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 will be posted here in advance of the meeting.

The meeting will also be live-streamed to the BAA YouTube channel.

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