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

The survey for DUST In Nearby Galaxies with Spitzer (DUSTiNGS) has identifiedhundreds of candidate dust-producing Asymptotic Giant Branch (AGB) stars inseveral nearby metal-poor galaxies. We have obtained multi-epoch follow-upobservations for these candidates with the Spitzer Space Telescope and measuredtheir infrared (IR) lightcurves. This has allowed us to confirm their AGBnature and investigate pulsation behavior at very low metallicity. We haveobtained high-confidence pulsation periods for 88 sources in seven galaxies. Wehave confirmed DUSTiNGS variable star candidates with a 20% success rate, anddetermined the pulsation properties of 19 sources already identified asThermally-Pulsing AGB (TP-AGB) stars. We find that the AGB pulsation propertiesare similar in all galaxies surveyed here, with no discernible differencebetween the DUSTiNGS galaxies (down to 1.4% solar metallicity; [Fe/H]=-1.85)and the far more metal-rich Magellanic Clouds (up to 50% solar metallicity;[Fe/H]=-0.38). These results strengthen the link between dust production andpulsation in AGB stars and establish the IR Period-Luminosity (P - L) relationas a reliable tool (+/- 4%) for determining distances to galaxies, regardlessof metallicity.

An Infrared Census Of Dust In Nearby Galaxies With Spitzer (DUSTiNGS): V. The Period-luminosity Relation For Dusty Metal-Poor AGB Stars