Period Change of ES Del

Details Period Change of ES Del Period Change of ES Del

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ibvs.5208....1w&link_type=abstract

Information Bulletin on Variable Stars, 5208, 1.

Physics

3

Scientific paper

The period of ES Del, a Mira-type variable, was proposed to be 373.9 d.
However, a different period of 509.6 d has been recently suggested.
Nonlinear period change is proposed: P=373.9 d in 1935-1949, P=404 d or
472 d in 1949-1965, P=509.6d in 1982-1999.

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