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VW Cha |
HBC575
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Alternative names: |
HBC 575, HM17, Sz 24 |
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Type: |
CTTS |
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Spectral type: |
K2 |
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Photometric data: |
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U-B: |
-0. |
16 |
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B-V: |
1. |
24 |
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V: |
12. |
51 |
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V-R: |
1. |
01*i |
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R-I: |
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J-H: |
1. |
03 |
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H-K: |
0. |
76 |
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K: |
6. |
95 |
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K-L: |
0. |
76 |
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| IRAS Fluxes(Jy): |
F12 = |
2. |
00 |
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F25 = |
4. |
41b |
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F60 = |
11. |
55b |
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F100 = |
20. |
33c |
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Activity parameters: |
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Pphot: |
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V Range: |
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vsini: |
26 Km/s |
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| X-rays luminosity: |
(ROSAT) |
2.0×1030 erg s-1 (0.4-2.5 KeV) |
[21] |
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(EINSTEIN) |
1.29×1030 erg s-1 (0.2-4 KeV) |
[20] |
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Wind parameters: |
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W(Hα) : |
116 Å |
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W([OI]) : |
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Associated with: |
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Binarity: |
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| Characteristics: |
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Double system |
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| Sz 23: |
d = |
16′′7 |
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[54] |
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PA= |
221∘ |
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[54] |
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IUE spectra:
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n |
Cam. |
Image |
Disp. |
Ap. |
Date |
T. exp. |
Comments |
Mag |
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[min.] |
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| 1 |
LWP |
04990 |
L |
L |
84-12-14 |
20.00 |
E=104,C=74,B=50 |
12.4 |
| 2 |
LWP |
05168 |
L |
L |
85-01-09 |
30.00 |
ECC=232 |
12.4 |
| 3 |
LWP |
11883 |
L |
L |
87-10-15 |
200.00 |
ECC=252 |
12.4 |
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| 4 |
SWP |
24872 |
L |
L |
85-01-09 |
420.00 |
E=121,C=113,B=84 |
12.4 |
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