V830 Tau

 

 

HBC405

 

 







Alternative names:
HBC 405, WK 2, P4
Type:
WTTS
Spectral type:
K7, M0 V
Photometric data:
U-B:
1. 09
B-V:
1. 37
V:
12. 21
V-R:
0. 86
R-I:
0. 85
J-H:
0. 70
H-K:
0. 18
K:
8. 54
K-L:
0. 26
IRAS Fluxes(Jy): F12  = 0. 08 [66]
F25  = 0. 09 [66]
F60  = 0. 10 [66]
F100 = 0. 34 [66]
Activity parameters:
Pphot:
2.75 days
[3]
V Range:
~ 0.3 m
[3]
vsini:
29 Km/s
X-rays luminosity: (EINSTEIN)
1.78×1030 erg s-1 (0.16-3.5 KeV)
[15]
Wind parameters:
W(Hα) :
3 Å
W([OI]) :
Associated with:
Binarity:
Characteristics:
Single
[47, 62]






 

 

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 )








8.1E-14 2.0E-15








 

 

IUE spectra:









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









 
1 LWP 07539 L L 86-01-20 120.00 E=122,C=76,B=55 12.0
2 LWP 12850 L L 88-03-14 240.00 E=205,C=115,B=88 12.0
 
3 LWR 14391 L L 82-10-12 130.00 E=127,C=100,B=60 12.2
 
4 SWP 32708 L L 88-01-12 830.00 E=147,C=186,B=155 11.9