Spectral analysis of HD 49798, a bright, hydrogen-deficient sdO-type donor star in an accreting X-ray binary

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Table 3

Determined stellar parameters, compared to previously determined values by Gaia, Krtička et al. (2019, K) and Kudritzki & Simon (1978, KS).

	HD	49798	Gaia	K	KS
d/pc	496^a	$_{- 83}^{+ 82}$ ${}_{-83}^{+82}$	521^b ± 14	508^a ± 17	650^a ± 100
L/L_☉	4360	$_{- 456}^{+ 509}$ ${}_{-456}^{+509}$		4400 ± 400	7943 ± 2743
M/M_☉	1.14	$_{- 0.24}^{+ 0.30}$ ${}_{-0.24}^{+0.30}$		1.46 ± 0.32	1.75 ± 1.0
R/R_☉	$1 . 09_{- 0.10}^{+ 0.11}$ $1.09_{-0.10}^{+0.11}$			1.05 ± 0.06	1.45 ± 0.25

Notes. ^(a) Spectroscopic distance, ^(b) trigonometric (parallax) distance.

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