The vanishing of the long photometric cycle in AU Monocerotis

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Table 1.

Compilation of physical parameters of the AU Mon system from the literature.

	Sahade et al.,	Vivekananda Rao & Sarma,	Desmet et al.,	Djurašević et al.,	Atwood-Stone et al.,
	(1997)	(1998)	(2010)	(2010)	(2012)
M_h [M_⊙]	6.1 ± 0.61	5.93 ± 0.31	6.37 $_{- 1.12}^{+ 2.18}$ $^{+2.18}_{-1.12}$	7.0 ± 0.3	7.0a
M_c [M_⊙]	1.8 ± 0.53	1.18 ± 0.16	1.17 ± 0.19	1.2 ± 0.2	1.2a
R_h [R_⊙]	–	5.28 ± 0.16	7.15 $_{- 2.92}^{+ 5.77}$ $^{+5.77}_{-2.92}$	5.1 ± 0.5	5.1a
R_c [R_⊙]	–	10.04 ± 0.74	9.7 ± 0.6	10.1 ± 0.5	10.1a
T_h [K]	–	15 500 ± 100a	15 000 ± 2000	15 890 ± 400	17 000
T_c [K]	–	6000 ± 40	5750 ± 250	5750	5750a
q	0.3 ± 0.09	0.1985a	0.17 ± 0.03	0.17 ± 0.03a	0.17a
P_o [d]	11.1130371a	11.1130371a	11.1130374	11.1130374a	11.1130374a
e	0.06 ± 0.02	0.0a	0.01 ± 0.03	0.0a	0.0a
i [deg]	–	78.74 ± 0.06°	78.6 ± 0.6°	80.1 ± 0.6°	80.1°a
r_disc [R_⊙]	–	–	–	12.7 ± 0.6	23 ± 2
T_disc [K]	–	–	–	15 870b	14 000 ± 2000b

^(a)

Notes. Assumed value.

^(b)

Refers to the disc inner radius.

Masses, radius, and temperature of the hot and cool components, the mass ratio of the system, its period, eccentricity and inclination, together with estimations of the accretion disc size and temperature, are provided.

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