JWST/MIRI detects [Ne V] 14.3 micron emission from O-star winds in 5 of 22 observed stars, enabling wind speed and mass-loss rate estimates even in weak-wind regimes.
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New interferometry revises gamma2 Velorum eccentricity to 0.322 and yields masses/radii that constrain evolutionary tracks but confirm the mass-discrepancy problem.
citing papers explorer
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Stellar winds of O-type stars traced by high ionization fine-structure emission lines with JWST/MIRI
JWST/MIRI detects [Ne V] 14.3 micron emission from O-star winds in 5 of 22 observed stars, enabling wind speed and mass-loss rate estimates even in weak-wind regimes.
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Revised orbital parameters of the gamma2 Velorum system
New interferometry revises gamma2 Velorum eccentricity to 0.322 and yields masses/radii that constrain evolutionary tracks but confirm the mass-discrepancy problem.