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

A long standing problem in astrochemistry is the inability of many currentmodels to account for missing sulfur content. Many relatively simple speciesthat may be good candidates to sequester sulfur have not been measuredexperimentally at the high spectral resolution necessary to enableradioastronomical identification. On the basis of new laboratory data, wereport searches for the rotational lines in the microwave, millimeter, andsub-millimeter regions of the sulfur-containing hydrocarbon HCCSH. This simplespecies would appear to be a promising candidate for detection in space owingto the large dipole moment along its $b$-inertial axis, and because thebimolecular reaction between two highly abundant astronomical fragments (CCHand SH radicals) may be rapid. An inspection of multiple line surveys from thecentimeter to the far-infrared toward a range of sources from dark clouds tohigh-mass star-forming regions, however, resulted in non-detections. Ananalogous search for the lowest-energy isomer, H$_2$CCS, is presented forcomparison, and also resulted in non-detections. Typical upper limits on theabundance of both species relative to hydrogen are $10^{-9}$-$10^{-10}$. Wethus conclude that neither isomer is a major reservoir of interstellar sulfurin the range of environments studied. Both species may still be viablecandidates for detection in other environments or at higher frequencies,providing laboratory frequencies are available.

Searches for Interstellar HCCSH and H$_2$CCS