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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Compact disc galaxies (CDGs) with high surface brightness were identified inthe Sloan Digital Sky Survey (SDSS) data. We determined the surface profiles ofthe CDGs and compared them to those of normal-sized disk galaxies (NDGs). TheCDGs have higher central brightness and older stellar age than the NDGs.Furthermore, the brightness profiles of the CDGs fit a S{\'e}rsic model with $n\approx 2.11$ and have a zero $g^{\prime}-r^{\prime}$ color gradient onaverage. By contrast, the NDGs fit an exponential profile and have a negativecolor gradient on average. These results indicate that the structure andstellar population of the CDGs and NDGs differ. We suggest that the CDGs areancient galaxies in the quenching phase following the initial centralstarburst.

Discovery of compact disc Galaxies with High Surface Brightness in the Sloan Digital Sky Survey