XMM - Newton First Observation in the Pleiades
نویسندگان
چکیده
We present the first results from a 40 ks Guaranteed Time XMM-Newton pointing in the Pleiades. We detect almost all early–mid dM members in the field and several very low mass (VLM) stars – including the brown dwarf (BD) candidate Roque 9 – and investigate the variation of X-ray activity levels, hardness ratios and flare frequency with spectral type down to the BD regime.
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