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Title:
WY Sagittae/Nova 1783/ - Spectroscopic confirmation of Weaver's candidate and discovery of deep eclipses
Authors:
Shara, M. M.; Moffat, A. F. J.
Publication:
Astrophysical Journal, Part 1, vol. 264, Jan. 15, 1983, p. 560-562. Research supported by the Natural Sciences and Engineering Research Council of Canada (ApJ Homepage)
Publication Date:
01/1983
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
ECLIPSING BINARY STARS, NOVAE, STELLAR SPECTROPHOTOMETRY, BALMER SERIES, ELECTROPHOTOMETRY, HELIUM, SAGITTARIUS CONSTELLATION
DOI:
10.1086/160624
Bibliographic Code:
1983ApJ...264..560S

Abstract

Spectroscopic observations for Weaver's (1951) faint blue variable candidate 'N' for Nova WY Sagittae (1783) are presented. Results show a typical cataclysmic variable spectrum with strong Balmer, He I, and He II emission lines superposed on a continuum. The spectroscopic results, together with the star's rapid optical flickering and the excellent positional agreement with d'Agelet's nova (1783), confirm the identity of Weaver's candidate. In addition, it is found that the old nova undergoes deep eclipses of greater than or equal to 2 mag, and the binary orbital period is (1.0756 + or - 0.0002)/N days, where 1 is less than or equal to N and N is less than 9.

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