Are Type Ia Supernovae Standard Candles in the UV?

Details Are Type Ia Supernovae Standard Candles in the UV? Are Type Ia Supernovae Standard Candles in the UV?

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21331203b&link_type=abstract

American Astronomical Society, AAS Meeting #213, #312.03; Bulletin of the American Astronomical Society, Vol. 41, p.289

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Extensive studies have been made of the optical properties of Type Ia supernovae (SNe Ia) focusing on their usefulness as standard or standardizable candles. Recent work on this has expanded to include the NIR and ground-based near-UV. Here we step blueward of the atmospheric cutoff and present the first study of the absolute magnitudes of Type Ia supernovae (SNe) in the UV (2000-3000 Angstroms) using the Swift Ultra-Violet Optical Telescope (UVOT). This has important application to measuring cosmological distances and SN rates for high redshift SNe observed in the optical. The UV region is also important to better understanding some of the potential systematic errors in SN cosmology studies, namely the effects of extinction and metallicity.

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