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 present a generic algorithm to search for dwarf galaxies in photometriccatalogs and apply it to the Pan-Andromeda Archaeological Survey (PAndAS). Thealgorithm is developed in a Bayesian framework and, contrary to mostdwarf-galaxy-search codes, makes use of both the spatial and color-magnitudeinformation of sources in a probabilistic approach. Accounting for thesignificant contamination from the Milky Way foreground and from the structuredstellar halo of the Andromeda galaxy, we recover all known dwarf galaxies inthe PAndAS footprint with high significance, even for the least luminous ones.Some Andromeda globular clusters are also recovered and, in one case,discovered. We publish a list of the 143 most significant detections yielded bythe algorithm. The combined properties of the 39 most significant isolateddetections show hints that at least some of these trace genuine dwarf galaxies,too faint to be individually detected. Follow-up observations by the communityare mandatory to establish which are real members of the Andromeda satellitesystem. The search technique presented here will be used in an upcomingcontribution to determine the PAndAS completeness limits for dwarf galaxies.Although here tuned to the search of dwarf galaxies in the PAndAS data, thealgorithm can easily be adapted to the search for any localised overdensitywhose properties can be modeled reliably in the parameter space of any catalog.

The PAndAS view of the Andromeda satellite system - I. A Bayesian search for dwarf galaxies using spatial and color-magnitude information