L1551-51

 

 

 

 

HBC397

 
Alternative names:
HBC 397, NTTS 042916+1751
Type:
WTTS
Spectral type:
K7
Photometric data:
U-B:
 1. 01
B-V:
 1. 23
V:
 12. 06
V-R:
 0. 75
R-I:
 0. 70
J-H:
 0. 63
H-K:
 0. 16
K:
 8. 77
K-L:
 0. 17
IRAS Fluxes(Jy): F12  = 0. 07 [66]
F25  = 0. 05 [66]
F60  = 0. 15 [66]
F100 =
Activity parameters:
Pphot:
2.43 days
[7]
V Range:
< 0.1 m
 [7]
vsini:
27 Km/s
X-rays luminosity: (ROSAT)
1.23×1030 erg s-1 (0.1-2.5 KeV)
 [9]
(EINSTEIN)
8.13×1029 erg s-1 (0.16-3.5 KeV)
 [15]
Wind parameters:
W(Hα) :
0.5 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
(erg2- cm s) (-erg2- cm s) (erg2- cm s) (-erg2- cm s) (-erg2- cm s) (-erg2- cm s) (-erg-- cm2s˚A ) (-erg-- cm2s˚A )
5.2E-14 1.2E-15

 

 

IUE spectra:
no ¯
 Cam. Image Disp. Ap. Date T. exp. Comments Mag
 
[min.]
 
1 LWP 16686 L L 89-10-29 135.00 E=90,C=81,B=58 11.8