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Title: ULTRACAM photometry of the ultra-compact binary V407 Vul
Author(s): Marsh, T.R.; Dhillon, V.S.; Steeghs, D.; Barros, S.C.C.; Groot, P.J. ; Nelemans, G.A. ; Ramsay, G.; Roelofs, G.H.A.
Publication year: 2005
In: Hameury, J.-M.; Lasota, J.-P. (ed.), APS Conf. Ser. 330: The Astrophysics of Cataclysmic Variables and Related, pp. 507-508
Publisher: Strasbourg, France : Astronomical Society of the Pacific
ISBN: 1583811931
Related links: http://ukads.nottingham.ac.uk/cgi-bin/nph-bib_query?bibcode=2005ASPC..330..507M&db_key=AST&high=43cce817f329891
Publication type: Article in monograph or in proceedings

Please use this identifier to cite or link to this item : http://hdl.handle.net/2066/33128   http://hdl.handle.net/2066/33128

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Editor(s): Hameury, J.-M.; Lasota, J.-P.
Subject: Astronomy
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
Abstract:
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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