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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 on theme: "Eric Y. Hsiao University of Victoria.  less dust extinction  low redshift  standard candles in JHK bands  independent measure of Hubble constant "— Presentation transcript:

1 Eric Y. Hsiao University of Victoria

2  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, 2008.12.09Eric Y. Hsiao

3 324th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

4 4 Krisciunas et al. 2004 ApJ, 602, 81 24th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

5 524th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

6 624th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

7 724th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

8 824th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

9 924th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

10 1024th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

11 1124th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

12 1224th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

13 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, 2008.12.0913 Hsiao et al. 2007 ApJ, 663, 1187

14 1424th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

15 1524th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

16 1624th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

17 1724th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

18 1824th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao CSP

19 1924th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao CSP

20  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, 2008.12.09Eric Y. Hsiao

21 2124th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

22 2224th Texas Symposium on Relativistic Astrophysics - Vancouver, 2008.12.09Eric Y. Hsiao

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