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 have obtained a Gemini South T-ReCS Qa-band (18.3 micron) image and aSpitzer MIPS SED-mode observation of HD181327, an F5/F6V member of the ~12 Myrold beta Pictoris moving group. We resolve the disk in thermal-emission for thefirst time and find that the northern arm of the disk is 1.4x brighter than thesouthern arm. In addition, we detect a broad peak in the combined Spitzer IRSand MIPS spectra at 60 - 75 micron that may be produced by emission fromcrystalline water ice. We model the IRS and MIPS data using a size distributionof amorphous olivine and water ice grains (dn/da proportional to a^{-2.25} witha_{min} consistent with the minimum blow out size and a_{max} = 20 micron)located at a distance of 86.3 AU from the central star, as observed inpreviously published scattered-light images. Since the photo-desorptionlifetime for the icy particles is ~1400 yr, significantly less than theestimated ~12 Myr age of the system, we hypothesize that we have detecteddebris that may be steadily replenished by collisions among icy Kuiper beltobject-like parent bodies in a newly forming planetary system.

A Possible Icy Kuiper Belt around HD 181327