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 an ultra-deep survey for Neptune Trojans using the Subaru 8.2-mand Magellan 6.5-m telescopes. The survey reached a 50% detection efficiency inthe R-band at 25.7 magnitudes and covered 49 square degrees of sky. This depthcorresponds to Neptune Trojans that are about 16 km in radius (assuming analbedo of 0.05). A paucity of smaller Neptune Trojans (radii < 45 km) comparedto larger ones was found. The brightest Neptune Trojans appear to follow asteep power-law slope (q = 5+-1) similar to the brightest objects in the otherknown stable reservoirs such as the Kuiper Belt, Jupiter Trojans and main beltasteroids. We find a roll-over for the Neptune Trojans that occurs around aradii of r=45+-10 km (23.5+-0.3 mags), which is also very similar to the otherstable reservoirs. All the observed stable regions in the the solar system showevidence for Missing Intermediate Sized Planetesimals (MISPs). This indicates aprimordial and not collisional origin, which suggests planetesimal formationproceeded directly from small to large objects. The scarcity of intermediateand smaller sized Neptune Trojans may limit them as being a strong source forthe short period comets.

The Size Distribution of the Neptune Trojans and the Missing Intermediate Sized Planetesimals