discov_num |
notes |
refcode |
STF 528 |
chi Tau = 59 Tau |
|
|
H 4 10. |
MEv2010 |
|
The secondary is SB2 (F8+G6), with period 17.6 days for Ba,Bb; RV |
|
|
residuals indicate the presence of a more distant Bc companion. Based |
|
|
on spectroscopic observations obtained at CfA 1988-2004, Torres (2006) |
|
|
derived an orbit for Bab,Bc with period 9.447 +/- 0.017 yr. Mass for |
|
|
the A component is determined to be 2.60 +/- 0.5 Msun. Inclination |
|
|
angle for the Ba,Bb orbit is 53.5 +/- 0.5deg, yielding masses 1.19 and |
|
|
1.02 Msun for Ba and Bb. Bc appears to be over-massive; based on |
|
|
infrared excess this could be well explained as an equal-mass binary |
|
|
composed of late-type stars of masses ~0.70 Msun (spectral type ~K4). |
|
|
Total mass of B is 3.6 Msun. Torres estimates the Bab,Bc semi-major |
|
|
axis at about 83.6 mas and the magnitude difference dV~3.3mag |
|
|
(dK~1.5mag), making the pair potentially resolvable by speckle |
|
|
interferometry. |
Trr2006b |
idgroup |
discov |
author |
1 |
ITO |
Itoh, Y., Tamura, M., & Nakajima, T. |
2 |
ITO |
Itoh, Y., Hayashi, M., Tamura, M., Tsuji, T., Oasa, Y., Fukagawa, M., |
2 |
ITO |
Hayashi, S.S., Naoi, T., Ishii, M., Mayama, S., Morino, J., Yamashita, T., et al. |
3 |
ITO |
Itoh, Y., Tamura, M., Hayashi, M., Oasa, Y., Hayashi, S.S., Fukagawa, M., |
3 |
ITO |
Kudo, T., Mayama, S., Ishii, M., Pyo, T.-S., Yamashita, T., & Morino, J. |
8 |
ITO |
Itoh, Y., Oasa, Y., Funayama, H., Hayashi, M., Fukagawa, M., Hashiguchi, T., & |
8 |
ITO |
Currie, T. |
9 |
STF |
Struve, F.G.W. |