Photometric and spectroscopic properties of Type II-P supernovae

T. Faran, D. Poznanski*, A. V. Filippenko, R. Chornock, R. J. Foley, M. Ganeshalingam, D. C. Leonard, W. Li, M. Modjaz, E. Nakar, F. J.D. Serduke, J. M. Silverman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

88 Scopus citations

Abstract

We study a sample of 23 Type II plateau supernovae (SNe II-P), all observed with the same set of instruments. Analysis of their photometric evolution confirms that their typical plateau duration is 100 d with little scatter, showing a tendency to get shorter for more energetic SNe. We examine the claimed correlation between the luminosity and the rise time from explosion to plateau. We analyse their spectra, measuring typical ejecta velocities, and confirm that they follow a well-behaved power-law decline. We find indications of high-velocity material in the spectra of six of our SNe. We test different dust-extinction correction methods by asking the following - does the uniformity of the sample increase after the application of a given method? A reasonably behaved underlying distribution should become tighter after correction. No method we tested made a significant improvement.

Original languageEnglish (US)
Pages (from-to)844-861
Number of pages18
JournalMonthly Notices of the Royal Astronomical Society
Volume442
Issue number1
DOIs
StatePublished - Jun 2014
Externally publishedYes

Keywords

  • Supernovae: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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