AAS 207th Meeting, 8-12 January 2006
Session 180 Supernovae and Cosmology
Poster, Thursday, 9:20am-4:00pm, January 12, 2006, Exhibit Hall

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[180.07] ESSENCE Photometry and SN Light-Curve Fitting

W. M. Wood-Vasey (Harvard/CfA), A. Clocchiatti (PUC), S. Jha (UC Berkeley), G. Miknaitis (Fermilab; U of Washington), G. Pignata (PUC), A. Rest (CTIO), C. W. Stubbs (Harvard/CfA), ESSENCE Collaboration

We present and discuss the photometric measurements and analysis of SN Ia light curves from the first 3 years of the ESSENCE project. We have used and verified multiple photometric packages to thoroughly understand and cross-check our photometry. Using both deep-template and NN2-based frame-subtraction methods to achieve high signal-to-noise ratio lightcurves, we detail the complementarity of both approaches in minimizing systematics in the ESSENCE photometry. To understand our calibration of the relative luminosity distances to our SNe Ia, we compare the results of 3 different SN Ia lightcurve luminosity width-brightness packages: MLCS2k2, Dm15, and BATM.

This work is partially supported by grant AST-0443378 from the US National Science Foundation.

If you would like more information about this abstract, please follow the link to http://www.ctio.noao.edu/~wsne/. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: wmwood-vasey@cfa.harvard.edu

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