NSV 7457 Her: a new EW star with an unusual B-V light curve.

Details NSV 7457 Her: a new EW star with an unusual B-V light curve. NSV 7457 Her: a new EW star with an unusual B-V light curve.

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993geoce..21....1v&link_type=abstract

GEOS Circ., No. EB21, p. 1 - 8

Physics

Scientific paper

Visual estimates and photoelectric measurements allowed to confirm the variability of NSV 7457 and to determine its ephemeris. It is probably an EW type but the DSCT type cannot be dismissed with certainty. Its elements now agree with : JD hel 47643.1786 (min) + 0.4190306 d×E. Its magnitude varies from 9.85 to 10.45 in V with a color index B-V going from 0.618 to 0.684 in the Johnson system.

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