2019-12-04

LFC calibration accuracy; stars form in lines?

Lily Zhao (Yale) and I got to the point that we can calibrate one laser-frequency-comb exposure on EXPRES with a calibration based on all the LFC exposures. We find that we predict the lines in each exposure to a mean (over all lines) of about 3 cm/s! If this holds up to cross-validation, I am happy!

In Stars & Exoplanets Meeting at Flatiron, many fun things happened. Zhao showed us temperature variations observed spectroscopically in Sun-like stars: Are these due to spots? And Marina Kounkel (WWU) showed us incredible visualizations of young stars, showing that they are very clustered in kinematics and age. She believes that they form in lines, and then the lines break up. Her interactive plots were amazing!

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