ Ori
ilustraciones, fotografías a color, gráficas, tablas
- Autores:
-
García Villota, Alexandra
- Tipo de recurso:
- Fecha de publicación:
- 2020
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/80611
- Palabra clave:
- 520 - Astronomía y ciencias afines
Astronomy
Stellar Associations
Constellations
Astronomía
Asociaciones de estrellas
Constelaciones
Relación rotación estelar-litio
Litio en las estrellas jóvenes
Rotación estelar
Cúmulo σ Ori
Formación estelar
Lithium-stellar rotation connection
Lithium in young stars
Stellar rotation
σ Ori cluster
Star formation
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
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oai:repositorio.unal.edu.co:unal/80611 |
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UNACIONAL2 |
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Universidad Nacional de Colombia |
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|
| dc.title.spa.fl_str_mv |
Estudio de la relación rotación estelar-litio en el cúmulo σ Ori |
| dc.title.translated.eng.fl_str_mv |
A study of the lithium-stellar rotation connection in the σ Ori cluster |
| title |
Estudio de la relación rotación estelar-litio en el cúmulo σ Ori |
| spellingShingle |
Estudio de la relación rotación estelar-litio en el cúmulo σ Ori 520 - Astronomía y ciencias afines Astronomy Stellar Associations Constellations Astronomía Asociaciones de estrellas Constelaciones Relación rotación estelar-litio Litio en las estrellas jóvenes Rotación estelar Cúmulo σ Ori Formación estelar Lithium-stellar rotation connection Lithium in young stars Stellar rotation σ Ori cluster Star formation |
| title_short |
Estudio de la relación rotación estelar-litio en el cúmulo σ Ori |
| title_full |
Estudio de la relación rotación estelar-litio en el cúmulo σ Ori |
| title_fullStr |
Estudio de la relación rotación estelar-litio en el cúmulo σ Ori |
| title_full_unstemmed |
Estudio de la relación rotación estelar-litio en el cúmulo σ Ori |
| title_sort |
Estudio de la relación rotación estelar-litio en el cúmulo σ Ori |
| dc.creator.fl_str_mv |
García Villota, Alexandra |
| dc.contributor.advisor.spa.fl_str_mv |
Pinzón Estrada, Giovanni |
| dc.contributor.author.spa.fl_str_mv |
García Villota, Alexandra |
| dc.subject.ddc.spa.fl_str_mv |
520 - Astronomía y ciencias afines |
| topic |
520 - Astronomía y ciencias afines Astronomy Stellar Associations Constellations Astronomía Asociaciones de estrellas Constelaciones Relación rotación estelar-litio Litio en las estrellas jóvenes Rotación estelar Cúmulo σ Ori Formación estelar Lithium-stellar rotation connection Lithium in young stars Stellar rotation σ Ori cluster Star formation |
| dc.subject.lemb.eng.fl_str_mv |
Astronomy Stellar Associations Constellations |
| dc.subject.lemb.spa.fl_str_mv |
Astronomía Asociaciones de estrellas Constelaciones |
| dc.subject.proposal.spa.fl_str_mv |
Relación rotación estelar-litio Litio en las estrellas jóvenes Rotación estelar Cúmulo σ Ori Formación estelar |
| dc.subject.proposal.eng.fl_str_mv |
Lithium-stellar rotation connection Lithium in young stars Stellar rotation σ Ori cluster Star formation |
| description |
ilustraciones, fotografías a color, gráficas, tablas |
| publishDate |
2020 |
| dc.date.issued.none.fl_str_mv |
2020 |
| dc.date.accessioned.none.fl_str_mv |
2021-10-25T20:17:43Z |
| dc.date.available.none.fl_str_mv |
2021-10-25T20:17:43Z |
| dc.type.spa.fl_str_mv |
Trabajo de grado - Maestría |
| dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/masterThesis |
| dc.type.version.spa.fl_str_mv |
info:eu-repo/semantics/acceptedVersion |
| dc.type.content.spa.fl_str_mv |
Text |
| dc.type.redcol.spa.fl_str_mv |
http://purl.org/redcol/resource_type/TM |
| status_str |
acceptedVersion |
| dc.identifier.uri.none.fl_str_mv |
https://repositorio.unal.edu.co/handle/unal/80611 |
| dc.identifier.instname.spa.fl_str_mv |
Universidad Nacional de Colombia |
| dc.identifier.reponame.spa.fl_str_mv |
Repositorio Institucional Universidad Nacional de Colombia |
| dc.identifier.repourl.spa.fl_str_mv |
https://repositorio.unal.edu.co/ |
| url |
https://repositorio.unal.edu.co/handle/unal/80611 https://repositorio.unal.edu.co/ |
| identifier_str_mv |
Universidad Nacional de Colombia Repositorio Institucional Universidad Nacional de Colombia |
| dc.language.iso.spa.fl_str_mv |
spa |
| language |
spa |
| dc.relation.references.spa.fl_str_mv |
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C.: Membership, lithium, and metallicity in the young open clusters <ASTROBJ>IC 2602</ASTROBJ> and <ASTROBJ>IC 2391</ASTROBJ>: Enlarging the sample. 372 (2001), Juni, S. 862{878 Rowse, D. P. ; Roxburgh, I. W.: Modelling Coronal Magnetic Fields. 74 (1981), November, Nr. 1, S. 165{168 Reiners, A. ; Schmitt, J. H. M. M.: On the feasibility of the detection of di erential rotation in stellar absorption pro les. 384 (2002), Maerz, S. 155{162 Schou, J. ; Antia, H. M. ; Basu, S. ; Bogart, R. S. ; Bush, R. I. ; Chitre, S. M. ; Christensen-Dalsgaard, J. ; Di Mauro, M. P. ; Dziembowski, W. A. ; E -Darwich, A. ; Gough, D. O. ; Haber, D. A. ; Hoeksema, J. T. ; Howe, R. ; Korzennik, S. G. ; Kosovichev, A. G. ; Larsen, R. M. ; Pijpers, F. P. ; Scherrer, P. H. ; Sekii, T. ; Tarbell, T. D. ; Title, A. M. ; Thompson, M. 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Atribución-NoComercial 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Pinzón Estrada, Giovanni6ce52e5e8a917dc2f987706f0207ef3f600García Villota, Alexandra9e12f68e62659179db521f558d424aba2021-10-25T20:17:43Z2021-10-25T20:17:43Z2020https://repositorio.unal.edu.co/handle/unal/80611Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/ilustraciones, fotografías a color, gráficas, tablasEl fenómeno de la dispersión del litio fotosférico en las estrellas jóvenes de temperaturas super ciales Teff < 5500 K ha sido ampliamente estudiado, sin embargo no se ha establecido una explicación de nitiva. Estudios de los años 90 del cúmulo de las Pléyades con una edad de ~125 Ma informan de una conexión entre la dispersión observada y la rotación. Asimismo, trabajos más recientes la registran en cúmulos y asociaciones más jóvenes como NGC 2264, β Pic, IC 2602 y α Per. En consecuencia, la rotación estelar se ha convertido en un elemento clave para entender este fenómeno. Esta tesis explora la relación entre el contenido de litio y la rotación estelar durante estados evolutivos muy tempranos en la vida de las estrellas, empleando 167 observaciones espectroscópicas Hectochelle de alta resolución (R ~ 34000) en la región del cúmulo σ Ori con una edad de ~3 Ma. Utilizando la técnica de correlación cruzada de Fourier se establecen los valores de la velocidad ecuatorial proyectada (vsini) de 95 objetos, que luego se comparan en un diagrama EW(Li)-Teff con anchos equivalentes de la línea de Li I λ6708 reportados en la literatura. Gracias a la popularidad del cúmulo por su juventud, cercanía, muy bajo enrojecimiento, y un amplio rango de masas, se cuenta con gran cantidad de información sobre él en la literatura. Por esta razón se decide incluir al análisis litio-rotación, los parámetros: naturaleza binaria y estado evolutivo del disco, que también han sido considerados para explicar la dispersión en las abundancias de litio. En el rango de temperaturas super ciales entre 4100 y 4900 K (~ 0.55-0.72 Mo ) se advierte lo que parece ser una triple correlación entre el tipo de disco, la rotación y el agotamiento de litio. Este trabajo constituye al día de hoy la caracterización espectroscópica más extensa y de mayor resolución de la rotación estelar del cúmulo σ Ori. Representa igualmente el primer intento por estudiar la conexión litio-rotación a 3 Ma, que es una edad crucial en la vida de las estrellas jóvenes porque empiezan a notarse las transiciones evolutivas de los discos protoplanetarios, así como el agotamiento del litio atmosférico. (Texto tomado de la fuente).The phenomenon of photospheric lithium dispersion in young stars with surface temperatures Teff < 5500 K has been extensively studied, however a de finitive explanation has not been established. Studies from the 1990s of the Pleiades cluster with an age of ~125 Myr report a connection between the observed dispersion and rotation. Likewise, more recent works record it in younger clusters and associations such as NGC 2264, β Pic, IC 2602 and α Per. Consequently, stellar rotation has become a key element in understanding this phenomenon. This thesis explores the relationship between lithium content and stellar rotation during very early evolutionary stages in the life of stars, using 167 high-resolution (R ~ 34000) Hectochelle spectroscopic observations on the region of the σ Ori cluster with an age of ~3 Myr. Adopting the Fourier cross-correlation technique, projected rotational velocities (vsini) are determined. Then in a EW(Li)-Teff plane, vsini values are compared with Li I λ6708 equivalent widths found in the literature. Thanks to the popularity of the cluster because of its youth, proximity, very low redness, and a wide range of masses, a great deal of information about it is available in the literature. For this reason, it was decided to include the parameters: binary systems and disc evolutionary stages, into the lithium-rotation analysis. These parameters have also been considered to explain the dispersion of lithium abundances. What appears to be a triple correlation between disc type, rotation, and lithium depletion, is noted in the range of surface temperatures from 4100 to 4900 K (~ 0.55-0.72 M o). This work constitutes to date the most extensive and with highest resolution spectroscopic characterization of the σ Ori cluster stellar rotation. It also represents the fi rst attempt to study the lithium-rotation connection at 3 Myr, which is a crucial age in the life of young stars because beginnings of protoplanetary disc evolution become evident, as well as lithium depletion.Incluye anexosMaestríaMagíster en Ciencias - AstronomíaObservatorio Astronómico Nacionalx, 107 páginasapplication/pdfspaUniversidad Nacional de ColombiaBogotá - Ciencias - Maestría en Ciencias - AstronomíaObservatorio Astronómico NacionalFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá520 - Astronomía y ciencias afinesAstronomyStellar AssociationsConstellationsAstronomíaAsociaciones de estrellasConstelacionesRelación rotación estelar-litioLitio en las estrellas jóvenesRotación estelarCúmulo σ OriFormación estelarLithium-stellar rotation connectionLithium in young starsStellar rotationσ Ori clusterStar formationEstudio de la relación rotación estelar-litio en el cúmulo σ OriA study of the lithium-stellar rotation connection in the σ Ori clusterTrabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TMArancibia, J. ; Bouvier, J. ; Bayo, A. ; Galli, P. A. B. ; Brandner, W. ; Bouy, H. ; Barrado, D.: The lithium-rotation connection in the Psc-Eri stream. Boletin de la Asociacion Argentina de Astronomia La Plata Argentina 61C (2020), August, S. 81{81Abney, W. De W.: e ect of a star's rotation on its spectrum. 37 (1877), Maerz, S. 278{279Andre, Philippe ; Montmerle, Thierry: From T Tauri Stars to Protostars: Circumstellar Material and Young Stellar Objects in the rho Ophiuchi Cloud. 420 (1994), Januar, S. 837Andre, Philippe ; Montmerle, Thierry ; Feigelson, Eric D.: A VLA Survey of Radio- Emitting Young Stars in the Rho Ophiuchi Dark Cloud. 93 (1987), S. 1182A er, L. ; Micela, G. ; Favata, F. ; Flaccomio, E.: The rotation of eld stars from CoRoT data. 424 (2012), Juli, Nr. 1, S. 11{22Adams, F. C. ; Shu, F. H.: Infrared emission from protostars. 296 (1985), September, S. 655{669Adams, M. T. ; Strom, K. M. ; Strom, S. E.: The star-forming history of the young cluster NGC 2264. 53 (1983), S. 893{935Andre, Philippe ; Ward-Thompson, Derek ; Barsony, Mary: Submillimeter Continuum Observations of rho Ophiuchi A: The Candidate Protostar VLA 1623 and Prestellar Clumps. 406 (1993), Maerz, S. 122Balluch, M.: Structure and stability of steady protostellar accretion ows. I. 243 (1991), Maerz, Nr. 1, S. 168{186Basri, Gibor ; Bertout, Claude: T-Tauri Stars and Their Accretion Disks. In: Levy, Eugene H. (Hrsg.) ; Lunine, Jonathan I. (Hrsg.): Protostars and Planets III , 1993, S. 543Barrado, D. ; Bouy, H. ; Bouvier, J. ; Moraux, E. ; Sarro, L. M. ; Bertin, E. ; Cuillandre, J. C. ; Stau er, J. R. ; Lillo-Box, J. ; Pollock, A.: The seven sisters DANCe. II. Proper motions and the lithium rotation-activity connection for G and K Pleiades. 596 (2016), S. 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