English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We used early time photometry and spectroscopy of 12 Type II plateauSupernovae (SNe IIP) to derive their distances using the Expanding PhotosphereMethod (EPM). We performed this study using two sets of Type II supernovae (SNeII) atmosphere models (E96, D05), three filter subsets (BV, BVI, VI) and twomethods for the host galaxy extinctions, which led to 12 Hubble diagrams. Usingthe VI filter subset and the D05 models we obtained a dispersion in the Hubblediagram of sigma = 0.32 mag and a Hubble constant of H0 = 52.4 +/- 4.3 km s-1Mpc-1. We also applied the EPM analysis to the well-observed SN IIP SN 1999em.With the VI filter subset and the D05 models we derived a distance of 13.9 +/-1.4 Mpc, agreement with the Cepheid distance of 11.7 +/- 1.0 Mpc to the SN1999em host galaxy (NGC 1637).

Distance determination to 12 Type II Supernovae using the Expanding Photosphere Method