Saturday, November 22, 2014

 

 



Soy un nuevo usuario

Olvidé mi contraseña

Entrada usuarios

Lógica Matemáticas Astronomía y Astrofísica Física Química Ciencias de la Vida
Ciencias de la Tierra y Espacio Ciencias Agrarias Ciencias Médicas Ciencias Tecnológicas Antropología Demografía
Ciencias Económicas Geografía Historia Ciencias Jurídicas y Derecho Lingüística Pedagogía
Ciencia Política Psicología Artes y Letras Sociología Ética Filosofía


The upper mass limit for the formation of TP-SAGB stars and the dredge-out phenomenon

1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario
    registrado en Universia


  Descargar recurso

Detalles del recurso

Pertenece a: RECERCAT  

Descripción: We have computed the evolution of Super-AGB stars from the main sequenceand up to a few hundred thermal pulses, with special attention to the low metallicity cases(Z = 10 10; 10 5; 10 4 and 10 3). Our computations have been performed using time–dependent mixing and new opacity tables that admit variations in the abundances of carbonand oxygen. By following the evolution along the main central burning stages and theearly TP-SAGB, we resolve the upper mass limits for the formation of TP-SAGB stars anddetermine the mass range at which the dredge-out phenomenon occurs. This phenomenoninvolves the merger of a convective shell sustained by helium burning at the top of thedegenerate core with the hydrogen–rich convective envelope and the occurrence of a hydrogenflash. The dredge–out allows elements synthesised through helium burning to betransported to the stellar surfaces and therefore it can a ect the initial composition of theTP-SAGB stars.

Autor(es): Gil Pons, Pilar -  Doherty, Carolyn L. - 

Id.: 55271627

Idioma: English  - 

Versión: 1.0

Estado: Final

Palabras claveÀrees temàtiques de la UPC -  Física -  Astronomia i astrofísica - 

Tipo de recurso: Article  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: Open Access

Requerimientos técnicos:  Browser: Any - 

Fecha de contribución: 06-may-2012

Contacto:

Localización:


Otros recursos del mismo autor(es)

  1. Evolution and CNO yields of Z = 10-5 stars and possible effects on carbon-enhanced metal-poor production Aims. Our main goals are to get a deeper insight into the evolution and final fates of intermediate-...
  2. Evolution and CNO yields of Z = 10-5 stars and possible effects on carbon-enhanced metal-poor production Aims. Our main goals are to get a deeper insight into the evolution and final fates of intermediate-...
  3. Transition of the stellar initial mass function explored using binary population synthesis The stellar initial mass function (IMF) plays a crucial role in determining the number of surviving ...
  4. Transition of the stellar initial mass function explored using binary population synthesis The stellar initial mass function (IMF) plays a crucial role in determining the number of surviving ...
  5. The evolution and C, N and O yields of intermediate-mass Z = 10-5 stars in isolation and in close binary systems We have computed the evolution of Z = 10−5 stars of masses between 4 and 9 M , from their main seque...

Otros recursos de la misma colección

  1. The automorphism group of the non-split Cartan modular curve of level 11 We derive equations for the modular curve X-ns(11) associated to a non-split Cartan subgroup of GL(2...
  2. A secure communication system based on a modified chaotic chua oscillator In this paper we propose a new scheme for secure communications us- ing a modified Chua oscillator. ...
  3. Fracture toughness of zirconia from a shallow notch produced by ultra-short pulsed laser ablation Ceria partially stabilized zirconia ceramics (Ce-TZP) with identical grain size and different amount...
  4. Anhydric maleic functionalization and polyethylene glycol grafting of lactide-co-trimethylene carbonate copolymers Lactide and trimethylene carbonate copolymers were successfully grafted with polyethylene glycol via...
  5. Effect of structure, topography and chemistry on fibroblast adhesion and morphology Surface biofunctionalisation of many biodegradable polymers is one of the used strategies to improve...

Valoración de los usuarios

No hay ninguna valoración para este recurso.Sea el primero en valorar este recurso.
 

Busque un recurso