High Accuracy Radial Velocity Planet Searcher (HARPS) tagged posts

The boiling new world, which zips around its star at ultraclose range, is among the lightest exoplanets found to date. The TESS mission has discovered an ultra-short-period planet (USP) that is also super light. The planet is named GJ 367 b, and it orbits its star in just eight hours. The planet is about the size of Mars, and half as massive as the Earth, making it one of the lightest planets discovered to date.

Ultra-short-period planets are small, compact worlds that whip around their stars at close range, completing an orbit — and a single, scorching year — in less than 24 hours...

Three OU astronomers today announced groundbreaking discoveries allowing scientists to understand planets outside the solar system. Professor Carole Haswell, Dr. Daniel Staab and Dr. John Barnes discovered three, new, nearby planetary systems. Research led by Professor Haswell found the exoplanets—planets outside the solar system—as part of the Dispersed Matter Planet Project (DMPP).

The project was funded by the UK Science and Technology Facilities Council and includes an international team of researchers. The project team used the High Accuracy Radial Velocity Planet Searcher (HARPS), a high-precision planet-finding spectrograph, on the European Southern Observatory’s 3...

Phase-folded K2 light curve of EPIC 228735255 (black points) with best-fit model plotted as a solid red line. Top panel: Full phase light curve with the transit of EPIC 228735255b. There are no other significant dips indicating any other transits. Middle panel: Zoom-in of the transit of EPIC 228735255b and the resulting residuals from it and the model fit. Bottom panel: Zoom-in around phase 0.5. There is no indication of an observable secondary eclipse. Credit: Giles et al., 2017.

An international team has identified a new extrasolar planet from the data provided by Kepler spacecraft’s prolonged mission known as K2. EPIC 228735255b, is a “hot Jupiter” on an eccentric orbit around its parent star...