Optical Follow-Up Observations of PTF10qts, a Luminous Broad-Lined Type Ic Supernova Found by the Palomar Transient Factory
astro-ph.HE
/ Authors
E. S. Walker, P. A. Mazzali, E. Pian, K. Hurley, I. Arcavi, S. B. Cenko, A. Gal-Yam, A. Horesh, M. Kasliwal, D. Poznanski
and 15 more authors
J. M. Silverman, M. Sullivan, J. S. Bloom, A. V. Filippenko, S. R. Kulkarni, P. E. Nugent, E. Ofek, S. Barthelmy, W. Boynton, J. Goldsten, S. Golenetskii, M. Ohno, M. S. Tashiro, K. Yamaoka, X. L-. Zhang
/ Abstract
We present optical photometry and spectroscopy of the broad-lined Type Ic supernova (SNIc-BL) PTF10qts, which was discovered as part of the Palomar Transient Factory. The supernova was located in a dwarf galaxy of magnitude $r=21.1$ at a redshift $z=0.0907$. We find that the $R$-band light curve is a poor proxy for bolometric data and use photometric and spectroscopic data to construct and constrain the bolometric light curve. The derived bolometric magnitude at maximum light is $M_{\rm bol} = -18.51\pm0.2$ mag, comparable to that of SN 1998bw ($M_{\rm bol} = -18.7$ mag) which was associated with a gamma-ray burst (GRB). PTF10qts is one of the most luminous SNIc-BL observed without an accompanying GRB. We estimate the physical parameters of the explosion using data from our programme of follow-up observations, finding that it produced a larger mass of radioactive nickel compared to other SNeIc-BL with similar inferred ejecta masses and kinetic energies. The progenitor of the event was likely a $\sim20$M$_{\odot}$ star.