2021-03-21

a split in the main sequence?

I did some actual, real-live sciencing this weekend, which was a pleasure. I plotted a part of the lower-main sequence in ESA Gaia data where Hans-Walter Rix (MPIA) has found a bimodality that isn't previously known (as far as we can tell). I looked at whether the two different kinds of stars (on each side of the bimodality) are kinematically different and it doesn't seem like it. I sent the plots to some experts to ask for advice about interpretation; this is out of scope for both Rix and me!

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