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Theoretical light curves of Type II-P supernovae and applications to cosmology |
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| Authors: | A Chieffi I Domínguez P Höflich M Limongi O Straniero |
| Institution: | Istituto di Astrofisica Spaziale e Fisica Cosmica (CNR), Via Fosso del Cavaliere, I-00133 Rome, Italy;Departmento de Física Teórica y del Cosmos, Universidad de Granada, E-18071 Granada, Spain;Department of Astronomy, University of Texas, Austin, TX 78681, USA;INAF-Osservatorio Astronomico di Roma, Via Frascati 33, I-00040 Monteporzio Catone, Italy;INAF-Osservatorio Astronomico di Teramo, I-64100 Teramo, Italy |
| Abstract: | Based on an extensive grid of stellar models between 13 and 25 M With decreasing metallicity, Z , and increasing mass, progenitors tend to explode as compact blue supergiants (BSG) and produce subluminous supernovae that are approximately 1.5 mag dimmer than normal Type II supernovae (SNe II) with red supergiant (RSG) progenitors. Progenitors with small masses tend to explode as RSGs even at low Z . The consequence for testing the chemical evolution is obvious, namely a strong bias when using the statistics of core collapse supernovae to determine the history of star formation. Our study is limited in scope with respect to the explosion energies and the production of radioactive Ni. Within the class of extreme SNe II-P supernovae, the light curves are rather insensitive with respect to the progenitor mass and explosion energy compared with analytic models based on parametrized stellar structures. We expect a wider range of brightness due to variations in |
| Keywords: | stars: evolution stars: interiors supernovae: general distance scale |