SR 12

 

 

HBC263

 
Alternative names:
HBC 263, ROX 21          
Type:
Spectral type:
Photometric data:
U-B:
 1. 02
B-V:
 1. 55
V:
 13. 27
V-R:
 1. 61*
R-I:
J-H:
 0. 73
H-K:
 0. 28
K:
 8. 29
K-L:
 0. 12
IRAS Fluxes(Jy): F12  = 2. 75
F25  = 5. 60
F60  = 18. 72b
F100 = 111. 96c
Activity parameters:
Pphot:
3.5 days
[3]
V Range:
 0.2
[3]
vsini:
21 Km/s
X-rays luminosity: (ROSAT)
2.51×1030 erg s-1 (1-2.4 KeV)
 [10]
Wind parameters:
W(Hα) :
4 Å
W([OI]) :
Associated with:
Binarity:
Characteristics:
Single
 [32]

 

 

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 )
2.9E-15

 

 

IUE spectra:
no ¯
 Cam. Image Disp. Ap. Date T. exp. Comments Mag
 
[min.]
 
1 LWP 08107 L L 86-04-26 60.00 E=70,B=50 12.9