Hawai`i Supernova Flows: A Peculiar Velocity Survey Using Over a Thousand Supernovae in the Near-Infrared
arxiv(2024)
摘要
We introduce the Hawai`i Supernova Flows project and present summary
statistics of the first 1218 astronomical transients observed, 669 of which are
spectroscopically classified Type Ia Supernovae (SNe Ia). Our project is
designed to obtain systematics-limited distances to SNe Ia while consuming
minimal dedicated observational resources. This growing sample will provide
increasing resolution into peculiar velocities as a function of position on the
sky and redshift, allowing us to more accurately map the structure of dark
matter. This can be used to derive cosmological parameters such as σ_8
and can be compared with large scale flow maps from other methods such as
luminosity-line width or luminosity-velocity dispersion correlations in
galaxies. Additionally, our photometry will provide a valuable test bed for
analyses of SNe Ia incorporating near-infrared data. In this survey paper, we
describe the methodology used to select targets, collect and reduce data, and
calculate distances.
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