Table 2
Photometric data for EF Aqr and the comparison stars.
| Object | Spec. type | Ref. | V | σ | b − y | σ | m 1 | σ | c 1 | σ | N(uvby) | β | σ | N(β) |
|
|
||||||||||||||
| EF Aqr | G0a | V11 | 9.885 | 9 | 0.382 | 5 | 0.191 | 8 | 0.374 | 10 | 280 | 2.621 | 9 | 8 |
| V11 | 10.092 | 9 | 0.356 | 4 | 0.178 | 6 | 0.386 | 11 | 22 | |||||
|
|
||||||||||||||
| HD 217376 | F3 IVb | V11 | 6.807 | 5 | 0.288 | 4 | 0.149 | 7 | 0.478 | 6 | 192 | 2.648 | 7 | 4 |
| O83 | 6.805 | 6 | 0.292 | 4 | 0.141 | 6 | 0.472 | 6 | 1 | |||||
| O94 | 6.810 | 4 | 0.289 | 3 | 0.141 | 4 | 0.480 | 5 | 1 | 2.645 | 6 | 1 | ||
|
|
||||||||||||||
| HD 217877 | G2 Vb | V11 | 6.704 | 4 | 0.371 | 4 | 0.174 | 7 | 0.346 | 7 | 215 | 2.608 | 8 | 4 |
| =HR8772 | P69 | 6.65 | 0.364 | 0.181 | 0.319 | 2 | ||||||||
| GO76 | 6.702 | 6 | 0.367 | 4 | 0.175 | 6 | 0.350 | 22 | 3 | |||||
| GO77 | 2.601 | 8 | 5 | |||||||||||
| AJ85 | 2.602 | 2 | 11 | |||||||||||
|
|
||||||||||||||
| HD 218730 | G1/2 Vb | V11 | 7.333 | 5 | 0.385 | 5 | 0.198 | 7 | 0.361 | 8 | 180 | 2.608 | 7 | 4 |
| O83 | 7.334 | 6 | 0.376 | 4 | 0.207 | 6 | 0.346 | 6 | 1 | |||||
| O94 | 7.331 | 4 | 0.384 | 3 | 0.195 | 4 | 0.357 | 5 | 1 | |||||
Notes. For EF Aqr, the uvbyβ information by V11 is the mean value near phases 0.25 and 0.75 (first line), and at total secondary eclipse (second line). N is the total number of observations used to form the mean values, and σ is the rms error (per observation) in mmag.
References. AJ85 = Andersen & Jensen (1985); GO76 = Grønbech & Olsen (1976); GO77 = Grønbech & Olsen (1977); O83 = Olsen (1983); O94 = (uvby): Olsen (1994), (β): Olsen unpublished; P69 = Perry (1969); V11 = this paper.
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