V827 Tau

 

 

 

HBC399

 







Alternative names:
HBC 399, FK 2, P3
Type:
WTTS
Spectral type:
K7, M0
Photometric data:
U-B:
1. 12
B-V:
1. 40
V:
12. 18
V-R:
0. 89
R-I:
0. 95
J-H:
0. 72
H-K:
0. 20
K:
8. 13
K-L:
0. 16
IRAS Fluxes(Jy): F12  = 0. 05 [66]
F25  = 0. 08 [66]
F60  = 0. 14 [66]
F100 =
Activity parameters:
Pphot:
3.63 days
[55]
V Range:
~ 0.2 m
[55]
vsini:
18 Km/s
X-rays luminosity: (ROSAT)
3.02×1030 erg s-1 (0.1-2.5 KeV)
[9]
(EINSTEIN)
3.39×1030 erg s-1 (0.16-3.5 KeV)
[15]
Wind parameters:
W(Hα) :
1.8 Å
W([OI]) :
< 0.1 Å
[8]
Associated with:
Binarity:
Characteristics:
Single
[47, 62, 64]






 

 

IUE data:








Mg II Si II He II C IV Si IV O I F 2900 F1855
(erg-
cm2s) (-erg-
cm2s) (erg-
cm2s) (-erg-
cm2s) (-erg-
cm2s) (-erg-
cm2s) (-erg--
cm2s˚A ) (-erg--
cm2s˚A )








7.0E-14 2.1E-15








 

 

IUE spectra:









no
¯
Cam. Image Disp. Ap. Date T. exp.
Comments
Mag
 
[min.]









 
1 LWP 07540 L L 86-01-20 235.00 E=188,C=107,B=80 11.8
 
2 LWR 14374 L L 82-10-10 120.00 E=115,C=90,B=50 12.2