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Sullivan post-doctoral fellow Caleb Choban shared his research on dust in the early universe at the Evolution of Dust and Gas through Cosmic Time conference in Hiroshima earlier in December.  Caleb highlighted how reliable dust evolution models are needed to interpret ALMA and future JWST observations of dusty, star-forming galaxies (DSFGs) in the early universe at z<5.  Caleb described a suite of cosmological zoom-in simulations of moderately massive, high-redshift galaxies that incorporate a dust evolution model he developed. His model accounts for the dominant sources of dust production, growth, and destruction and follows the evolution of specific dust species, allowing the model to replicate a wide range of present-day observations.

Laurin Gray

IU astronomy Ph.D. student Laurin Gray and IU Professor Katherine Rhode, along with their collaborators, have recently published a study of rotation velocities in young, low-mass stars in the open star cluster NGC 2264.  These stars will one day grow up to be similar to our own Sun, but right now they're only 3 million years old- practically newborns by stellar timescales!  By studying stars in the early stages of their evolution, we can learn more about the processes that helped form our Solar System billions of years ago. 

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IU undergraduate Robbie Mailliard, who spent the summer at the NASA Marshall Space Flight Center and the University of Alabama at Huntsville as an REU student, attended this fall’s meeting of the American Geophysical Union in Washington, D. C., to present his research on the Sun.  The AGU draws some 25,000 geophysicists from more than 100 countries.

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