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Fixing the U-band photometry of Type Ia supernovae
Kevin Krisciunas, Deepak Bastola, Juan Espinoza +8
We present previously unpublished photometry of supernovae 2003gs and 2003hv. Using spectroscopically-derived corrections to the U-band photometry, we reconcile U-band light curves…
Atmospheric extinction properties above Mauna Kea from the Nearby Supernova Factory spectro-photometric data set
C. Buton, Y. Copin, G. Aldering +30
We present a new atmospheric extinction curve for Mauna Kea spanning 3200--9700 Å. It is the most comprehensive to date, being based on some 4285 standard star spectra obtained on…
A Search for New Candidate Super-Chandrasekhar-Mass Type Ia Supernovae in the Nearby Supernova Factory Dataset
The Nearby Supernova Factory, :, R. Scalzo +32
We present optical photometry and spectroscopy of five type Ia supernovae discovered by the Nearby Supernova Factory selected to be spectroscopic analogues of the candidate super-C…
PTF11kx: A Type-Ia Supernova with a Symbiotic Nova Progenitor
B. Dilday, D. A. Howell, S. B. Cenko +32
There is a consensus that Type-Ia supernovae (SNe Ia) arise from the thermonuclear explosion of white dwarf stars that accrete matter from a binary companion. However, direct obser…
Hubble Space Telescope studies of low-redshift Type Ia supernovae: Evolution with redshift and ultraviolet spectral trends
K. Maguire, M. Sullivan, R. S. Ellis +26
We present an analysis of the maximum light, near ultraviolet (NUV; 2900-5500 A) spectra of 32 low redshift (0.001<z<0.08) Type Ia supernovae (SNe Ia), obtained with the Hubble Spa…
Precision Measurement of The Most Distant Spectroscopically Confirmed Supernova Ia with the Hubble Space Telescope
D. Rubin, R. A. Knop, E. Rykoff +25
We report the discovery of a redshift 1.71 supernova in the GOODS North field. The Hubble Space Telescope (HST) ACS spectrum has almost negligible contamination from the host or ne…