CHAPTER II.—T ANDROMEDA?. 
27 
complete light-curve. 
(Fig. 5, page 25.) 
too 
days 
200 
300 
■4-00 
Ui 
Q 
O 
h 
z 
< 
5 
// 
1 2 
A3 
s 
1 
T A ND/20 ME DA E 
M =. 258 d 
m = /32 
M-m ■ /26 
s 
5 
:$ 
2 
1 
This is formed by platting the magnitudes (in the Harvard system) from Table 
11, and indicating the limit of visibility when the variable was not seen by the 
point of the V-shaped character. A smooth curve drawn through the platted 
points shows the light changes of the variable. When the number of observations 
is insufficient to give an accurate 
curve, it is drawn with a broken 
line by the aid of the mean curve. 6 
The dates and magnitudes of max¬ 
ima and minima given in Table 13 
are taken from this light-curve. The g 
correction to the ephemeris, given 
in the sixth column, is calculated 
from the elements at the head of 
the table, with the corrected period 10 
284 days. The weight in the sev¬ 
enth column results from the num¬ 
ber of observations combined with 
their symmetry with respect to the 
maximum or minimum. In case of 
a symmetrical distribution the 
weight is f times the number. If 
the observations all lie on one side 
the weight is \ the number. In 
case the date of maximum or mini¬ 
mum depends on the mean curve, 
the letters “me'’ are placed in the 
magnitude column. 
Table 13. —103 T Andromeda. 
Elements of maximum. 
$ 
5 
Fig. 6.— Mean Light-Curve of T Andromed.e. 
Observed Maxima and Minima. 
1894 Nov. 28 (J. D. 2413161) + 284 d X (E-51). M-m=126 J 
Maxima. 
Minima. 
tC 
Date. 
Mag. 
rC 
Date. 
Mag. 
CJ 
Corr. 
Wt. 
O 
Lorr. 
wt. 
P« 
W 
Calendar. 
J. D. 
H. 
P. 
w 
Calendar. 
J- D- 
H. 
P. 
50 
1894 Mar. 2 
2890 
me 
+13 
6 
51 
1894 July 26 
3036 
me 
+ 1 
2 
51 
Dec. 3 
3166 
8 49 
8-57 
+ 5 
24 
52 
1895 May 6 
3320 
me 
+ 1 
7 
52 
1895 Sept. 9 
3446 
8.58 
8.66 
+ 1 
28 
53 
1896 Feb. 14 
3604 
inc 
4 - 1 
6 
53 
1896 June 13 
3724 
me 
- 5 
2 
54 
1896 N.ov. 24 
3888 
12.90 
12.98 
4 - 1 
15 
54 
1897 Mar. 21 
4005 
me 
- 8 
3 
55 
1897 Aug. 16 
4153 
12.82 
12.90 
- 18 
17 
55 
Dec. 31 
4290 
8.30 
8.38 
- 7 
13 
56 
1898 June 3 
4444 
me 
— 11 
I 
56 
1898 Oct. 18 
458 i 
8.32 
8.40 
0 
10 
57 
1899 Mar. 11 
4725 
12.9 
13.0 
- 14 
4 
57 
1899 July 22 
4858 
me 
- 7 
4 
58 
Dee. 25 
5014 
12.90 
12.98 
- 9 
20 
58 
1900 Apr. 29 
5139 
8.6 
— 10 
7 
59 
1900 Sept. 28 
5291 
13.00 
13.08 
— 16 
10 
59 
1901 Feb. 2 
54 i 7 
me 
— 16 
2 
62 
1903 Feb. 14 
6160 
1.3-2 
13-3 
4 - 1 
1 
64 
1905 Jan. 14 
6860 
me 
+ 7 
2 
64 
1904 Sept. 6 
6730 
me 
+ 3 
5 
