Eric Y. Hsiao University of Victoria.  less dust extinction  low redshift  standard candles in JHK bands  independent measure of Hubble constant 

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Presentation transcript:

Eric Y. Hsiao University of Victoria

 less dust extinction  low redshift  standard candles in JHK bands  independent measure of Hubble constant  high redshift  rest frame I band Hubble diagram  independent evidence of dark energy 224th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

324th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

4 Krisciunas et al ApJ, 602, 81 24th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

524th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

624th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

724th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

824th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

924th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

1024th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

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1224th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

procedures for template construction:  measures the feature strengths of the library spectra  determines the mean feature strength at each epoch and wavelength  adjusts a spectral template to the mean feature strengths Eric Y. Hsiao24 th Texas Symposium on Relativistic Astrophysics - Vancouver, Hsiao et al ApJ, 663, 1187

1424th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

1524th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

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1824th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao CSP

1924th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao CSP

 spectroscopic properties of SNe Ia in the NIR quite uniform  slow temporal evolution of spectral features  k-correction errors small near NIR maximum  k-corrections using 1 SN can cause significant systematic errors  spectroscopic properties in the I band as uniform as in the BV bands 2024th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

2124th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao

2224th Texas Symposium on Relativistic Astrophysics - Vancouver, Eric Y. Hsiao