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- W2471015653 abstract "Aims. We study the X-ray emission of low-mass main-sequence stars to derive a reliable general scaling law between coronal temperature and the level of X-ray activity. Methods. We collect ROSAT measurements of hardness ratios and X-ray luminosities for a large sample of stars to derive which stellar X-ray emission parameter is most closely correlated with coronal temperature. We calculate average coronal temperatures for a sample of 24 low-mass main-sequence stars with measured emission measure distributions (EMDs) collected from the literature. These EMDs are based on high-resolution X-ray spectra measured by XMM-Newton and Chandra. Results. We confirm that there is one universal scaling relation between coronal average temperature and surface X-ray flux, FX ,t hat applies to all low-mass main-sequence stars. We find that coronal temperature is related to FX by ¯ Tcor = 0.11F 0.26 X ,w here¯ Tcor is in MK and FX is in erg s −1 cm −2 ." @default.
- W2471015653 created "2016-07-22" @default.
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- W2471015653 date "2015-01-01" @default.
- W2471015653 modified "2023-09-27" @default.
- W2471015653 title "The coronal temperatures of low-mass main-sequence stars (Research Note)" @default.
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- W2471015653 hasPublicationYear "2015" @default.
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