Unresolved blend contending with two LGGS stars (J013311.85+303852.7, J013311.88+303853.5) including target M33C-13254. See M33C-13254 for photometry of the blend. ***Updated 180530***
No photometry to plot (See Notes<>)
No photometry (See Notes<>)
Welch & Stetson (1993, AJ, 105, 1813) present a method for varible star detection in CCD images from automated surveys. Data from two bands are compared and two statistics are calculated: R and I.
The I-statistic has an expectation value of zero for stars that are NOT variable. A larger non-zero I-value indicates a higher likelihood that the star is variable. The R statistic indicates how the color of the star changes as the variable grows brighter with R = 1.0 being no change in color.
R and I values have only been calculated if there are more than four (4) matched measurements of brightness in each band.
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By John C. Martin, University of Illinois Springfield Henry R. Barber Research Observatory
Generated on 2021-11-06 16:53:54 UT-5