Postdoctoral researcher in the Department of Astronomy at the University of Michigan.

Email: percal@umich.edu

Research interests and highlights

Astrometric monitoring of a low-mass stellar binary system

Characterisation of benchmark Mdwarfs

Much of my previous research have involved the characterisation of low-mass M type stars to better understand their fundamental properties such as age, luminosity and mass.

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Detection and characterisation of substellar objects

By employing state-of-the-art facilities to observe very faint objects I studied low-mass substellar objects to search for binarity and companions, discovering several brown dwarf binary candidates.

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JWST/NIRCam detection of the Y+Y dwarf binary W0336AB system from Calissendorff et al. (2023).
The left panel shows the unresolved system, with residuals after performing single- and double empirical PSF fittings
shown in the middle panels, highlighting the significantly-improved fit for the combined flux of the components when
accounting for the binary nature of the system. The right panel accentuates the companion, after subtracting only
the primary component from the best-fit binary solution. The x− and y axes depict separation in pixels, each
corresponding to 63 mas.
JWST/NIRCam detection of the Y+Y dwarf binary W0336AB system from Calissendorff et al. (2023). The left panel shows the unresolved system, with residuals after performing single- and double empirical PSF fittings shown in the middle panels, highlighting the significantly-improved fit for the combined flux of the components when accounting for the binary nature of the system. The right panel accentuates the companion, after subtracting only the primary component from the best-fit binary solution. The x− and y axes depict separation in pixels, each corresponding to 63 mas.