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

A fast moving infrared excess source (G2) which is widely interpreted as acore-less gas and dust cloud approaches Sagittarius A* (SgrA*) on a presumablyelliptical orbit. VLT K_s-band and Keck K'-band data result in clear continuumidentifications and proper motions of this about 19m Dusty S-cluster Object(DSO). In 2002-2007 it is confused with the star S63, but free of confusionagain since 2007. Its near-infrared (NIR) colors and a comparison to othersources in the field speak in favor of the DSO being an IR excess star withphotospheric continuum emission at 2 microns than a core-less gas and dustcloud. We also find very compact L'-band emission ($<$0.1'') contrasted by thereported extended (0.03'' up to about 0.2'' for the tail) Brgamma emission. Thepresence of a star will change the expected accretion phenomena, since astellar Roche lobe may retain a fraction of the material during and after theperi-bothron passage.

The infrared K-band identification of the DSO/G2 source from VLT and Keck data