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pi PsA - Who Are You?


Axel Thomas

Geographisches InstitŸt, Johannes Gutenberg UniversitŠt, D-65   Mainz, Germany


Received: May 28, 1991




Visual estimates are presented that show ¹ PsA to have a semiregular light curve with an average amplitude of 0.7 magnitude and a period of approximately 8.625 days.  These results are in contrast to the available literature, that either calls ¹ PsA a small-amplitude Cepheid or states that the star was not variable in 1964 and 1970.  Spectra and absolute magnitude indicate that the star lies outside the instability strip.


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