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On the necessity of composition-dependent low-temperature opacity in models of metal-poor Asymptotic Giant Branch stars

Autor
Constantino, T.; Campbell, S.; Gil Pons, P.; Lattanzio, J. C.
Tipus d'activitat
Article en revista
Revista
Astrophysical journal
Data de publicació
2014
DOI
https://doi.org/10.1088/0004-637X/784/1/56 Obrir en finestra nova
URL
http://iopscience.iop.org/0004-637X/784/1/56/ Obrir en finestra nova
Resum
The vital importance of composition-dependent low-temperature opacity in low-mass (M <= 3 M ¿) asymptotic giant branch (AGB) stellar models of metallicity Z >= 0.001 has recently been demonstrated. Its significance to more metal-poor, intermediate-mass (M >= 2.5 M ¿) models has yet to be investigated. We show that its inclusion in lower-metallicity models ([Fe/H] <=-2) is essential and that there exists no threshold metallicity below which composition-dependent molecular opacity may be neglect...
Grup de recerca
DF - Dinàmica de Fluids: formació d'estructures i aplicacions geofísiques

Participants

  • Constantino, Thomas  (autor)
  • Campbell, Simon W  (autor)
  • Gil Pons, Pilar  (autor)
  • Lattanzio, John C.  (autor)