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

We report the discovery of a tight substellar companion to the young solaranalog PZ Tel, a member of the Beta Pictoris moving group observed with highcontrast adaptive optics imaging as part of the Gemini NICI Planet-FindingCampaign. The companion was detected at a projected separation of 16.4 +/- 1.0AU (0.33 +/- 0.01") in April 2009. Second-epoch observations in May 2010demonstrate that the companion is physically associated and shows significantorbital motion. Monte Carlo modeling constrains the orbit of PZ Tel B toeccentricities > 0.6. The near-IR colors of PZ Tel B indicate a spectral typeof M7+/-2 and thus this object will be a new benchmark companion for studies ofultracool, low-gravity photospheres. Adopting an age of 12 +8 -4 Myr for thesystem, we estimate a mass of 36 +/- 6 Mjup based on the Lyon/DUSTYevolutionary models. PZ Tel B is one of few young substellar companionsdirectly imaged at orbital separations similar to those of giant planets in ourown solar system. Additionally, the primary star PZ Tel A shows a 70 umemission excess, evidence for a significant quantity of circumstellar dust thathas not been disrupted by the orbital motion of the companion.

The Gemini NICI Planet-Finding Campaign: Discovery of a Close Substellar Companion to the Young Debris Disk Star PZ Tel