ULTRACAM photometry of the ultra-compact binary V407 Vul
Publication year
2005Author(s)
Publisher
Strasbourg, France : Astronomical Society of the Pacific
ISBN
1583811931
In
Hameury, J.-M.; Lasota, J.-P. (ed.), APS Conf. Ser. 330: The Astrophysics of Cataclysmic Variables and Related, pp. 507-508Related links
Publication type
Article in monograph or in proceedings

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Editor(s)
Hameury, J.-M.
Lasota, J.-P.
Organization
Astrophysics
Book title
Hameury, J.-M.; Lasota, J.-P. (ed.), APS Conf. Ser. 330: The Astrophysics of Cataclysmic Variables and Related
Page start
p. 507
Page end
p. 508
Subject
AstronomyAbstract
V407 Vul is a 20<SUP>th</SUP> magnitude star that varies on a period of 570 seconds at both X-ray and optical wavelengths. Its properties lead Cropper et al (1998) to suggest that this is the orbital period of two white dwarfs. We present photometry of V407 Vul taken simultaneously in u', g' and i'. We find that the pulsations are progressively delayed when one moves to shorter wavelengths. We find no modulation in the position of V407 Vul on the sky, indicating that the G/K star in its spectrum is less than 0.03 arcseconds on the sky away from the variable.
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