Table 4
Summary of our detection limits for each target.
| Target | Sep. | PA | Ref. | Mass | Radius | ΔHα |  |
LHα (L⊙) | Lacc (L⊙) | Ṁ (M⊙yr−1) |
|---|---|---|---|---|---|---|---|---|---|---|
| (mas) | (°) | (MJ) | (RJ) | (mag) | (erg s−1 cm−2) | |||||
| HD135344B | 180 | a | 10.2b | 1.6c | >9.8 | < 3.8 × 10−15 | < 2.0 × 10−6 | < 3.7 × 10−6 | < 2.4 × 10−12 | |
| TW Hya | 390 | d | 2e | 1.3c | >9.3 | < 1.9 × 10−14 | < 2.2 × 10−6 | < 3.5 × 10−6 | < 1.0 × 10−11 | |
| HD100546 | 480 ± 4 | 8.9 ± 0.9 | f | 15f | 2g | >11.4 | < 1.1 × 10−14 | < 4.7 × 10−6 | < 1.1 × 10−5 | < 6.4 × 10−12 |
| ~140 | ~133 | h | 15i | 2c | >9.3 | < 7.9 × 10−14 | < 3.3 × 10−5 | < 2.0 × 10−4 | < 1.1 × 10−10 | |
| HD169142 | ~340 | ~175 | j | 0.6j | 1.4c | >10.7 | < 5.7 × 10−15 | < 2.5 × 10−6 | < 4.3 × 10−6 | < 4.4 × 10−11 |
| 156 ± 32 | 7.4 ± 11.3 | k | 10k | 1.7c | >9.9 | < 1.2 × 10−14 | < 5.2 × 10−6 | < 1.3 × 10−5 | < 7.6 × 10−11 | |
| MWC 758 | 111 ± 4 | 162 ± 5 | l | 5.5m | 1.7n | >9.4 | < 1.4 × 10−14 | < 1.2 × 10−5 | < 4.3 × 10−5 | < 5.5 × 10−11 |
Notes. While for HD100546, HD169142, and MWC 758 we consider the specific locations (separation and PA) of previously claimed companion candidates, we focused our analyses for HD135344B and TW Hya on separations related to disk gaps(hence no specific PA). Columns 5 and 6 give the mass and radius assumed for the accretion rate calculations, Col. 7 gives the contrast magnitude at the specific location and Cols. 8–11 report the values for the Hα line flux, Hα line luminosity, accretion luminosity, and mass accretion rate ignoring any possible dust around the companion.
References. (a) Andrews et al. (2011); (b Maire et al. (2017); (c) AMES-Cond (Allard et al. 2001; Baraffe et al. 2003); (d)Garufi et al. (2013); (e)Ruane et al. (2017); (f)Quanz et al. (2015); (g)Brittain et al. (2014); (h)Mendigutía et al. (2017); (j)Osorio et al. (2014); (k)Reggiani et al. (2014); (l)Reggiani et al. (2018); (m)Pinilla et al. (2015); (n)BT-Settl (Allard et al. 2012).
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