NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-20 T01:11:52 PDT
Help | Comment | NED Home

For refcode 2006AJ....132..189J:
Retrieve 16 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2006AJ....132..189J Late-Time Spectroscopy of SN 2002cx: The Prototype of a New Subclass of Type Ia Supernovae Saurabh Jha, David Branch, Ryan Chornock, Ryan J. Foley, Weidong Li, Brandon J. Swift, Darrin Casebeer, and Alexei V. Filippenko Abstract. We present Keck optical spectra of SN 2002cx, the most peculiar known Type Ia supernova (SN Ia), taken 227 and 277 days past maximum light. Astonishingly, the spectra are not dominated by the forbidden emission lines of iron that are a hallmark of thermonuclear SNe in the nebular phase. Instead, we identify numerous P Cygni profiles of Fe II at very low expansion velocities of ~700 km s^-1^, which are without precedent in SNe Ia. We also report the tentative identification of low-velocity O i in these spectra, suggesting the presence of unburned material near the center of the exploding white dwarf. SN 2002cx is the prototype of a new subclass of SNe Ia, with spectral characteristics that may be consistent with recent pure deflagration models of Chandrasekhar-mass thermonuclear SNe. These are distinct from the majority of SNe Ia, for which an alternative explosion mechanism, such as a delayed detonation, may be required. Key words: Stars: Supernovae: General, supernovae: individual (SN 2002cx)
Retrieve 16 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home