Table 7
Radii of the stars and roche lobe parameters.
| i = 90° | |||||||||
|
|
|||||||||
| Star | ap (AU) | aap (AU) | m2 (M⊙) | R (R⊙) | RRLp (R⊙) | RRLap (R⊙) | RRGB/AGB (R⊙) | f | |
|
|
|||||||||
| DY Ori | 2.0 | 3.0 | 0.7 | 40 | 156 | 238 | 100 | 0.4−0.6 | |
| EP Lyr | 0.9 | 3.8 | 0.7 | 36 | 74 | 297 | 112 | 0.4−1.5 | |
| HP Lyr | 2.5 | 3.5 | 0.5 | 60 | 214 | 302 | 170 | 0.6−0.8 | |
| IRAS 17038 | 1.2 | 4.3 | 0.8 | 73 | 91 | 331 | 149 | 0.5−1.6 | |
| IRAS 09144 | 1.9 | 4.9 | 1.2 | 58 | 129 | 340 | 144 | 0.4−1.1 | |
| TW Cam | 1.3 | 1.9 | 0.7 | 83 | 102 | 153 | 149 | 1.0−1.5 | |
|
|
|||||||||
| i = 60° | |||||||||
|
|
|||||||||
| DY Ori | 1.8 | 2.7 | 0.9 | 40 | 132 | 203 | 100 | 0.5−0.8 | |
| EP Lyr | 0.8 | 3.4 | 0.9 | 36 | 63 | 253 | 112 | 0.4−1.8 | |
| HP Lyr | 2.2 | 3.1 | 0.6 | 60 | 181 | 255 | 170 | 0.7−0.9 | |
| IRAS 17038 | 1.1 | 3.9 | 1.0 | 73 | 77 | 281 | 149 | 0.5−1.9 | |
| IRAS 09144 | 1.7 | 4.5 | 1.6 | 58 | 109 | 289 | 144 | 0.5−1.3 | |
| TW Cam | 1.2 | 1.7 | 0.8 | 83 | 87 | 131 | 149 | 1.1−1.7 | |
Notes. The orbital separation at periastron and apastron passage is shown in Cols. 2 and 3, respectively for two different inclinations of 90° and 60°. In Col. 4 we show the estimated masses of the companion assuming a primary mass of 0.6 M⊙. Column 5 is the current radius of the primary derived from the effective temperature and luminosity. Columns 6 and 7 display the radius of the Roche lobe at periastron and apastron, respectively. Column 8 outlines the estimated radius of the star on the RGB/AGB, assuming an effective temperature of TRGB/AGB ~ 3500 K. We show the Roche lobe filling factors at apastron-periastron (f = RAGB/RRL or f = RRGB/RRL) in the last column.
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