Analysis of Type IIn SN 1998S: Effects of Circumstellar Interaction on Observed Spectra
Lentz, Eric; Baron, E; Lundqvist, Peter; Branch, David; Hauschildt, Peter H; Fransson, Claes; Garnavich, Peter M; Bastian, Nate; Filippenko, Alexei; Kirshner, Robert P; Challis, Peter M; Jha, Saurabh; Leibundgut, Bruno; McCray, Richard; Michael, Eli; Panagia, Nino; Phillips, Mark M; Pun, Chun J S; Schmidt, Brian; Sonneborn, George; Suntzeff, Nicholas B; Wang, Lifan; Wheeler, J Craig
We present spectral analysis of early observations of the Type IIn supernova 1998S using the general non-local thermodynamic equilibrium atmosphere code PHOENIX. We model both the underlying supernova spectrum and the overlying circumstellar interaction region and produce spectra in good agreement with observations. The early spectra are well fitted by lines produced primarily in the circumstellar region itself, and later spectra are due primarily to the supernova ejecta. Intermediate spectra...[Show more]
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|Source:||Astrophysical Journal, The|
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