Orbital and physical parameters of eclipsing binaries from the All-Sky Automated Survey catalogue - II. Two spotted M < 1 M⊙ systems at different evolutionary stages

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Volume 526 (February 2011)

A&A, 526 (2011) A29

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Table 3

Absolute physical parameters of ASAS-04.

ASAS-04	Primary		Secondary
parameter	value	±	value	±

inclination [ °]	84.60 ± 0.03
a [R_⊙]	3.430	0.008	3.454	0.008
Mass [M_⊙]	0.8338	0.0036	0.8280	0.0040
Omega-potential	9.130	0.025	9.202	0.026
Radius [R_⊙]	0.848	0.005	0.833	0.005
log g	4.503	0.005	4.515	0.005
v_syn [km s^-1]	26.43	0.15	25.95	0.15
V − I [mag]	0.830	0.135	0.894	0.150
Parameters of spots:
Longitude [rad]	3.14	0.04	2.77	0.04
Latitude [rad]	0.85	0.06	1.0	0.1
Radius [rad]	0.71	0.02	0.72	0.02
% of surface	12.1	0.4	12.4	0.7
Temperat. fraction	0.975	0.002	0.967	0.002
Including spots:
Effect. temperat. [K]	5324	200	5105	200
M_bol [mag]	5.46	0.16	5.68	0.17
M_V [mag]	5.64	0.23	5.92	0.25
distance [pc]	148 ± 5
Spots rectified:
Photosph. temperat. [K]	5340	200	5125	200
Temperature ratio	0.960 ± 0.004^a
Luminosity [log(L_⊙)]	–0.278	0.065	–0.365	0.068
M_bol [mag]	5.45	0.16	5.66	0.17
M_V [mag]	5.62	0.22	5.90	0.24

Notes.

^(a)

The temperature ratio’s uncertainty does not include the uncertainty in the absolute photometric calibration because it is dependent on the eclipse depths related only to the relative photometry.

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