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

We report the first high spatial resolution submillimeter continuumobservations of the Sagittarius B2 cloud complex using the Submillimeter Array(SMA). With the subarcsecond resolution provided by the SMA, the two massivestar-forming clumps Sgr B2(N) and Sgr B2(M) are resolved into multiple compactsources. In total, twelve submillimeter cores are identified in the Sgr B2(M)region, while only two components are observed in the Sgr B2(N) clump. The gasmass and column density are estimated from the dust continuum emission. We findthat most of the cores have gas masses in excess of 100 M$_{\odot}$ and columndensities above 10$^{25}$ cm$^{-2}$. The very fragmented appearance of SgrB2(M), in contrast to the monolithic structure of Sgr B2 (N), suggests that theformer is more evolved. The density profile of the Sgr B2(N)-SMA1 core is wellfitted by a Plummer density distribution. This would lead one to believe thatin the evolutionary sequence of the Sgr B2 cloud complex, a massive star formsfirst in an homogeneous core, and the rest of the cluster forms subsequently inthe then fragmenting structure.

Submillimeter continuum observations of Sagittarius B2 at subarcsecond spatial resolution