ESC* supernova spectroscopy of non-ESC targets

A. H. Harutyunyan, P. Pfahler, A. Pastorello, S. Taubenberger, M. Turatto, E. Cappellaro, S. Benetti, N. Elias-Rosa, H. Navasardyan, S. Valenti, V. Stanishev, F. Patat, M. Riello, G. Pignata, W. Hillebrandt

Research output: Contribution to journalArticlepeer-review

86 Citations (Scopus)

Abstract

Aims.We present the spectra of 36 supernovae (SNe) of various types, obtained by the European Supernova Collaboration. Because of the spectral classification and the phase determination at their discovery the SNe did not warrant further study, and the spectra we present are the only ones available for the respective objects. In this paper we present and discuss this material using a new software for the automated classification of SNe spectra. Methods. As a validation of the software, we verify the classification and phase estimate reported for these objects in their discovery/ classification circulars. For the comparison, the software uses the library of template spectra of Padova-Asiago Supernova Archive (ASA). Results.For each spectrum of our sample we present a brief, individual discussion, highlighting the main characteristics and possible peculiarities. The comparison with ASA spectra confirms the previous classification of all objects and refines the age estimates. For our software, we determine numerical limits of "safe" spectral classification and the uncertainties of the phase determination.

Original languageEnglish
Pages (from-to)383-399
Number of pages17
JournalAstronomy and Astrophysics
Volume488
Issue number1
DOIs
Publication statusPublished - Sep 2008

Keywords

  • Methods: data analysis
  • Supernovae: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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