GK Tau

 

 

 

HBC57

 
Alternative names:
HBC 57, Haro6-22, St 30
Type:
CTTS
Spectral type:
K7 V
Photometric data:
U-B:
 0. 34
B-V:
 1. 38
V:
 12. 14
V-R:
 1. 27
R-I:
 1. 01
J-H:
 1. 01
H-K:
 0. 72
K:
 7. 14
K-L:
 1. 89
IRAS Fluxes(Jy): F12  = 2. 19
F25  = 2. 87
F60  = 1. 90
F100 =
Activity parameters:
Pphot:
4.65 days
[6]
V Range:
~ 1 m
[6]
vsini:
17 Km/s
X-rays luminosity: (EINSTEIN)
1.58×1030 erg s-1 (0.16-3.5 KeV)
 [15]
Wind parameters:
W(Hα) :
16 Å
W([OI]) :
0.4 Å
 [8]
Associated with:
Binarity:
Characteristics:
Multiple system
Components:
  GI Tau:
d =
12′′2
 [46]
PA=
151∘
 [46]
  GK Tau /c:
d =
2′′4
 [48]
PA=
66∘
 [48]

 

 

IUE data:
Mg II Si II He II C IV Si IV O I F 2900 F1855
(erg2- cm s) (-erg2- cm s) (erg2- cm s) (-erg2- cm s) (-erg2- cm s) (-erg2- cm s) (-erg-- cm2s˚A ) (-erg-- cm2s˚A )
1.6E-13 2.9E-15

 

 

IUE spectra:
no ¯
 Cam. Image Disp. Ap. Date T. exp.
Comments
 Mag
 
[min.]
 
1 LWP 26647 L L 93-10-27 20.00 E=57,C=49,B=35 —
2 LWP 26648 L L 93-10-27 120.00 E=130,C=83,B=53 —
3 SWP 48590 L L 93-09-09 330.00 C=105,B=81 —