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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Context: While star formation on large molecular cloud scales and on smallcore and disk scales has been investigated intensely over the past decades, theconnection of the large-scale interstellar material with the densestsmall-scale cores has been a largely neglected field.  Methods: Using NOEMA and the IRAM 30\,m telescope, we mapped large areas(640\,arcmin$^2$) of the archetypical star formation complex Cygnus X at3.6\,mm wavelengths in line and continuum emission.  Results: The scope and outline of The Cygnus Allscale Survey of Chemistry andDynamical Environments (CASCADE) is presented. We then focus on the firstobserved subregion in Cygnus X, namely the DR20 star formation site, whichcomprises sources in a range of evolutionary stages from cold pristine gasclumps to more evolved ultracompact H{\sc ii} regions. The data covering cloudto cores scales at a linear spatial resolution of $<5000$\,au reveal severalkinematic cloud components that are likely part of several large-scale flowsonto the central cores. The temperature structure of the region is investigatedby means of the HCN/HNC intensity ratio and compared to dust-derivedtemperatures. We find that the deuterated DCO$^+$ emission is almostexclusively located toward regions at low temperatures below 20\,K.Investigating the slopes of spatial power spectra of dense gas tracer intensitydistributions (HCO$^+$, H$^{13}$CO$^+$, and N$_2$H$^+$), we find comparativelyflat slopes between $-2.9$ and $-2.6$, consistent with high Mach numbers and/oractive star formation in DR20.

astronomy and astrophysics

The Cygnus Allscale Survey of Chemistry and Dynamical Environments:  CASCADE: Overview and first results toward DR20 from the Max Planck IRAM  Observatory program (MIOP)