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

G0.253+0.016, aka 'the Brick', is one of the most massive (> 10^5 Msun) anddense (> 10^4 cm-3) molecular clouds in the Milky Way's Central Molecular Zone.Previous observations have detected tentative signs of active star formation,most notably a water maser that is associated with a dust continuum source. Wepresent ALMA Band 6 observations with an angular resolution of 0.13" (1000 AU)towards this 'maser core', and report unambiguous evidence of active starformation within G0.253+0.016. We detect a population of eighteen continuumsources (median mass ~ 2 Msun), nine of which are driving bi-polar molecularoutflows as seen via SiO (5-4) emission. At the location of the water maser, wefind evidence for a protostellar binary/multiple with multi-directional outflowemission. Despite the high density of G0.253+0.016, we find no evidence forhigh-mass protostars in our ALMA field. The observed sources are insteadconsistent with a cluster of low-to-intermediate-mass protostars. However, themeasured outflow properties are consistent with those expected forintermediate-to-high-mass star formation. We conclude that the sources areyoung and rapidly accreting, and may potentially form intermediate andhigh-mass stars in the future. The masses and projected spatial distribution ofthe cores are generally consistent with thermal fragmentation, suggesting thatthe large-scale turbulence and strong magnetic field in the cloud do notdominate on these scales, and that star formation on the scale of individualprotostars is similar to that in Galactic disc environments.

Star formation in 'the Brick': ALMA reveals an active proto-cluster in the Galactic centre cloud G0.253+0.016