Direct distances to nearby galaxies using detached eclipsing binaries and cepheids. V. Variables in the field M31F

We undertook a long-term project, DIRECT, to obtain the direct distances to two important galaxies in the cosmological distance ladder-M31 and M33-usi ng detached eclipsing binaries (DEBs) and Cepheids. While rare and difficul t to detect, DEBs provide us with the potential to determine these distance s with an accuracy better than 5%. The extensive photometry obtained in ord er to detect DEBs provides us with good light curves for the Cepheid variab les. These are essential to the parallel project to derive direct Baade-Wes selink distances to Cepheids in M31 and M33. For both Cepheids and eclipsin g binaries, the distance estimates will be free of any intermediate steps. As a first step in the DIRECT project, between September 1996 and October 1 997 we obtained 95 full/partial nights on the F. L. Whipple Observatory 1.2 m telescope and 36 full nights on the Michigan-Dartmouth-MIT 1.3 m telesco pe to search for DEBs and new Cepheids in the M31 and M33 galaxies. In this paper, the fifth in the series, we present the catalog of variable stars f ound in the held M31F [(alpha,delta)= (10 degrees 10, 40 degrees 72), J2000 .0]. We have found 64 variable stars: four eclipsing binaries, 52 Cepheids and eight other periodic, possible long-period or nonperiodic variables. Th e catalog of variables, as well as their photometry and finding charts, is available via anonymous ftp and the World Wide Web. The complete set of the CCD frames is available upon request.