Abstract
A New Algol-Variable in Andromeda.?Astr. Nach. 5877 contains a paper on this star by its discoverer, Herr K. Lassovszky. He found it on a plate that he took at Neubabelsberg on April 27, 1931? its position for the equinox of 1855 is 23h 42m 18s, N. Decl. 44° 58?4', and its designation 381, 1931 Andromeda. He took a series of plates on fifteen nights between July 23 and Aug. 21, 1931, to study the light curve? the period is 0?79365d or about 19 hours. The magnitude is 11?26 at maximum, and falls to 11?87 at minimum; the duration of eclipse is 0?160d? the light-curve appears pointed at minimum, showing that the eclipses are not annular, as in that case the curve is flat at minimum. The observations do not show any trace of a secondary minimum, such as occurs in Algol? it may be concluded that the eclipsing star is much fainter than the other. The star is less than 2° distant from ''Selected Area No. 43?? Herr Lassovszky utilised this fact to obtain the magnitudes of his comparison stars by comparing them with stars in that well-surveyed region. It reflects credit on a single observer to have both discovered the star's variability and deduced an accurate light-curve in the course of a year.
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Astronomical Topics. Nature 130, 173 (1932). https://doi.org/10.1038/130173a0
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DOI: https://doi.org/10.1038/130173a0