exoplanets
All posts tagged exoplanets
Among different fields of science, astronomy has a unique history of citizen science projects. In the last few decades, the advent of user-friendly software and web infrastructure, as well as off-the-shelf research-grade instrumentation, has led to a golden age of citizen science astronomy. Opportunities for amateurs to contribute meaningfully to astronomical research have never been more plentiful.
Continue ReadingFrom https://webbtelescope.org/resource-gallery/articles. (This is a slightly updated reprint of an article originally run Nov 2021.)
NASA’s James Webb Space Telescope (JWST), scheduled to launch on December 18, will primarily use its spectrographs – specialized instruments that capture and spread out light like a rainbow – to study exoplanets. By analyzing this data, known as spectra, researchers will be able to measure exoplanets’ compositions and chemistries. Spectra will help refine what we know about any exoplanet Webb observes, including massive gas giants, mid-sized ice giants, and smaller rocky exoplanets (some of which could be similar to Earth). In a few cases, JWST will deliver images of exoplanets to reveal more about them.
Continue Reading
Evidence of Long-term Period Variations in the Exoplanet Transit Database (ETD)
https://iopscience.iop.org/article/10.3847/1538-3881/ac959a
able 4. Model Comparison for Secondary Analysis—Data Variance for ETD Transit Times
| Target | Decay Rate | 1σ Unc. | BIClinear | BICdecay | ΔBIC |
|---|---|---|---|---|---|
| (ms yr−1) | (ms yr−1) | ||||
| WASP-12 b | −34.8 | 4.9 | 223.7 | 202.7 | −21.0 |
| HAT-P-19 b | −64 | 17 | 80.6 | 78.2 | −2.4 |
| TrES-1 b | −16.0 | 3.7 | 73.3 | 68.3 | −5.0 |
| WASP-4 b | −6.7 | 2.4 | 62.6 | 62.7 | 0.1 |
| TrES-2 b | −22.0 | 8.0 | 159.0 | 160.3 | 1.3 |
| TrES-5 b | −25 | 11 | 118.3 | 120.5 | 2.2 |
| HAT-P-32 b | −32 | 12 | 95.5 | 96.7 | 1.2 |
| WASP-10 b | −10.1 | 7.6 | 131.6 | 135.5 | 3.9 |
| WASP-43 b | 3.5 | 4.0 | 126.5 | 130.9 | 4.4 |
| TrES-3 b | 0.01 | 1.9 | 227.8 | 233.1 | 5.3 |