ARPS Exoplanet Division Webinar

Saturday 22nd Feb 2025 10:30 - 16:00

Variations on an Exoplanet Theme – Part 2

A webinar meeting of the Exoplanets Division of the Asteroids and Remote Planets section.

The Zoom webinar link is:
https://us02web.zoom.us/j/85294074026?pwd=3xxsy0JDVOkxkvh8IPnCBDeK7j930d.1

The meeting will also be live-streamed to the BAA YouTube channel.
https://www.youtube.com/@britishastronomical/streams

Attendees will be able to ask questions by the Q&A, Chat and YouTube chat.

Programme

10:30 – 11:00	Introduction to morning session and TTV recap – Roger Dymock
11:00 – 12:00	Analysis of TTVs using Exoplanetpie – Peter Vuylsteke Demo of a new software package for analysing Transit Timing Variations
12:00 – 12:45	Where have all the Tatooines gone? A geometrical perspective on the detection of exoplanets orbiting non-eclipsing binaries – Paul Dooley Exoplanets in orbit around binary stars (sometimes known as “Tatooines”) form a fascinating category of exoplanetary systems. To date, photometric detection of such exoplanets has concentrated on eclipsing binary systems. However, most binary systems do NOT eclipse, meaning that a significant number of potential Tatooines may be going undetected. Here we use simulation to review and illustrate the geometry and challenges in detection of exoplanets orbiting non-eclipsing binary systems.
12:45 – 13:45	Lunch break
13:45 – 14:00	Introduction to afternoon session – Rodney Buckland
14:00 – 14:30	Can 50 cm-class telescopes help reduce noise in data from space telescopes by modelling stellar variability using Lomb-Scargle techniques? – Daniel Barbos We show how ground-based 50-cm-class telescopes can be utilised to mitigate the noise caused by regular intrinsic variability in M- and K-type stars, thereby complementing space-based exoplanet observations and enhancing the quality of data in missions such as PLATO and Ariel.
14:30 – 15:00	Can 50 cm-class telescopes produce centre of transit estimates of sufficient quality to extend TTV datasets for inferring the presence of perturbing planets? – Ashokkumar Sundaramurthy There are many opportunities for ground-based telescopes to follow-up transit observations from space telescopes. Producing precise centre of transit timings to extend TTV sequences is one such opportunity for pro-am collaboration. Here we explore the concept of transforming samples of continuous time signals to periodograms for inferring the presence of perturbing planets.
15:00 – 15:30	The Kepler 88 exoplanetary system – Roger Dymock A demonstration of LCTools illustrating transit timing, duration and depth variations.
15:30 – 16:00	Q and A and close of mtg – Rodney Buckland and Roger Dymock