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The Host Galaxies of Type Ia Supernovae Discovered by the Palomar Transient Factory
Y. -C. Pan, M. Sullivan, K. Maguire +16
We present spectroscopic observations of the host galaxies of 82 low-redshift type Ia supernovae (SNe Ia) discovered by the Palomar Transient Factory (PTF). We determine star-forma…
Measuring cosmic bulk flows with Type Ia Supernovae from the Nearby Supernova Factory
U. Feindt, M. Kerschhaggl, M. Kowalski +33
Context. Our Local Group of galaxies appears to be moving relative to the cosmic microwave background with the source of the peculiar motion still uncertain. While in the past this…
Evidence of Environmental Dependencies of Type Ia Supernovae from the Nearby Supernova Factory indicated by Local Hα
M. Rigault, Y. Copin, G. Aldering +33
(Abridged) We study the host galaxy regions in close proximity to Type Ia supernovae (SNe Ia) to analyze relations between the properties of SN Ia events and environments most simi…
Supernova spectra below strong circum-stellar interaction
G. Leloudas, E. Y. Hsiao, J. Johansson +9
We construct spectra of supernovae interacting strongly with a circumstellar medium (CSM) by adding SN templates, a black-body continuum and an emission-line spectrum. In a Monte C…
Standardizing Type Ia Supernova Absolute Magnitudes Using Gaussian Process Data Regression
A. G. Kim, R. C. Thomas, G. Aldering +32
We present a novel class of models for Type Ia supernova time-evolving spectral energy distributions (SED) and absolute magnitudes: they are each modeled as stochastic functions de…
Spectrophotometric time series of SN 2011fe from the Nearby Supernova Factory
R. Pereira, R. C. Thomas, G. Aldering +36
We present 32 epochs of optical (3300-9700 Å) spectrophotometric observations of the nearby quintessential "normal" type Ia supernova (SN Ia) SN 2011fe in the galaxy M101, extendin…