تقرير
The Carnegie Supernova Project II. Observations of the intermediate luminosity red transient SNhunt120
| العنوان: | The Carnegie Supernova Project II. Observations of the intermediate luminosity red transient SNhunt120 |
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| المؤلفون: | Stritzinger, M. D., Taddia, F., Fraser, M., Tauris, T. M., Suntzeff, N. B., Contreras, C., Drybye, S, Galbany, L., Holmbo, S., Morrell, N., Phillips, M. M., Prieto, J. L., Anais, J., Ashall, C., Baron, E., Burns, C. R., Hoeflich, P., Hsiao, E. Y., Karamehmetoglu, E., Moriya, T. J., Botticella, M. T., Campillay, A., Castellon, S., Gonzalez, C., Pumo, M. L., Torres-Robledo, S. |
| المصدر: | A&A 639, A103 (2020) |
| سنة النشر: | 2020 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | We present multi-wavelength observations of two gap transients followed by the Carnegie Supernova Project-II and supplemented with data obtained by a number of different programs. Here in the first of two papers, we focus on the intermediate luminosity red transient (ILRT) designated SNhunt120, while in a companion paper we examine the luminous red novae AT 2014ej. Our data set for SNhunt120 consists of an early optical discovery, estimated to be within 3 days after outburst, the subsequent optical and near-infrared broadband followup extending over a $\sim$2 month period, two visual- and two near-infrared wavelength spectra, and Spitzer Space Telescope observations extending from early ($+$28 d) to late ($+$1155 d) phases. SNhunt120 resembles other ILRTs such as NGC 300-2008-OT and SN 2008S, and like these other ILRTs, SNhunt120 exhibits prevalent mid-infrared emission at both early and late phases. From the comparison of SNhunt120 and other ILRTs to electron-capture supernova simulations, we find that the current models underestimate the explosion kinetic energy and thereby produce synthetic light curves that over-estimate the luminosity. Finally, examination of pre-outburst Hubble Space Telescope images yields no progenitor detection. Comment: Paper 1 of a series of 2. Eight pages of text, 14 figures, and 10 tables. Replaced to match the version published on A&A |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1051/0004-6361/202038018 |
| الوصول الحر: | http://arxiv.org/abs/2005.00319Test |
| رقم الانضمام: | edsarx.2005.00319 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1051/0004-6361/202038018 |
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