heliophsics Archives

The time evolution of the stellar spectra occulted by the planet as a function of orbital phase, in the wavelength range 5882–5902 Å, which includes the sodium doublet. The positions of the Na ilines are highlighted by vertical dotted lines. The horizontal white lines indicate the transit contacts, with solid white representing T1 and T4, and dashed gray representing T2 and T3 (from negative to positive values of phase). This map was constructed by subtracting the in-transit flux-weighted spectra from a reference out-of-transit spectrum. -- astro-ph.EP

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SOAPv4: A New Step Toward Modeling Stellar Signatures In Exoplanet Research

by Keith CowingOctober 22, 2025

We present and describe a new version of the spot oscillation and planet code, SOAPv4. Our aim is to demonstrate its capabilities in modeling stellar activity in the context of […]

heliophsics

SOAPv4: A New Step Toward Modeling Stellar Signatures In Exoplanet Research

Juice Astrobiology Mission To Fly Past Earth For Third Gravity Assist

Planetary Health Check 2026 Finds Mounting Pressures Across Earth’s Life Support Systems – Reports And Proceedings

Prebiotic Peptide Formation Triggered By Urea-rich Warm Little Ponds On Early Earth

Thyles Rupes Region Of Mars

Do Himalayan-style Mountains Lie Under The Antarctic ice: Implication For The Gondwana Supermountains, The Rise Of Oxygen And The Cambrian Explosion?