SN 2005cs in M51 II. Complete Evolution in the Optical and the Near-Infrared
| Autor: | Pastorello, A., Valenti, S., Zampieri, L., Navasardyan, H., Taubenberger, S., Smartt, S. J., Arkharov, A. A., Baernbantner, O., Barwig, H., Benetti, S., Birtwhistle, P., Botticella, M. T., Cappellaro, E., Del Principe, M., Di Mille, F., Di Rico, G., Dolci, M., Elias-Rosa, N., Efimova, N. V., Fiedler, M., Harutyunyan, A., Hoeflich, P. A., Kloehr, W., Larionov, V. M., Lorenzi, V., Maund, J. R., Napoleone, N., Ragni, M., Richmond, M., Ries, C., Spiro, S., Temporin, S., Turatto, M., Wheeler, J. C. |
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| Rok vydání: | 2009 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1111/j.1365-2966.2009.14505.x |
| Popis: | We present the results of the one year long observational campaign of the type II-plateau SN 2005cs, which exploded in the nearby spiral galaxy M51 (the Whirlpool Galaxy). This extensive dataset makes SN 2005cs the best observed low-luminosity, 56Ni-poor type II-plateau event so far and one of the best core-collapse supernovae ever. The optical and near-infrared spectra show narrow P-Cygni lines characteristic of this SN family, which are indicative of a very low expansion velocity (about 1000 km/s) of the ejected material. The optical light curves cover both the plateau phase and the late-time radioactive tail, until about 380 days after core-collapse. Numerous unfiltered observations obtained by amateur astronomers give us the rare opportunity to monitor the fast rise to maximum light, lasting about 2 days. In addition to optical observations, we also present near-infrared light curves that (together with already published UV observations) allow us to construct for the first time a reliable bolometric light curve for an object of this class. Finally, comparing the observed data with those derived from a semi-analytic model, we infer for SN 2005cs a 56Ni mass of about 0.003 solar masses, a total ejected mass of 8-13 solar masses and an explosion energy of about 3 x 10^50 erg. Comment: 18 pages, 18 figures, accepted for publication in MNRAS |
| Databáze: | arXiv |
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