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

In this paper we derive the Spitzer IRAC band period-luminosity (P-L)relations for the Small Magellanic Cloud (SMC) Cepheids, by matching theSpitzer archival SAGE-SMC data with the OGLE-III SMC Cepheids. We find that the3.6micron and 4.5micron band P-L relations can be better described using twoP-L relations with a break period at log(P)=0.4: this is consistent withsimilar results at optical wavelengths for SMC P-L relations. The 5.8micron and8.0micron band P-L relations do not extend to sufficiently short periods toenable a similar detection of a slope change at log(P)=0.4. The slopes of theSMC P-L relations, for log(P)>0.4, are consistent with their LMC counterpartsthat were derived from a similar dataset. They are also in agreement with thoseobtained from a small sample of Galactic Cepheids with parallax measurements.

The Mid-Infrared Period-Luminosity Relations for the Small Magellanic Cloud Cepheids Derived from Spitzer Archival Data