High-precision ground-based photometry of exoplanets
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High-precision photometry technique for exoplanets; an astronomy methods and instrumentation contribution.
This studies exoplanet observation technology and photometry, not research practice.
Domain astronomy methods paper on exoplanet photometry instrumentation and observing practice.
Abstract
High-precision photometry of transiting exoplanet systems has contributed significantly to our understanding of the properties of their atmospheres. The best targets are the bright exoplanet systems, for which the high number of photons allow very high signal-to-noise ratios. Most of the current instruments are not optimised for these high-precision measurements, either they have a large read-out overhead to reduce the readnoise and/or their field-of-view is limited, preventing simultaneous observations of both the target and a reference star. Recently we have proposed a new wide-field imager for the Observatoir de Mont-Megantic optimised for these bright systems (PI: Jayawardhana). The instruments has a dual beam design and a field-of-view of 17' by 17'. The cameras have a read-out time of 2 seconds, significantly reducing read-out overheads. Over the past years we have obtained significant experience with how to reach the high precision required for the characterisation of exoplanet atmospheres. Based on our experience we provide the following advice:
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The record
- Venue
- EPJ Web of Conferences
- Topic
- Stellar, planetary, and galactic studies
- Field
- Physics and Astronomy
- Canadian institutions
- University of Toronto
- Funders
- —
- Keywords
- ExoplanetPhotometry (optics)PhysicsRemote sensingAstronomyComputer sciencePlanetStarsGeology
- Has abstract in OpenAlex
- yes