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TOWARD CHARACTERIZATION OF THE TYPE IIP SUPERNOVA PROGENITOR POPULATION: A STATISTICAL SAMPLE OF LIGHT CURVES FROM Pan-STARRS1

N. E. Sanders, A. M. Soderberg, S. Gezari, M. Betancourt, R. Chornock, E. Berger, R. J. Foley, P. Challis, M. Drout, R. P. Kirshner, R. Lunnan, G. H. Marion (+21 others)
2015 Astrophysical Journal  

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2014 pre-print
arXiv:1404.2004v1 fatcat:qie2cj3babhlzg5nu2cnpv5gyi
2015 accepted
arXiv:1404.2004v2 fatcat:ajx7nwv3c5dnxpf6zx3qagjdsm
In recent years, wide-field sky surveys providing deep multi-band imaging have presented a new path for indirectly characterizing the progenitor populations of core-collapse supernovae (SN): systematic light curve studies. We assemble a set of 76 grizy-band Type IIP SN light curves from Pan-STARRS1, obtained over a constant survey program of 4 years and classified using both spectroscopy and machine learning-based photometric techniques. We develop and apply a new Bayesian model for the full
more » ... ti-band evolution of each light curve in the sample. We find no evidence of a sub-population of fast-declining explosions (historically referred to as "Type IIL" SNe). However, we identify a highly significant relation between the plateau phase decay rate and peak luminosity among our SNe IIP. These results argue in favor of a single parameter, likely determined by initial stellar mass, predominantly controlling the explosions of red supergiants. This relation could also be applied for supernova cosmology, offering a standardizable candle good to an intrinsic scatter of 0.2 mag. We compare each light curve to physical models from hydrodynamic simulations to estimate progenitor initial masses and other properties of the Pan-STARRS1 Type IIP SN sample. We show that correction of systematic discrepancies between modeled and observed SN IIP light curve properties and an expanded grid of progenitor properties, are needed to enable robust progenitor inferences from multi-band light curve samples of this kind. This work will serve as a pathfinder for photometric studies of core-collapse SNe to be conducted through future wide field transient searches.
doi:10.1088/0004-637x/799/2/208 fatcat:p3jmfyrmujhh3lb23p45xpeczi
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Citation

N. E. Sanders, A. M. Soderberg, S. Gezari, M. Betancourt, R. Chornock, E. Berger, R. J. Foley, P. Challis, M. Drout, R. P. Kirshner, R. Lunnan, G. H. Marion, R. Margutti, R. McKinnon, D. Milisavljevic, G. Narayan, A. Rest, E. Kankare, S. Mattila, S. J. Smartt, M. E. Huber, W. S. Burgett, P.W. Draper, K. W. Hodapp, N. Kaiser, R. P. Kudritzki, E. A. Magnier, N. Metcalfe, J. S. Morgan, P. A. Price, J. L. Tonry, R. J. Wainscoat, C. Waters. "TOWARD CHARACTERIZATION OF THE TYPE IIP SUPERNOVA PROGENITOR POPULATION: A STATISTICAL SAMPLE OF LIGHT CURVES FROM Pan-STARRS1." Astrophysical Journal 799.2 (2015) 208