Astrophysical parameters of LS 437 and the nature of X0726–260

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Table 3.

Measured disk parameters and derived disk sizes for different emission lines.

Spectral line	$v_{peak}^{1, 2}$ $Mathematical equation: $ v_{\mathrm{peak}}^{1,2} $$	$v_{wings}^{1, 2}$ $Mathematical equation: $ v_{\mathrm{wings}}^{1,2} $$	R_out
	(km s⁻¹)	(km s⁻¹)	(R_*)
Mg II 4481 Å	155	233	9.4 ± 0.6
He I 4713 Å	132	294	12.9 ± 0.8
Hβ	120	367	15.6 ± 0.9
He I 5876 Å	126	251	14.2 ± 0.9
Si II 6347 Å	141	226	11.3 ± 0.7
Hα	82	611	33.4 ± 2.0
He I 7065 Å	118	221	16.1 ± 1.0

Notes. ¹Measured values are projected and should be divided by sin i to yield actual physical magnitudes. ²All velocity measurements have an error of ±3 km s⁻¹.

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