STUDIES ON THE VAKIABLES OF THE ALGOL-TYPE. / 



LIST OF ALGOLS. 



Accepting the above definitions of the Algol, we will now 

 examine the catalogue of variable stars, to pick up the stars 

 whose light-change goes according to these laws. In this way, 

 we compiled a list of Algols but as there are quite a number of 

 variables for which some variation of light is suspected but not 

 yet confirmed, and also some suspected Algols which need more 

 satisfactory observations, the list will be soon changed. The 

 following table contains 93 Algols, and among these stars, there 

 are a few which are classified by some astronomei's as the 

 variables of the short period. But these stars were taken up 

 by myself after some deliberations. The table shows the pro- 

 visional number of Algol, and the year in which each was 

 found, in the order of its discover}', in the first column. The 

 second column represents the number of the list and this is 

 followed by the name of the star. The fourth and fifth repre- 

 sent the position of the star in right ascension and declination, 

 the equinox of 1900 being adopted. The sixth column is the 

 period in the rounded figures and the seventh is the ratio 

 between the period and the duration of the eclipse, the reciprocal 

 being the duration of the eclipse in the term of the period. The 

 eighth, ninth and tenth represent the maximum brightness, range 

 of variation, and the spectrum respectively. 



