SN 2005cs in M51 II. Complete Evolution in the Optical and the Near-Infrared - Astrophysics > Astrophysics of GalaxiesReportar como inadecuado




SN 2005cs in M51 II. Complete Evolution in the Optical and the Near-Infrared - Astrophysics > Astrophysics of Galaxies - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: We present the results of the one year long observational campaign of thetype II-plateau SN 2005cs, which exploded in the nearby spiral galaxy M51 theWhirlpool Galaxy.
This extensive dataset makes SN 2005cs the best observedlow-luminosity, 56Ni-poor type II-plateau event so far and one of the bestcore-collapse supernovae ever.
The optical and near-infrared spectra shownarrow P-Cygni lines characteristic of this SN family, which are indicative ofa very low expansion velocity about 1000 km-s of the ejected material.
Theoptical light curves cover both the plateau phase and the late-time radioactivetail, until about 380 days after core-collapse.
Numerous unfilteredobservations obtained by amateur astronomers give us the rare opportunity tomonitor the fast rise to maximum light, lasting about 2 days.
In addition tooptical observations, we also present near-infrared light curves that togetherwith already published UV observations allow us to construct for the firsttime a reliable bolometric light curve for an object of this class.
Finally,comparing the observed data with those derived from a semi-analytic model, weinfer for SN 2005cs a 56Ni mass of about 0.003 solar masses, a total ejectedmass of 8-13 solar masses and an explosion energy of about 3 x 10^50 erg.



Autor: A.
Pastorello, S.
Valenti, L.
Zampieri, H.
Navasardyan, S.
Taubenberger, S.
J.
Smartt, A.
A.
Arkharov, O.
Baernbantner, H.
Barwig


Fuente: https://arxiv.org/



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