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 assemble 121 spectroscopically-confirmed halo carbon stars, drawn from theliterature, exhibiting measurable variability in the Catalina Surveys. Wepresent their periods and amplitudes, which are used to estimate distances fromperiod-luminosity relationships. The location of the carbon stars - and theirvelocities when available - allow us to trace the streams of the Sagittarius(Sgr) dwarf spheroidal galaxy. These are compared to a canonical numericalsimulation of the accretion of Sgr. We find that the data match this model wellfor heliocentric distances of 15-50 kpc, except for a virtual lack of carbonstars in the trailing arm just north of the Galactic Plane, and there is onlytentative evidence of the leading arm south of the Plane. The majority of thesample can be attributed to the Sgr accretion. We also find groups of carbonstars which are not part of Sgr; most of which are associated with known halosubstructures. A few have no obvious attribution and may indicate newsubstructure. We find evidence that there may be a structure behind the Sgrleading stream apocentre, at ~100 kpc, and a more distant extension to thePisces Overdensity also at ~100 kpc. We study a further 75 carbon stars forwhich no good period data could be obtained, and for which NIR magnitudes andcolours are used to estimate distances. These data add support for the featuresfound at distances beyond 100 kpc.

Tracing the tidal streams of the Sagittarius dSph, and halo Milky Way features, with carbon-rich long-period variables