Coronal temperature as an age indicator

Hwankyung Sung*, M. S. Bessell, Hugues Sana

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)


    The X-ray spectra of late type stars can generally be well fitted by a two temperature component model of the corona. We find that the temperatures of both components are strong functions of stellar age, although the temperature of the hotter plasma in the corona shows a larger scatter and is probably affected by the activity of stars, such as flares. We confirm the power-law decay of the temperature of the hot plasma, but the temperature of the cool plasma component decays linearly with log(age).

    Original languageEnglish
    Pages (from-to)1-6
    Number of pages6
    JournalJournal of the Korean Astronomical Society
    Issue number1
    Publication statusPublished - 2008


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