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About

John I. Bailey is an astronomer whose work bridges the design of cutting-edge observational instrumentation and the discovery of stellar phenomena. He is best known for leading the development of the Michigan/Magellan Fiber System (M2FS), a high-multiplexing fiber-fed double spectrograph for the Magellan/Clay telescope, described in his most-cited paper (2012, 67 citations). This instrument, capable of simultaneously observing 256 targets, has enabled large-scale spectroscopic surveys of stellar populations and Galactic structure, establishing Bailey as a key figure in astronomical instrumentation. Beyond hardware, Bailey has made notable contributions to stellar astrophysics, including the discovery of δ Scuti pulsations in the young hybrid debris disk star HD 156623 (2019, 12 citations). This work, conducted using data from the bRing robotic observatory network—originally built to search for circumplanetary material around β Pictoris b—demonstrates his ability to repurpose survey data for novel stellar variability studies. Bailey’s research thus spans from building the tools that power modern astronomy to uncovering the dynamic lives of stars, with his work cited over 80 times and continuing to influence both instrument builders and stellar astronomers.