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/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

A statistical analysis of brightness variability of asteroids reveals howtheir shapes evolve from elongated to rough spheroidal forms, presumably drivenby impact-related phenomena. Based on the Sloan Digital Sky Survey MovingObject Catalog, we determined the shape distribution of 11,735 asteroids, withspecial emphasis on eight prominent asteroid families. In young families,asteroids have a wide range of shape elongations, implyingfragmentation-formation. In older families we see an increasing number of roughspheroids, in agreement with the predictions of an impact-driven evolution. Oldfamilies also contain a group of moderately elongated members, which we suggestcorrespond to higher-density, more impact-resistant cores of former fragmentedasteroids that have undergone slow shape erosion. A few percent of asteroidshave very elongated shapes, and can either be young fragments or tidallyreshaped bodies. Our results confirm that the majority of asteroids aregravitationally bound ``rubble piles''.

The shape distribution of asteroid families -- evidence for evolution driven by small impacts