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

Star-forming dwarf galaxies leaking Lyman-continuum (LyC) radiation may haveplayed an important role in the reionization of the Universe. Local galaxiesexhibiting LyC leakage could shed light on the escape mechanisms, but so faronly two such cases have been identified. Here we want to investigate whetherthe lack of local LyC emitters can be caused in part by biased selectioncriteria (e.g. strong H-alpha emission), and we present a novel method ofselecting targets with high escape fractions. By applying these criteria, weassemble a sample of observation targets to study their basic properties.  We introduce a new strategy where potential LyC leakers are selected by theirblue colours and weak (instead of strong) emission lines. We take a closer lookat 8 LyC leaking candidates at z ~ 0.03, selected from the Sloan Digital SkySurvey (SDSS), which we observe with ESO/NTT in broadband B and H-alpha. Wefind that 7 of the 8 galaxies are involved in interaction with neighbours orshow signs of mergers. In 7 cases the young stellar population is clearlydisplaced from the main body of the galaxies. Half of our targets showabsorption spectra with post-starburst signatures. The scale lengths in H-alphaare typically 30% smaller than those of the stellar continua, indicating rampressure stripping. We tentatively identify a few conditions favourable forleakage: 1) the combined effects of ram pressure stripping with supernova windsfrom young stars formed in the front, 2) merger events that increase the starformation rate and displace stars from gas, 3) starbursts in the centres ofpost-starburst galaxies, and 4) a low dust content.

Lyman continuum leaking galaxies - Search strategies and local candidates