Search For Type Ia Supernova NUV-Optical Subclasses
arXiv:1611.02984 · doi:10.1093/mnras/stw3109
Abstract
In response to a recently reported observation of evidence for two classes of Type Ia Supernovae (SNe Ia) distinguished by their brightness in the rest-frame near ultraviolet (NUV), we search for the phenomenon in publicly available light-curve data. We use the SNANA supernova analysis package to simulate SN Ia-light curves in the Sloan Digital Sky Survey Supernova Search (SDSS) and the Supernova Legacy Survey (SNLS) with a model of two distinct ultraviolet classes of SNe Ia and a conventional model with a single broad distribution of SN-Ia ultraviolet brightnesses. We compare simulated distributions of rest-frame colors with these two models to those observed in 158 SNe Ia in the SDSS and SNLS data. The SNLS sample of 99 SNe Ia is in clearly better agreement with a model with one class of SN Ia light curves and shows no evidence for distinct NUV sub-classes. The SDSS sample of 59 SNe Ia with poorer color resolution does not distinguish between the two models.
8 pages, in review at MNRAS
References in corpus (12)
- Big-Bang Nucleosynthesis
- The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
- The Swift Ultra-Violet/Optical Telescope
- Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples
- The Supernova Legacy Survey 3-year sample: Type Ia Supernovae photometric distances and cosmological constraints
- The Sloan Digital Sky Survey-II Supernova Survey: Technical Summary
- SNANA: A Public Software Package for Supernova Analysis
- An Updated Ultraviolet Calibration for the Swift/UVOT
- Systematic Uncertainties Associated with the Cosmological Analysis of the First Pan-STARRS1 Type Ia Supernova Sample
- Measuring Type Ia Supernova Populations of Stretch and Color and Predicting Distance Biases
- Testing Models of Intrinsic Brightness Variations in Type Ia Supernovae, and their Impact on Measuring Cosmological Parameters
- The Changing Fractions of Type Ia Supernova NUV-Optical Subclasses with Redshift
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- Red and Reddened: Ultraviolet through Near-Infrared Observations of Type Ia Supernova 2017erp
- Reddened, Redshifted, or Intrinsically Red? Understanding Near-Ultraviolet Colors of Type Ia Supernovae
- Understanding Type Ia supernovae through their U-band spectra