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 and characterisation of OGLE-TR-122b, the smallestmain-sequence star to date with a direct radius determination. OGLE-TR-122btransits around its solar-type primary every 7.3-days. With M=0.092+-0.009 Moand R=0.120 +0.024-0.013 Ro, it is by far the smallest known eclipsing M-dwarf.The derived mass and radius for OGLE-TR-122b are in agreement with thetheoretical expectations. OGLE-TR-122b is the first observational evidence thatstars can indeed have radii comparable or even smaller than giant planets. Insuch cases, the photometric signal is exactly that of a transiting planet andthe true nature of the companion can only be determined with high-resolutionspectroscopy.Comment: 4 pages, 3 figures, A&A letters, in Press. Revise

A planet-sized transiting star around OGLE-TR-122