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Table 1

Parameters for the variable stars found.

ID# RA (2000.0) Dec (2000.0) mF814W mF606W − mF814W p.m.(α) p.m.(δ) P Δm Nharm Notes
h:m:s d:m:s (pixels) (pixels) (days) (mag)
3428 17:41:06.078  −53:45:47.62 21.884 1.513  −1.2192 0.4788 2.860 0.047 2 double-wave BY Dra
1383 17:41:11.653  −53:45:02.54 20.538 1.848  −1.3037 0.2494 2.650 0.025 2 double-wave BY Dra
270 17:41:14.751  −53:45:04.94 20.110 1.213  −1.0478 0.7856 2.290 0.044 2 double-wave BY Dra
6119 17:40:58.818  −53:45:41.10 20.054 1.367  −1.4436 0.5940 0.378 0.051 2 W UMa
4430 17:41:03.155  −53:44:49.11 20.456 1.761  −1.2356 0.4401 1.095 0.069 2 BY Dra?
830 17:41:13.183  −53:45:37.72 22.598 2.654  −1.3962 0.6337 2.700 0.026 1 BY Dra?
7523 17:40:55.370  −53:45:27.03 20.306 2.463   1.0304 0.5997 2.520 0.009 1 BY Dra? (weak)
2178 17:41:09.636  −53:43:17.61 19.362 2.146  −1.6238 0.5057 2.790 0.007 1 BY Dra? (weak)
5600 17:41:00.192  −53:42:46.28 19.979 1.271  −1.5276 0.3267  ≈  8.9 0.025 1 BY Dra?
4957 17:41:01.787  −53:43:31.37 20.778 2.520  −1.6460 0.3394  ≈  8 0.019 1 BY Dra?
2086 17:41:09.888  −53:43:10.59 19.359 1.097  −1.5737 0.3106  ≈12 0.006 1 long period
258 17:41:14.789  −53:44:58.36 19.786 0.813  −1.7434 0.3614  ≈25 0.008 1 long period
1882 17:41:10.379  −53:44:52.05 19.430 0.792  −1.0721 0.7363 0.920 0.005 1 spurious candidate?
5936 17:40:59.316  −53:44:06.51 20.524 1.493 0.0181 0.0055 2.120 0.080 – grazing binary?

Notes. The columns give: the ID number of the star, the right ascension α and declination δ at epoch 2000.0, the calibrated magnitude m(F814W) and color m(F814W) − m(F606W), the proper motion (α, δ) in ACS-WFC pixels relative to the cluster, the period found in days, the amplitude found in magnitude, and the number of harmonics employed in the fit and a tentative interpretation.

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