„Neun Weise“ für Macrons Reform

In #Frankreich erklärt der #Verfassungsrat die #Rentenreform für rechtens. Rechts­ex­per­ten kri­ti­sie­ren die Ent­schei­dung, die #Gewerkschaften rufen weiter zu #Protest auf

Aus Paris Rudolf #Balmer
https://www.taz.de/!5925874

If we compare the absorption lines in our #Alphecca spectrum to the absorption lines of the known star types, it can be seen that our star is a "Class A" star, a "white to blue white" star. In this star class, #Balmer lines are the most prominent, so they can easily identified.

Did you see the small lines in the spectrum to the right? Those are absorption lines (they are called #Balmer lines, a set of absorption lines caused by interaction of the starlight with #hydrogen atoms in its atmosphere)! When properly plotted, these absorption lines are shown as "dips" in the spectrum curve below. The exact location and how "deep" these dips are, and the overall shape of the curve help me determine which star type #Alphecca is.