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

Transiting planets around stars are discovered mostly through photometricsurveys. Unlike radial velocity surveys, photometric surveys do not tend totarget slow rotators, inactive or metal-rich stars. Nevertheless, we suspectthat observational biases could also impact transiting-planet hosts. This paperaims to evaluate how selection effects reflect on the evolutionary stage ofboth a limited sample of transiting-planet host stars (TPH) and a wider sampleof planet-hosting stars detected through radial velocity analysis. Then, thanksto uniform derivation of stellar ages, a homogeneous comparison betweenexoplanet hosts and field star age distributions is developed. Stellarparameters have been computed through our custom-developed isochrone placementalgorithm, according to PARSEC models. The notable aspects of our algorithminclude the treatment of element diffusion, activity checks in terms of$\log{R'_{HK}}$ and $v\sin{i}$, and the evaluation of the stellar evolutionaryspeed in the Hertzsprung-Russel diagram in order to better constrain age.Working with TPH, the observational stellar mean density $\rho_{\star}$ allowsus to compute stellar luminosity even if the distance is not available, bycombining $\rho_{\star}$ with the spectroscopic $\log{g}$. The median value ofthe TPH ages is $\sim5$ Gyr. Even if this sample is not very large, however,the result is very similar to what we found for the sample of spectroscopichosts, whose modal and median values are [3, 3.5) Gyr and $\sim4.8$ Gyr,respectively. Thus, these stellar samples suffer almost the same selectioneffects. We also conclude that the age of our Sun is consistent with the agedistribution of solar neighbourhood MS stars with spectral types from late F toearly K, regardless of whether they harbour planets or not. We considered thepossibility that our selected samples are older than the average discpopulation.

Age consistency between exoplanet hosts and field stars