WHT observations of cataclysmic variables in globular clusters - I. V101 in M5 during quiescence and outburst

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Abstract
We use WHT spectroscopy and photometry to investigate the structure of the cataclysmic vaiable V101, in the globular cluster M5. We find an encouraging consistency between the properties derived from the color, magnitude, radial-velocity variations and outburst light curve. All these indicate that V101's orbital period lies above the period gap, (i.e. is greater than 3 hr), that it is at the distance of M5, and is probably a dwarf nova.

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