17–18 Jan 2024
Bologna, OAS
Europe/Rome timezone

A new golden age for the proper motion anomaly technique with Gaia-NIR

17 Jan 2024, 16:05
20m
Bologna, OAS

Bologna, OAS

Via Piero Gobetti, 93/3, 40129 Bologna BO

Speaker

Dr Domenico Barbato (INAF-OAPD)

Description

In the last couple of years, high contrast imaging observations are changing their focus from broad blind surveys (e.g. SHINE SPHERE-GTO; Desidera et al. 2021) to observations of pre-selected targets exploiting the presence of astrometric signatures such as the Gaia-Hipparcos Proper Motion Anomaly (PMA). This leads to an increase of detection efficiency by about an order of magnitude (Bonavita et al. 2022) and to detection of new benchmarks planetary companions such as AF Lep b (Mesa et al. 2023). Gaia NIR would allow to extend the PMA technique both in time baseline and sensitivity, allowing to greatly expand the completeness of our view of the outer parts of planetary systems.
Synergies with the direct imaging techniques will also be further enhanced by the instrumentation expected to be available at that time.

Primary author

Dr Domenico Barbato (INAF-OAPD)

Co-authors

Mr Alessandro Ruggieri (INAF-OAPD) Prof. Alice Zurlo (Univ. Diego Portales, Santiago, Chile) Dr Dino Mesa (INAF-OAPD) Dr Elisabetta Rigliaco (INAF-OAPD) Dr Mariangela Bonavita (Edinburgh, UK) Dr Raffaele Gratton (INAF-OAPD) Silvano Desidera (Istituto Nazionale di Astrofisica (INAF)) Dr Valentina D'Orazi (INAF-OAPD)

Presentation materials