Adam Rains
@spectraltypos.bsky.social
To step back, what do we observe? A spectrum has 3 parts: star, telluric (Earth's atmosphere), and planet. The first two dominate the signal, and all three have different Doppler shifts.
Space-based observations don't have tellurics ✅, but aren't high-res enough to resolve these Doppler shifts ❌.
Space-based observations don't have tellurics ✅, but aren't high-res enough to resolve these Doppler shifts ❌.
September 17, 2025 at 3:05 PM
To step back, what do we observe? A spectrum has 3 parts: star, telluric (Earth's atmosphere), and planet. The first two dominate the signal, and all three have different Doppler shifts.
Space-based observations don't have tellurics ✅, but aren't high-res enough to resolve these Doppler shifts ❌.
Space-based observations don't have tellurics ✅, but aren't high-res enough to resolve these Doppler shifts ❌.
Hi astro bluesky—it's paper day!
I dove into optical M/K dwarf spectra—rife with molecules as they are—& found success with a data-driven 🌈 model (i.e. ML) vs physical models.
1) 🟦🌈 recovery 😌
2) 🟥🌈 recovery 😌
3) Physical model vs ML 🙃
arxiv.org/abs/2402.14639 🔭
February 23, 2024 at 3:56 PM
Hi astro bluesky—it's paper day!
I dove into optical M/K dwarf spectra—rife with molecules as they are—& found success with a data-driven 🌈 model (i.e. ML) vs physical models.
1) 🟦🌈 recovery 😌
2) 🟥🌈 recovery 😌
3) Physical model vs ML 🙃
arxiv.org/abs/2402.14639 🔭