Mid-infrared characterization of the planetary-mass companion ROXs 42B b

Sebastian Daemgen, Kamen Todorov, Jasmin Silva +10

We present new Keck/NIRC2 3$-$5 $\mu$m infrared photometry of the planetary-mass companion to ROXS 42B in $L^{\prime }$, and for the first time in Brackett-$\alpha$ (Br$\alpha$) and in $M_\mathrm…