Authors
Nathan Smith, Jon C Mauerhan, S Bradley Cenko, Mansi M Kasliwal, Jeffrey M Silverman, Alexei V Filippenko, Avishay Gal-Yam, Kelsey I Clubb, Melissa L Graham, Douglas C Leonard, J Chuck Horst, G Grant Williams, Jennifer E Andrews, Shrinivas R Kulkarni, Peter Nugent, Mark Sullivan, Kate Maguire, Dong Xu, Sagi Ben-Ami
Publication date
2015/5/11
Journal
Monthly Notices of the Royal Astronomical Society
Volume
449
Issue
2
Pages
1876-1896
Publisher
Oxford University Press
Description
The supernova (SN) PTF11iqb was initially classified as a Type IIn event caught very early after explosion. It showed narrow Wolf–Rayet (WR) spectral features on day 2 (as in SN 1998S and SN 2013cu), but the narrow emission weakened quickly and the spectrum morphed to resemble Types II-L and II-P. At late times, Hα exhibited a complex, multipeaked profile reminiscent of SN 1998S. In terms of spectroscopic evolution, we find that PTF11iqb was a near twin of SN 1998S, although with somewhat weaker interaction with circumstellar material (CSM) at early times, and stronger interaction at late times. We interpret the spectral changes as caused by early interaction with asymmetric CSM that is quickly (by day 20) enveloped by the expanding SN ejecta photosphere, but then revealed again after the end of the plateau when the photosphere recedes. The light curve can be matched with a simple model for …
Scholar articles
N Smith, JC Mauerhan, SB Cenko, MM Kasliwal… - Monthly Notices of the Royal Astronomical Society, 2015