Imaging low-mass planets within the habitable zone of α Centauri.

Giant exoplanets on wide orbits have been directly imaged around young stars. If the thermal background in the mid-infrared can be mitigated, then exoplanets with lower masses can also be imaged. Here we present a ground-based mid-infrared observing approach that enables imaging low-mass temperate exoplanets around nearby stars, and in particular within the closest stellar system, α Centauri. Based on 75-80% of the best quality images from 100 h of cumulative observations, we demonstrate sensitivity to warm sub-Neptune-sized planets throughout much of the habitable zone of α Centauri A. This is an order of magnitude more sensitive than state-of-the-art exoplanet imaging mass detection limits. We also discuss a possible exoplanet or exozodiacal disk detection around α Centauri A. However, an instrumental artifact of unknown origin cannot be ruled out. These results demonstrate the feasibility of imaging rocky habitable-zone exoplanets with current and upcoming telescopes.

Performance and image enhancing drug interventions aimed at increasing knowledge among healthcare professionals (HCP): reflections on the implementation of the Dopinglinkki e-module in Europe and Australia in the HCP workforce.

BACKGROUND: Healthcare professionals (HCPs) provide an important point of contact through which people who use performance and image enhancing drugs (PIEDs) could access reliable information, advice, and interventions on a range of PIEDs, their use and related harms. However, HCPs often report difficulties engaging and building rapport with people who use PIEDs, and research suggests that they often lack specialist knowledge on these substances. Providing credible evidence-based resources to support HCPs is thus important. However, educational materials in this area are generally absent and the ones that exist have not been assessed for their utility in the HCP workforce. This paper examines the acceptability and usability of a PIED e-learning module (the Dopinglinkki e-module) targeted at HCPs in three EU Member States and Australia. METHODS: A standardised two stage, mixed methodology was implemented. Stage 1 involved HCPs completing the e-module and completing an online survey (N = 77). Stage 2 involved conducting individual structured interviews with a subset of survey respondents (N = 37). Normalisation Process Theory and the Theoretical Framework of Acceptability were used as conceptual lenses. FINDINGS: The e-module provided information that was perceived as useful for HCPs' current and future practice. However, several individual, organisational and societal level barriers were reported as preventing the e-module becoming an accepted and normalised aspect of the HCP workforce, including the need for up to date evidence, the time-consuming nature of completing the e-module, lack of organisational support, the use of over-complex language, and the module's potential to reinforce the stigmatisation of PIEDs. CONCLUSION: Providing credible evidence-based resources to support HCPs' knowledge development is important. Evidence-based and theory informed interventions are needed to equip HCPs with knowledge that can aid culturally sensitive interactions and effective engagement with people who use PIEDs. Reflecting on our study findings, it is important that the development of interventions should include the voices of both HCP and those using PIEDs, and that careful consideration is given to the various factors that may act as a barrier to effective implementation.