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

Time series observations of the dwarf planet Haumea and the Plutinos 2003VS2and 2003AZ84 with Herschel/PACS are presented in this work. Thermal emission ofthese trans-Neptunian objects were acquired as part of the TNOs are CoolHerschel Space Observatory key programme. We search for the thermal lightcurves at 100 and 160um of Haumea and 2003AZ84, and at 70 and 160um for 2003VS2by means of photometric analysis of the PACS data. The goal of this work is touse these thermal light curves to obtain physical and thermophysical propertiesof these icy Solar System bodies. Haumea's thermal light curve is clearlydetected at 100 and 160um. The effect of the reported dark spot is apparent at100um. Different thermophysical models were applied to these light curves,varying the thermophysical properties of the surface within and outside thespot. Although no model gives a perfect fit to the thermal observations,results imply an extremely low thermal inertia (< 0.5 MKS) and a high phaseintegral (> 0.73) for Haumea's surface. We note that the dark spot regionappears to be only weakly different from the rest of the object, with modestchanges in thermal inertia and/or phase integral. The thermal light curve of2003VS2 is not firmly detected at 70 and at 160um but a thermal inertia of2+/-0.5 MKS can be derived from these data. The thermal light curve of 2003AZ84is not firmly detected at 100um. We apply a thermophysical model to the meanthermal fluxes and to all the Herschel/PACS and Spitzer/MIPS thermal data of2003AZ84, obtaining a close to pole-on orientation as the most likely for thisTNO. For the three TNOs, the thermal inertias derived from light curve analysesor from the thermophysical analysis of the mean thermal fluxes confirm thegenerally small or very small surface thermal inertias of the TNO population,which is consistent with a statistical mean value of 2.5+/-0.5 MKS.

TNOs are Cool: a survey of the Transneptunian Region XII. Thermal light curves of Haumea, 2003 VS2 and 2003 AZ84 with Herschel Space Observatory-PACS