WDS 04226+2538 ITO 23 BC : NOTES
 
 
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
 
 
REFERENCES
 
 
refcode metd author reference
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Trr2006b X - Torres, G. 2006AJ....131.1702T
Trr2006b +orb AJ 131, 1702, 2006
 
 
DISCOVERER
 
 
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.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
04226+2538 ITO 23 BC 2003 1 245 11.5 6.94 12.54 F8V N K 042235.53+253803.3
04226+2538 ITO 23 BC 2015 2 245 11.6 6.94 12.54 F8V N K 042235.53+253803.3

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