Updated 2025 February 7

BAA meetings

Variations on an Exoplanet Theme – Part 2, 2025 February 22, On-line webinar

Agenda

10:30 – 11:00 Introduction to morning session and TTV recap – Roger Dymock

11:00 – 12:00 Analysis of TTVs using Exoplanetpie – Peter Vuylsteke

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

Other organisations’ meetings

Know they star, know thy planet 2 conference, 2025 February 3-7. Caltech Caampus, Pasadena, Californaia, USA
Over the past seven years since the first conference, the limits of exoplanet discovery and the field of exoplanet characterization have changed dramatically, with great strides made in the community to understand and account for, at any even more precise and complex levels, the characteristics and effects of the stellar hosts

Exoclimes VII Montreal (Canada) from July 7 to 11, 2025.
Exoclimes VII conference will be organized by the Trottier Institute for Research in Exoplanets (https://exoplanetes.umontreal.ca/en/) and held in Montreal (Canada) from July 7 to 11, 2025. To maintain the collaborative spirit of Exoclimes, the number of participants will be limited to 200 Exoclimes is a conference series devoted to the atmosphere, climate, and evolution of sub-stellar bodies from solar system worlds to exoplanets and brown dwarfs.

Detection and Dynamics of Exoplanets (DDE): Interplay between theory and observations University of Coimbra, Portugal, 7 to 11 July 2025
Detecting and characterizing planets in multiple systems is not an easy task, because the traces of each body overlap, and the observations can be reproduced by different orbital configurations. Additionally, in many systems, planets are involved in mean motion resonances or resonant chains,