3 Three reasons why Kepler’s discoveries will continue for a decade A talk presented by Geert Barentsen (Kepler GO Director) at the Wetton Workshop in Oxford on June 19th, 2018.
Atmospheric erosion is a function of incident flux High-precision planet radii obtained via asteroseismology reveal a slope in the planet radius bimodality. Van Eylen+ 2017
The number of planets discovered across open clusters is starting to constrain the timescales of inward planet migration. Rizzuto+ in prep Also: Mann+ 2017 1 10 100 1000 Age (Myr) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 Relative Planet Occurence (P < 20 d) Migration? Kepler Upper Scorpius Pleiades Hyades & Praesepe Close-in planets appear to be less common around young stars
Also: Rebull+ 2016a,b, 2017, Somers+ 2017, Barnes+ 2016, Stauffer+ 2016, Nardiello+ 2015, and others. Late M-dwarfs spin down in a radically different way
Model prediction: Matt et al. (2015), 653 Myr Late M-dwarfs spin down in a radically different way Also: Rebull+ 2016a,b, 2017, Somers+ 2017, Barnes+ 2016, Stauffer+ 2016, Nardiello+ 2015, and others.
1. The data analysis methods continue to improve. 2. Our computational capabilities are growing faster than the data set. 3. The field is increasingly valuing community software and tutorials.
Electronic “rolling band” noise limits Kepler’s sensitivity, but progress is being made towards modeling the varying background, e.g. using 2D Gaussian Processes.
Hedges+ in prep Our ability to model Kepler’s background systematics is improving
The intra-pixel response function of Kepler’s CCDs is being measured to an unprecedented precision A new measurement apparatus was designed which uses small spots of light across a range of wavelengths.
Vorobiev+ in prep This opens the door towards high-precision PSF-fitting photometry with Kepler.
Our understanding of data caveats, and the tools to identify them, are improving Video show the negative crosstalk signal produced by a bright asteroid on a different CCD channel.
Identification of 92 dipper stars using a Random Forest Classifier Careful feature engineering allows a classifier to provide a complete and unbiased census of stars showing occultations by accretion columns. Hedges+ 2018
The number of pixels telemetered by NASA’s exoplanet surveys doubles every 28 months Also: MOST, CoRoT, Plato, Cheops, Ariel, and others. Assumptions detailed at https://github.com/barentsen/tech-progress-data
Ground-based optical surveys show a pixel rate which doubles every 44 months Caveat: radio astronomers are significantly worse off. Assumptions detailed at https://github.com/barentsen/tech-progress-data
The speed of the world’s fastest supercomputer doubles every 13 months The speed of research internet backbones doubles every 16 months Data sources detailed at https://github.com/barentsen/tech-progress-data
The cost of storage halves every 28 months Storage bus speeds double every 35 months Data sources detailed at https://github.com/barentsen/tech-progress-data
We benefit from treating the public as our peers In 2017, students from the Thacher School in California obtained 20k observations over 135 nights; finding that the dips are chromatic.
Important ongoing conversations: - how to credit the authors of open software & data? - how to provide robust careers and funding opportunities to support scientists? - how to address the stress related to the fear of “getting scooped” in the era of openness.
3 I feel excited about the future of our field, because of: 1. new data analysis methods; 2. our computational capabilities; 3. community software and tutorials.
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