About our new project on the yellow hypergiants (YHGs):
The YHGs are extremely massive and bright stars, which are located in the upper part of the HRD and develope bluewards. They pulsate between the spectral classes FGK and can suffer strong mass ejections at a temperature above 7000K. This 'bouncing against the Yellow Void' phenomenon is not well understood, yet. The question is whether the stars make the passage and continue to develop bluewards or they end in a supernova.
Our measurements started at the beginning of February 2018 and in mid-July we published the announcement of our campaign.
This blog is intended to inform campaign participants and interested people about our progress.
by Christoph Quandt