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 discovery of two new dwarf galaxies, Lacerta I/Andromeda XXXI(Lac I/And XXXI) and Cassiopeia III/Andromeda XXXII (Cas III/And XXXII), instacked Pan-STARRS1 r_P1- and i_P1-band imaging data. Both are luminous systems(M_V ~ -12) located at projected distances of 20.3{\deg} and 10.5{\deg} fromM31. Lac I and Cas III are likely satellites of the Andromeda galaxy withheliocentric distances of 756^{+44}_{-28} kpc and 772^{+61}_{-56} kpc,respectively, and corresponding M31-centric distances of 275+/-7 kpc and144^{+6}_{-4} kpc . The brightest of recent Local Group member discoveries,these two new dwarf galaxies owe their late discovery to their large sizes (r_h= 4.2^{+0.4}_{-0.5} arcmin or 912^{+124}_{-93} pc for Lac I; r_h =6.5^{+1.2}_{-1.0} arcmin or 1456+/-267 pc for Cas III), and consequently lowsurface brightness (\mu_0 ~ 26.0 mag/arcsec^2), as well as to the lack of asystematic survey of regions at large radii from M31, close to the Galacticplane. This latter limitation is now alleviated by the 3{\pi} Pan-STARRS1survey, which could lead to the discovery of other distant Andromeda satellitedwarf galaxies.

Lacerta I and Cassiopeia III: Two luminous and distant Andromeda satellite dwarf galaxies found in the 3{\pi} Pan-STARRS1 survey