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 a deep, singular eclipse of the bona fide browndwarf Roque 12, a substellar member of the Pleiades. The eclipse was 0.65magdeep, lasted 1.3h, and was observed with two telescopes simultaneously inOctober 2002. No further eclipse was recorded, despite continuous monitoringwith Kepler/K2 over 70d in 2015. There is tentative (2sigma) evidence forradial velocity variations of 5km/s, over timescales of three months. The bestexplanation for the eclipse is the presence of a companion on an eccentricorbit. The observations constrain the eccentricity to e>0.5, the period toP>70d, and the mass of the companion to ~0.001-0.04Msol. In principle it isalso possible that the eclipse is caused by circum-sub-stellar material. Futuredata releases by Gaia and later LSST as well as improved radial velocityconstraints may be able to unambiguously confirm the presence of the companion.This would turn the system into one of the very few known eclipsing binarybrown dwarfs with known age.

The one that got away: A unique eclipse in the young brown dwarf Roque 12