Matthew Kenworthy

Sanghi+ on Efficiently Searching for Close-in Companions around Young M Dwarfs using a Multi-year PSF Library where using a super large RDI star atlas as your basis set gives better sensitivity within 0.4 arcseconds on Keck with a Vortex coronagraph for M star survey. #astrodon 🔭🪐

A plot of angular separation in arcseconds versus the difference in delta magnitude between RDI and ADI methods. If the delta is greater than zero, then RDI is the better method. The graph shows tha RDI is better for distances smaller than 0.4 arcseconds. An image of a star with a companion next to it, processed using the new method. The companion is to the lower right of the star, which is itself masked.