Table B.3.
Donor star densities in BH LMXBs (marked in bold), compared to those of MS and Giants with same spectral type.
| Object | Porb | q | ⟨ρ⟩ | Spec Type a | ⟨ρMS⟩ b | ⟨ρGIANT⟩ c | References |
|---|---|---|---|---|---|---|---|
| (d) | (gr cm−3) | (gr cm−3) | (gr cm−3) | for q | |||
| GRS 1915+105 | 33.85 | 0.042(24) | 2×10−4 | K1-5 | 2.4-2.9 | 1-4×10−4 | (1) |
| V404 Cyg | 6.471 | 0.067(5) | 5×10−3 | G8-K4 | 1.7-2.8 | 1-9×10−4 | (2) |
| BW Cir | 2.544 | 0.12(3) | 0.03 | G0-5 | 1.1-1.5 | 1-6×10−3 | (3) |
| GX 339-4 | 1.759 | 0.18(5) | 0.06 | K1-2 | 2.4 | 3-4×10−4 | (4) |
| XTE J1550-564 | 1.542 | 0.033(8) | 0.08 | K2-4 | 2.4-2.8 | 1-3×10−4 | (5) |
| MAXI J1820+070 | 0.685 | 0.072(12) | 0.41 | K3-5 | 2.6-2.9 | 1-2×10−4 | (6) |
| N Oph 77 | 0.523 | 0.014(16) | 0.65 | K1-5 | 2.4-2.9 | 1-4×10−4 | (7) |
| N Mus 91 | 0.433 | 0.079(7) | 1.03 | K0-6 | 2.3-3.3 | 1-4×10−4 | (8) |
| MAXI J1305-704 | 0.394 | 0.05(2) | 1.22 | K3-5 | 2.6-2.9 | 1-2×10−4 | (9) |
| GS 2000+25 | 0.344 | 0.042(12) | 1.58 | K3-7 | 2.6-3.6 | 0.7-2×10−4 | (10) |
| A 0620-00 | 0.323 | 0.067(10) | 1.83 | K0-7 | 2.3-3.6 | 0.7-4×10−4 | (11) |
| XTE J1650-500 | 0.321 | 0.03(3) | 1.80 | K1-7 | 2.4-3.6 | 0.7-4×10−4 | (12) |
| N Vel 93 | 0.285 | 0.055(10) | 2.33 | K0-M0 | 2.3-4.0 | 0.3-4×10−4 | (13) |
| XTE J1859+226 | 0.276 | 0.07(1) | 2.52 | K5-7 | 2.9-3.6 | 0.7-1×10−4 | (14) |
| GRO J0422+32 | 0.212 | 0.12(8) | 4.35 | M0-5 | 4.0-30 | ≲3×10−5 | (15) |
| XTE J1118+480 | 0.170 | 0.024(9) | 6.32 | K5-M1 | 2.9-5.6 | 0.3-1×10−4 | (16) |
| SWIFT J1753.5-0127 | 0.136 | 0.027(3) | 9.96 | M4-5 | 16-30 | ≲3×10−5 | (17) |
Notes. (a) Widest spectral range given by Table B.1. (b) MS densities derived from the compilation of masses and radii of Pecaut & Mamajek (2013). (c) Giant densities from Drilling & Landolt (2002).
References. (1) Steeghs et al. (2013); (2) Casares (1996); (3) Casares et al. (2009); (4) Heida et al. (2017); (5) Orosz et al. (2011); (6) Torres et al. (2020); (7) Harlaftis et al. (1997); (8) Wu et al. (2015); (9) Mata Sánchez et al. (2021); (10) Harlaftis et al. (1996); (11) Marsh et al. (1994); (12) Casares (1996); (13) Macias et al. (2011); (14) Yanes-Rizo et al. (2022); (15) Harlaftis et al. (1999); (16) González Hernández et al. (2014); (17) Yanes-Rizo et al. (2025).
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