Differential Emission Measure Determination of Collisionally Ionized Plasma: II. Application to Hot Stars

摘要: In a previous paper we have described technique to derive constraints on the differential emission measure (DEM) distribution, of temperature collisionally ionized hot plasmas from their X-ray line spectra. We apply this Chandra/HETG spectra all nine stars available us at time project was initiated. find that DEM distributions six seven O in our sample are very similar but theta Ori has an spectrum characterized by higher temperatures. The both B lower magnitudes than those and one, tau Sco, is temperatures other, beta Cru. These results confirm work which high been found for Sco taken as evidence channeling wind magnetic fields, existence related stars' youth. Our demonstrate utility method deriving information large samples