The delay of shock breakout due to circumstellar material evident in most type II supernovae

F. Förster, T. J. Moriya, J. C. Maureira, J. P. Anderson, S. Blinnikov, F. Bufano, G. Cabrera-Vives, A. Clocchiatti, T. Jaeger, P. A. Estévez, L. Galbany, S. González-Gaitán, G. Gräfener, M. Hamuy, E. Y. Hsiao, P. Huentelemu, P. Huijse, H. Kuncarayakti, J. Martínez, G. MedinaF. Olivares E., G. Pignata, A. Razza, I. Reyes, J. San Martín, R. C. Smith, E. Vera, A. K. Vivas, A. de Ugarte Postigo, S. C. Yoon, C. Ashall, M. Fraser, A. Gal-Yam, E. Kankare, L. Le Guillou, P. A. Mazzali, N. A. Walton, D. R. Young

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

41 Citas (Scopus)

Resumen

Type II supernovae (SNe II) originate from the explosion of hydrogen-rich supergiant massive stars. Their first electromagnetic signature is the shock breakout (SBO), a short-lived phenomenon that can last for hours to days depending on the density at shock emergence. We present 26 rising optical light curves of SN II candidates discovered shortly after explosion by the High Cadence Transient Survey and derive physical parameters based on hydrodynamical models using a Bayesian approach. We observe a steep rise of a few days in 24 out of 26 SN II candidates, indicating the systematic detection of SBOs in a dense circumstellar matter consistent with a mass loss rate of Ṁ> 10−4M yr−1 or a dense atmosphere. This implies that the characteristic hour-timescale signature of stellar envelope SBOs may be rare in nature and could be delayed into longer-lived circumstellar material SBOs in most SNe II.

Idioma originalInglés
Páginas (desde-hasta)808-818
Número de páginas11
PublicaciónNature Astronomy
Volumen2
N.º10
DOI
EstadoPublicada - 1 oct 2018

Áreas temáticas de ASJC Scopus

  • Astronomía y astrofísica

Huella

Profundice en los temas de investigación de 'The delay of shock breakout due to circumstellar material evident in most type II supernovae'. En conjunto forman una huella única.

Citar esto