Photometric research on the eclipsing variable ZZ cassiopeiae

✍ Scribed by Israel Monroe Levitt

• Publisher: Elsevier Science
• Year: 1949
• Tongue: English
• Weight: 624 KB
• Volume: 247
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(49)90720-6

✦ Synopsis

The observations on which this work is based were made with the wedge photometer attached to the 18-in. telescope of the Flower Observatory. This instrument and its method of use have been described fully in the literature (1),2 for which reason this procedure will be omitted here. For this program each observation consisted of five estimates of equality on the variable and a like number on the comparison star.

in the tables of timesof minima and the tables of normals the times are given in Julian Days with the decimals of a day expressed in Greenwich Mean Time measured from noon and reduced to the Sun.

It is a pleasant duty to express my gratitude to Dr. C. P. Olivier, at whose suggestion this work was undertaken and who made possible my work with the 18-in. telescope; to Dr. Newton L. Pierce for his guidance and help in the solution of the problem; to Dr. Henry Norris Russell