Table 4
Estimated masses for components of tight Hyades binaries.
| Object | MJ (M⊙) | MH (M⊙) | MK (M⊙) | q | ||
|
|
||||||
| RM 49 A | 0.220 | 0.219 | 0.222 | |||
| RM 49 B | 0.191 | 0.192 | 0.196 | 0.87–0.88 | ||
| RM 132 A | 0.215 | 0.210 | 0.218 | |||
| RM 132 B | 0.210 | 0.205 | 0.211 | 0.97–0.98 | ||
| RM 346 A | 0.232 | 0.230 | 0.234 | |||
| RM 346 B | 0.187 | 0.189 | 0.192 | 0.81–0.82 | ||
| RM 221 A | 0.209 | 0.205 | 0.210 | |||
| RM 221 B | 0.208 | 0.204 | 0.209 | 0.99 | ||
| RM 126 A | 0.139 | 0.137 | 0.141 | |||
| RM 126 B | 0.138 | 0.136 | 0.140 | 0.99 | ||
| UKIDSS 2 A | 0.055 | |||||
| UKIDSS 2 B | 0.046 | 0.84 | ||||
| UKIDSS 5 A | 0.055 | 0.059 | 0.062 | |||
| UKIDSS 5 B | 0.030 | 0.037 | 0.043 | 0.55–0.69 | ||
| UKIDSS 9 A | 0.052 | 0.053 | ||||
| UKIDSS 9 B | 0.033 | 0.040 | 0.63–0.75 | |||
Notes.Masses are estimated by comparing each object’s brightness in a given filter with the 600 Myr-old BT-Settl isochrone (Allard et al. 2003; Allard 2009) using a distance modulus of 3.33 and assuming no foreground extinction. Boldfaced entries indicate mass ratios derived from the K band photometry of the individual components.
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