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

Empirically, the estimated lifetime of a typical protoplanetary disk is$<5-10$ Myr. However, the disk lifetimes required to produce a variety ofobserved exoplanetary systems may exceed this timescale. Some hypothesize thatthis inconsistency is due to estimating disk fractions at the cores ofclusters, where radiation fields external to a star-disk system canphotoevaporate the disk. To test this, we have observed a field on the westernoutskirts of the IC 1396 star-forming region with \textit{XMM-Newton} toidentify new Class III YSO cluster members. Our X-ray sample is complete forYSOs down to $1.8\,M_{\odot}$. We use a subset of these X-ray sources that havenear- and mid-infrared counterparts to determine the disk fraction for thisfield. We find that the fraction of X-ray-detected cluster members that hostdisks in the field we observe is $17_{-7}^{+10}\%$ (1$\sigma$), comparable withthe $29_{-3}^{+4}\%$ found in an adjacent field centered on the cometaryglobule IC 1396A. We re-evaluate YSO identifications in the IC 1396A fieldusing \textit{Gaia} parallaxes compared to previous color-cut-onlyidentifications, finding that incorporating independent distance measurementsprovides key additional constraints. Given the existence of at least onemassive star producing an external radiation field in the cluster core, thelack of statistically significant difference in disk fraction in each observedfield suggests that disk lifetimes remain consistent as a function of distancefrom the cluster core.

What's Behind the Elephant's Trunk? Identifying Young Stellar Objects on the Outskirts of IC1396