Resolving the terrestrial planet-forming region of HD 172555 with ALMA - I. Post-impact dust distribution

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Table 2

Results from MCMC modeling.

Free parameter	Gaussian model	Power law model
$F_{v_{}}^{lower} (mJy)$ $F_{{v_ }}^{{\rm{lower}}}({\rm{mJy}})$	${0.10}_{- 0.03}^{+ 0.03}$ $0.10_{ - 0.03}^{ + 0.03}$	${0.12}_{- 0.02}^{+ 0.02}$ $0.12_{ - 0.02}^{ + 0.02}$
$F_{v_{}}^{higher} (mJy)$ $F_{{v_ }}^{{\rm{higher}}}({\rm{mJy}})$	${0.08}_{- 0.03}^{+ 0.02}$ $0.08_{ - 0.03}^{ + 0.02}$	${0.26}_{- 0.08}^{+ 0.09}$ $0.26_{ - 0.08}^{ + 0.09}$
$F_{v_{d}}^{lower} (mJy)$ $F_{{v_{\rm{d}}}}^{{\rm{lower}}}({\rm{mJy}})$	${0.26}_{- 0.08}^{+ 0.09}$ $0.26_{ - 0.08}^{ + 0.09}$	${0.19}_{- 0.06}^{+ 0.06}$ $0.19_{ - 0.06}^{ + 0.06}$
$F_{v_{d}}^{higher} (mJy)$ $F_{{v_{\rm{d}}}}^{{\rm{higher}}}({\rm{mJy}})$	${0.18}_{- 0.08}^{+ 0.08}$ $0.18_{ - 0.08}^{ + 0.08}$	${0.13}_{- 0.06}^{+ 0.06}$ $0.13_{ - 0.06}^{ + 0.06}$
∆RA (mas)	${5.5}_{- 6.1}^{+ 6.2}$ $5.5_{ - 6.1}^{ + 6.2}$	${5.6}_{- 6.1}^{+ 5.9}$ $5.6_{ - 6.1}^{ + 5.9}$
∆Dec (mas)	${6.3}_{- 5.7}^{+ 5.8}$ $6.3_{ - 5.7}^{ + 5.8}$	${6.9}_{- 5.5}^{+ 5.8}$ $6.9_{ - 5.5}^{ + 5.8}$
PA (^◦)	${121.5}_{- 18.7}^{+ 23.1}$ $121.5_{ - 18.7}^{ + 23.1}$	${123.3}_{- 14.7}^{+ 25.0}$ $123.3_{ - 14.7}^{ + 25.0}$
i (^◦)	${71.5}_{- 6.4}^{+ 6.3}$ $71.5_{ - 6.4}^{ + 6.3}$	${71.9}_{- 6.6}^{+ 6.8}$ $71.9_{ - 6.6}^{ + 6.8}$
R (au)	${4.7}_{- 2.4}^{+ 2.8}$ $4.7_{ - 2.4}^{ + 2.8}$	–
∆R (au)	${12.9}_{- 5.7}^{+ 4.8}$ $12.9_{ - 5.7}^{ + 4.8}$	–
R_in (au)	–	${4.7}_{- 2.1}^{+ 0.3}$ $4.7_{ - 2.1}^{ + 0.3}$
R_out (au)	–	${7.1}_{- 1.7}^{+ 3.3}$ $7.1_{ - 1.7}^{ + 3.3}$
P	–	${0.0}_{- 5.1}^{+ 7.9}$ $0.0_{ - 5.1}^{ + 7.9}$
f	${0.1437}_{- 0.0001}^{+ 0.0001}$ $0.1437_{ - 0.0001}^{ + 0.0001}$	${0.1437}_{- 0.0001}^{+ 0.0001}$ $0.1437_{ - 0.0001}^{ + 0.0001}$

Notes. Middle column: results from Gaussian model. Right column: results from power-law model. In both columns, the inclination, i, has a Gaussian prior applied (see Sect. 4.2).

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