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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We have extensively mapped a sample of dense molecular clouds (L1512, TMC-1C,L1262, Per 7, L1389, L1251E) in lines of HC3N, CH3OH, SO and C^{18}O. Wedemonstrate that a high degree of chemical differentiation is present in all ofthe observed clouds. We analyse the molecular maps for each cloud,demonstrating a systematic chemical differentiation across the sample, which werelate to the evolutionary state of the cloud. We relate our observations tothe cloud physical, kinematical and evolutionary properties, and also comparethem to the predictions of simple chemical models. The implications of thiswork for understanding the origin of the clumpy structures and chemicaldifferentiation observed in dense clouds are discussed.

Observations of chemical differentiation in clumpy molecular clouds