Full text: The internal constitution of the stars

182 
VARIABLE STARS 
Table 24. 
Cepheid Variables—Observational Data. 
No. 
Star 
Type 
Te 
Period 
Magnitude 
Light-Range 
CO 
8R 
(n) 
Vis. 
Bol. 
Vis. 
Photog. 
(10 6 km.) 
1 
1 Car. 
F8-G9 
O 
4400 
d 
35-523 
m 
- 5*13 
m 
- 5-53 
m 
1-5 
m 
0-36 
o 
99 
8-59 
2 
Y Oph. 
F 5-G 3 
5050 
17-121 
- 4-00 
- 4-17 
0-61 
0-16 
202 
1-79 
3 
XCyg. 
F 5 
5750 
16-385 
- 3-92 
- 3-97 
0-69 
1-16 
0-25 
101 
6-12 
4 
£ Gem. 
GO 
4900 
10-155 
- 3-16 
- 3-37 
0-42 
1-00 
0-20 
338 
1-82 
5 
S Sge. 
F4-G3 
5150 
8-382 
- 2-87 
- 3-02 
0-50 
0-86 
0-60 
75 
1-47 
6 
W Sgr. 
A 8-G 2 
5750 
7-594 
- 2-72 
- 2-77 
0-85 
0-36 
43 
1-93 
7 
r/ Aql. 
A 8-G 5 
5500 
7-176 
- 2-62 
- 2-70 
0-51 
1-09 
0-47 
66 
1-77 
8 
X Sgr. 
F1-G5 
5250 
7-012 
- 2-60 
- 2-73 
0-67 
0-40 
94 
1-33 
9 
Y Sgr. 
F4-G4 
5050 
5-773 
- 2-30 
- 2-47 
0-74 
1-13 
0-42 
74 
1-35 
10 
8 Cep. 
F0-G2 
5550 
5-366 
- 2-19 
- 2-27 
0-61 
1-08 
0-48 
85 
1-27 
11 
T Vul. 
A 9-G 1 
5750 
4-435 
- 1-95 
- 2-00 
0-71 
M3 
0-44 
104 
0-966 
12 
SUCyg. 
A 6-F7 
6450 
3-845 
- 1-78 
- 1-78 
0-74 
1-15 
0-31 
108 
0-709 
13 
RTAur. 
A 1-G 1 
5950 
3-728 
- 1-74 
- 1-76 
0-80 
0-37 
95 
0-856 
14 
SZ Tau. 
A 9-GO 
5850 
3-148 
- 1-58 
- 1-62 
0-58 
0-24 
77 
0-460 
15 
SU Cas. 
A 9—F 5 
6350 
1-950 
- 1-15 
- 1-15 
0-33 
0-47 
0-0 
0-295 
16 
RR Lyr. 
B9-F2 
7800 
0-567 
- 0-35 
- 0-39 
0-85 
1-06 
0-25 
111 
0-166 
17 
Polaris 
F 8 
5250 
3-968 
- 1-81 
- 1-94 
0-08 
0-17 
0-13 
80 
0-165 
18 
ß Cep. 
B 1 
19000 
0-190 
- 0-37 
- 2-00 
0-05 
0-0 
0-045 
Table 25. 
Cepheid Variables—Theoretical Results. 
No. 
Star 
M 
(Sun = l) 
1-ß 
R 
(10 6 km.) 
Pc 
R V Pc 
y c (10 6 
degrees) 
a' 
(10 6 km.) 
S R 
R 
STe 
Te 
1 
l Car. 
50-3 
•74 
145 
•000433 
0-74 
2-61 
117 
•059 
•117 
2 
Y Oph. 
22-6 
•62 
58-6 
•00288 
0-92 
4-24 
54-9 
•031 
•054 
3 
XCyg. 
19-2 
•60 
4M 
•00713 
1-38 
5-39 
50-5 
•148 
•069 
4 
£ Gem. 
15-4 
•56 
43-0 
•00496 
0-71 
4-56 
34-1 
•042 
•036 
5 
S Sge. 
12-8 
•52 
33-3 
•00894 
0-79 
5-34 
28-2 
•044 
•045 
6 
W Sgr. 
10-9 
•49 
23-7 
•0209 
M0 
6-78 
25-0 
•081 
•085 
7 
rj Aql. 
10-7 
•49 
25-3 
•0170 
0-94 
6-23 
24-0 
•070 
•049 
8 
X Sgr. 
11-1 
•49 
27-9 
•0131 
0-80 
5-87 
23-9 
•048 
•061 
9 
Y Sgr. 
10-0 
•47 
26-8 
•0134 
0-67 
5-72 
20-3 
•050 
•065 
10 
8 Cep. 
8-8 
•45 
20-2 
•0273 
0-89 
6-93 
18-5 
•063 
•058 
11 
T Vul. 
7-7 
•42 
16-7 
•0427 
0-92 
7-74 
15-6 
•058 
•071 
12 
SU Cyg. 
6-8 
•39 
12-0 
•102 
1-23 
10-00 
13-6 
•059 
•083 
13 
RT Aur. 
6-9 
•39 
13-9 
•0656 
0-95 
8-76 
13-4 
•062 
•083 
14 
SZ Tau. 
6-6 
•38 
13-5 
•0691 
0-83 
8-76 
11-8 
•034 
•036 
15 
SU Cas. 
5-3 
•33 
9-2 
•175 
0-82 
11-2 
8-0 
•032 
•036 
16 
RR Lyr. 
3-7 
•26 
4-32 
1-18 
0-62 
18-3 
31 
•039 
•112 
17 
Polaris 
7-8 
•42 
19-6 
•0267 
0-65 
6-66 
14-5 
•008 
•007 
18 
ß Cep. 
5-1 
•33 
1-52 
37-3 
116 
65-5 
1-7 
•030 
•015
	        
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