| discov_num |
notes |
refcode |
| BD-09 3055 |
SB1. Curvature seen in proper motion components from Hipparcos data, |
|
|
although period was unknown. Combined spectroscopic/astrometric |
|
|
solution, based on echelle spectra and Hipparcos intermediate |
|
|
data (abscissa residuals). Torres derives a parallax of 19.5 +/- |
Trr2006a |
|
1.8 mas (compared to Hipparcos value of 29.4 +/- 2.7 mas). An |
|
|
estimated primary mass of 0.73 +/- 0.05 Msunyield a mass of 0.88 +/- |
|
|
0.05 Msun for the secondary. |
|
| TOK 398 |
HIP 50796 is a single-lined and astrometric binary according to |
|
|
(Torres 2006), with period 570.98d (1.56yr), K1=20.76 km/s, e=0.611. |
Trr2006 |
|
The Hipparcos parallax corrected for binary motion is 20.6+/-1.9mas. |
|
|
The spectroscopic secondary companion is over-massive, most likely a |
|
|
close pair of M-dwarfs. If so, the new speckle companion at 1".66 with |
|
|
a period on the order of 500yr makes the system quadruple. The speckle |
|
|
companion might contribute to the IR excess found by Torres. The |
|
|
system is an X-ray source, and is possibly young. |
Tok2015c |
