Constraining the circumbinary disc tilt in the KH 15D system

ABSTRACT KH 15D is a system that consists of young, eccentric binary, and circumbinary disc obscures the binary as precesses. We develop self-consistent model provides reasonable fit to photometric variability was observed in over past 60 yr. Our suggests has an inner edge rin ? 1 au, outer rout ? few misaligned relative stellar by ?5–16°, with more inclined than edge. The difference between inclinations (warp) longitude ascending nodes (twist) at edges are order ?10 ?15°, respectively. also provide constraints on other properties disc, such precession period surface density profile. work demonstrates power data constraining physical planet-forming discs.