Adam Rains
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spectraltypos.bsky.social
Adam Rains
@spectraltypos.bsky.social
astronomer & science communicator, 🇦🇺➡️🇸🇪➡️🇨🇱, he/him

https://adrains.github.io/
Paper day!

You're doing ground-based high-resolution exoplanet transmission spectroscopy and want to analyse the planet—not the star or Earth's atmosphere.

Is there a way to disentangle your spectrum *without* destroying the planet signal?

arxiv.org/abs/2509.12737

🧵⬇️

🔭 #exoplanets #astromethods
TSD: An inverse problem approach for recovering the exoplanetary atmosphere transmission spectrum from high-resolution spectroscopy
Our ability to observe, detect, and characterize exoplanetary atmospheres has grown by leaps and bounds over the last 20 years, aided largely by developments in astronomical instrumentation; improveme...
arxiv.org
September 17, 2025 at 3:05 PM
Reposted by Adam Rains
Do you love WASP-107 b? Do you love making use of *both* ground VLT + space JWST obs to detect molecules in a "warm" (Teq<800K) #exoplanet in transmission, even in a crazy confusing cloudy atmosphere?!

🚨 It's PAPER* DAY! Which means #scicomm thread!

🧵⬇️🔭🪐🧪

*pre-print!

arxiv.org/abs/2508.18964
VLT/CRIRES+ observations of warm Neptune WASP-107 b: Molecular detections and challenges in ground-based transmission spectroscopy of cooler and cloudy exoplanets
Atmospheres of transiting exoplanets can be studied spectroscopically using space-based or ground-based observations. Each has its own strengths and weaknesses, so there are benefits to both approache...
arxiv.org
August 27, 2025 at 10:38 AM


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