|
Título:
|
On the photometric homogeneity of type IA supernovae
|
|
Autor/a:
|
Bravo Guil, Eduardo; Domínguez, Inmaculada; Isern Vilaboy, Jordi; Canal Corretger, Ramon; Höflich, P.; Labay, Javier
|
|
Otros autores:
|
Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear; Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica; Universitat Politècnica de Catalunya. ARCO - Microarquitectura i Compiladors |
|
Abstract:
|
The dependence of the characteristics of the light curves of Type Ia supernovae on the ignition density of the progenitor white dwarf is studied with the aid of two models of propagation of the thermonuclear burning front: as a deflagration and as a delayed detonation. The light curve is computed from opacities which take into account the velocity gradients. The results show that in all cases the resulting light curves roughly agree with observations and that they are not sensitive to the ignition density of the white dwarf. Only the model corresponding to a deflagration starting at a density of 8 x 10 exp 9 g/cu cm shows a deviation from the general behavior, having a significantly lower luminosity at maximum. A dispersion of about 1000 km/s is found in the computed expansion velocities at maximum, which compares well with that found in the observations. |
|
Abstract:
|
Peer Reviewed |
|
Materia(s):
|
-Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
-Supernovae
-Supernoves |
|
Derechos:
|
|
|
Tipo de documento:
|
Artículo - Versión publicada
Artículo |
|
Compartir:
|
|
