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astro-ph.EP2026
From Anoxic to Oxic Earth: Detectability of Atmospheric Biosignatures across Stellar Hosts with ELT/ANDES
Dwaipayan Dubey, Spandan Dash, Liton Majumdar
Earth's atmosphere evolved from an anoxic, methane-bearing Archean state through Proterozoic oxygenation to the O-rich modern atmosphere. However, most biosignature detectabili…
astro-ph.EP2026
Probing the Atmospheres of Young Long-Period Sub-Neptune Progenitors with ELT/ANDES
Spandan Dash, Dwaipayan Dubey, Liton Majumdar
High-resolution cross-correlation spectroscopy (HRCCS) has become a powerful ground-based technique for detecting and characterizing exoplanet atmospheres. While highly successful…