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Using Line Profiles to Test the Fraternity of Type Ia Supernovae at High and Low Redshifts

Blondin, Stephane; Dessart, Luc; Leibundgut, Bruno; Branch, David; Hoflich, Peter; Tonry, John; Matheson, Thomas; Foley, Ryan; Sollerman, Jesper; Kirshner, Robert P; Clocchiatti, Alejandro; Aguilera, Claudio; Becker, Andrew C; Davis, Tamara; Garnavich, Peter M; Hicken, Malcolm; Miknaitis, Gajus; Prieto, Jose Luis; Riess, Adam; Salvo, Maria; Schmidt, Brian


Using archival data of low-redshift (z < 0.01; Center for Astrophysics and SUSPECT databases) Type Ia supernovae (SNe Ia) and recent observations of high-redshift (0.16 < z < 0.64) SNe Ia, we study the "uniformity" of the spectroscopic properties of nearby and distant SNe Ia. We find no difference in the measurements we describe here. In this paper we base our analysis solely on line-profile morphology, focusing on measurements of the velocity location of maximum absorption (v abs) and peak...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Astronomical Journal
DOI: 10.1086/498724
Access Rights: Open Access


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