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

The Panoramic Imaging Survey of Centaurus and Sculptor (PISCeS) isconstructing a wide-field map of the resolved stellar populations in theextended halos of these two nearby, prominent galaxies. We present newMagellan/Megacam imaging of a $\sim3$ deg$^2$ area around Centaurus A (Cen A),which filled in much of our coverage to its south, leaving a nearly completehalo map out to a projected radius of $\sim$150 kpc and allowing us to identifytwo new resolved dwarf galaxies. We have additionally obtained deep HubbleSpace Telescope (HST) optical imaging of eleven out of the thirteen candidatedwarf galaxies identified around Cen A and presented in Crnojevi\'c et al.(2016): seven are confirmed to be satellites of Cen A, while four are found tobe background galaxies. We derive accurate distances, structural parameters,luminosities and photometric metallicities for the seven candidates confirmedby our HST/ACS imaging. We further study the stellar population along the$\sim$60 kpc long (in projection) stream associated with Dw3, which likely hadan initial brightness of $M_{V}$$\sim$$-$15 and shows evidence for ametallicity gradient along its length. Using the total sample of eleven dwarfsatellites discovered by the PISCeS survey, as well as thirteen brighterpreviously known satellites of Cen A, we present a revised galaxy luminosityfunction for the Cen A group down to a limiting magnitude of $M_V\sim-8$, whichhas a slope of $-1.14\pm0.17$, comparable to that seen in the Local Group andin other nearby groups of galaxies.

The faint end of the Centaurus A satellite luminosity function