Comments on the Apsidal Period of V1647 Sagittarii

Details Comments on the Apsidal Period of V1647 Sagittarii Comments on the Apsidal Period of V1647 Sagittarii

Aug 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000javso..28...31r&link_type=abstract

The Journal of the American Association of Variable Star Observers, vol. 28, no. 1, p. 31-33

Mathematics

Probability

V1647 Sagittarii, Apsidal Period

Scientific paper

The apsidal motion of V1647 Sagittarii is reviewed and some doubts are put in evidence: for some photographic observed minima an absurd result is obtained (cos(a) < -1), and from the photoelectric and spectroscopic observations it is found that two values of the apsidal period (U = 727 and U = 648 years) have the same degree of probability. The binary system V1647 Sgr is therefore recomended for new series of photoelectric and spectroscopic observations.

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