TW Cha

 

 

HBC567

 







Alternative names:
HBC 567, HM3, Sz 5
Type:
CTTS
Spectral type:
M0:
Photometric data:
U-B:
-0. 16
B-V:
0. 85
V:
13. 08
V-R:
0. 92*i
R-I:
0. 85*i
J-H:
0. 85
H-K:
0. 61
K:
8. 72
K-L:
0. 91
IRAS Fluxes(Jy): F12  = 0. 20
F25  = 0. 36
F60  = 0. 42
F100 = 0. 11c
Activity parameters:
Pphot:
8.3 days
[4]
V Range:
vsini:
15 Km/s
X-rays luminosity: (ROSAT)
1.0×1030 erg s-1 (0.4-2.5 KeV)
[21]
(EINSTEIN)
<6.45×1029 erg s-1 (0.2-4 KeV)
[21]
Wind parameters:
W(Hα) :
26 Å
W([OI]) :
Associated with:
Binarity:
Characteristics:






 

 

 

IUE data:








Mg II Si II He II C IV Si IV O I F 2900 F1855
(ecmr2gs-) (cemrg2s) (ecmr2gs-) (cermg2s) (cermg2s) (cemrg2s) (-er2g--
cm s˚A ) (-erg2--
cm s˚A )








2.5E-13 5.6E-15








 

 

IUE spectra:









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









 
1 LWP 11884 L L 87-10-15 100.00 ECC=352 13.2