Discovery of Eclipsing Binary Nature of SAO 31628 = BD+49d2997, Common Comparison Star for CH Cygni

Details Discovery of Eclipsing Binary Nature of SAO 31628 = BD+49d2997, Common Comparison Star for CH Cygni Discovery of Eclipsing Binary Nature of SAO 31628 = BD+49d2997, Common Comparison Star for CH Cygni

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ibvs.4983....1s&link_type=abstract

Information Bulletin on Variable Stars, 4983, 1.

Computer Science

2

Eclipsing, Photometry

Scientific paper

SAO 31628, which is frequently used as a constant comparison star in
observations of the variable symbiotic CH Cygni, has been found to be an
eclipsing binary. The eclipse, which is seen in B light, lasts 5 hours
and produces a flux decrease of over 20. We propose that SAO 31628 has
an orbital period of 3.74783(3) days.

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