When a star is born, a protoplanetary disk made of gas and dust surrounds the star. The 1 disk can show gaps opened by different astrophysical mechanisms. The gap has a wall emitting 2 radiation which contributes to the spectral energy distribution (SED) of the whole system (star, disk 3 and planet) in the IR band. As these new-born stars are far away from us, its difficult to know 4 whether the gap is opened by a forming planet. I have developed RHADaMAnTe, a computational 5 astro code based on the geometry of the wall gap coming from hydrodynamical 3D simulations of 6 protoplanetary disks. With this code it is possible to make models of disks to estimate synthetic SEDs 7 of the wall gap and prove whether the gap was opened by a forming planet. I have implemented this 8 code to the stellar system LkCa 15. I found that a planet of 10 Jupiter masses is capable of opening a 9 gap with a curved wall with height of 12.9AU. However, the synthetic SED does not fit to Spitzer IRS 10 SED (ξ² ∼ 4.5) from 5µm to 35µm. This implies that there is an optically thick region inside the gap.