Supernova 2012ec: identification of the progenitor and early monitoring with PESSTO

J. R. Maund, M. Fraser, S. J. Smartt, M. T. Botticella, C. Barbarino, M. Childress, A. Gal-Yam, C. Inserra, G. Pignata, D. Reichart, B. Schmidt, J. Sollerman, F. Taddia, L. Tomasella, S. Valenti, O. Yaron

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

We present the identification of the progenitor of the Type IIP SN 2012ec in archival pre-explosion Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) and Advanced Camera for Surveys Wide Field Channel F814W images. The properties of the progenitor are further constrained by non-detections in pre-explosion WFPC2 F450W and F606W images. We report a series of early photometric and spectroscopic observations of SN 2012ec. The r'-band light curve shows a plateau with M_{r^' }}=-17.0. The early spectrum is similar to the Type IIP SN 1999em, with the expansion velocity measured at Hα absorption minimum of -11 700 km s-1 (at 1 d post-discovery). The photometric and spectroscopic evolution of SN 2012ec shows it to be a Type IIP SN, discovered only a few days post-explosion (
Original languageEnglish
JournalMonthly Notices of the Royal Astronomical Society
Volume431
Publication statusPublished - 01 Apr 2013

Keywords

  • supernovae: general
  • supernovae: individual: 2012ec
  • galaxies: individual: NGC 1084

Fingerprint Dive into the research topics of 'Supernova 2012ec: identification of the progenitor and early monitoring with PESSTO'. Together they form a unique fingerprint.

Cite this