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 obtained optical photometry of SN 2003gs on 49 nights, from 2 to 494 daysafter T(B_max). We also obtained near-IR photometry on 21 nights. SN 2003gs wasthe first fast declining Type Ia SN that has been well observed since SN1999by. While it was subluminous in optical bands compared to more slowlydeclining Type Ia SNe, it was not subluminous at maximum light in the near-IRbands. There appears to be a bimodal distribution in the near-IR absolutemagnitudes of Type Ia SNe at maximum light. Those that peak in the near-IRafter T(B_max) are subluminous in the all bands. Those that peak in the near-IRprior to T(B_max), such as SN 2003gs, have effectively the same near-IRabsolute magnitudes at maximum light regardless of the decline rate Deltam_15(B).  Near-IR spectral evidence suggests that opacities in the outer layers of SN2003gs are reduced much earlier than for normal Type Ia SNe. That may allowgamma rays that power the luminosity to escape more rapidly and accelerate thedecline rate. This conclusion is consistent with the photometric behavior of SN2003gs in the IR, which indicates a faster than normal decline fromapproximately normal peak brightness.

the astronomical journal

The fast declining Type Ia supernova 2003gs, and evidence for a  significant dispersion in near-infrared absolute magnitudes of fast decliners  at maximum light