Bright but slow - Type II supernovae from OGLE-IV - Implications for magnitude-limited surveys

D. Poznanski, Z. Kostrzewa-Rutkowska, L. Wyrzykowski, N. Blagorodnova

Research output: Contribution to journalArticlepeer-review

Abstract

We study a sample of 11 Type II supernovae (SNe) discovered by the OGLE-IV survey. All objects have well-sampled I-band light curves, and at least one spectrum. We find that two or three of the 11 SNe have a declining light curve, and spectra consistent with other SNe II-L, while the rest have plateaus that can be as short as 70 d, unlike the 100 d typically found in nearby galaxies. The OGLE SNe are also brighter, and show that magnitude-limited surveys find SNe that are different than usually found in nearby galaxies.We discuss this sample in the context of understanding Type II SNe as a class and their suggested use as standard candles.

Original languageEnglish
Pages (from-to)1753-1759
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Volume449
Issue number2
DOIs
StatePublished - 11 May 2015

Keywords

  • Supernovae: general

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