X-Ray Evolution of Young Stars: Early Dimming and Coronal Softening in Solar-mass Stars with Implications for Planetary Atmospheres

The Astrophysical Journal 2026 Open access

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Authors: Konstantin V. Getman, Eric D. Feigelson, Vladimir Airapetian, GORDON P. GARMIRE
DOI: 10.3847/1538-4357/ae2e00
Cited by: 0

Abstract

Abstract X-ray and ultraviolet (XUV) emission from young stars plays a critical role in shaping the evolution of planetary atmospheres and the conditions for habitability. To assess the long-term impact of high-energy stellar radiation, it is essential to empirically trace how X-ray luminosities and spectral hardness evolve during the first ≲1 Gyr, when atmospheric loss and chemical processing are most active. This study extends the X-ray activity–mass–age analysis of

Fields of Study & Subjects

Stellar planetary and galactic studies Astronomy and Astrophysical Research Educational Leadership and Practices

Publication details

Journal / source
The Astrophysical Journal
Volume
1001
Issue
2
Pages
133–133
Publication date
13 April 2026
Language
EN