other photometric variability

characterizing magnetic stars and multiple stars

The pipeline I developed to find unique pulsating stars (see here) was also useful in finding and characterizing (a) multiple stellar systems, as well as (b) magnetic stars.

  • I worked with a large team of amateur astronomers/citizen scientists to analyze BU CMi, the tightest-known flat quadruple system. This was discovered both by my pipeline and independently by a group of visual surveyors. Given that it was bright enough to be observed from the ground by small telescopes, including KELT, we were able to calculate the system parameters--including apsidal precession--to unprecedented precision.
  • I used TESS to present the first-ever characterization of a magnetospheric star based solely on photometric variability. With follow-up observations to determine a magnetic field, we were able to show that TESS data is useful to study magnetically trapped material. The same analyses were extended to M dwarfs, a small fraction of which exhibit corotating clouds of trapped material (most recent paper).
  • I was heavily involved in the creation and curation of the first catalog of quadruple stars with TESS, as well as analyses of magnetic stars (Ap stars, and Wolf-Rayet stars).