Hawai’i Supernova Flows: a peculiar velocity survey using over a thousand supernovae in the near-infrared (Do A. et al., 2025, MNRAS, 536, 624)

Hawai’i Supernova Flows: a peculiar velocity survey using over a thousand supernovae in the near-infrared (Do A. et al., 2025, MNRAS, 536, 624)

The figure above depicts distance modulus versus redshift for a subset of the Hawai’i Supernova Flows sample with colors indicating predicted peculiar velocity from the 2M++ model. This survey will directly measure the component of Hubble scatter from peculiar velocities. UKIRT’s NIR coverage should reduce distance scatter by up to 30% and substantially reduce systemic uncertainties from dust reddening.

Leave a Reply

Your email address will not be published. Required fields are marked *