(Candidate LBV) No blend concerns. PSF fits with parameters outside acceptable range are marked "X."
MJD | V | * | Image | B | * | Image | R | * | Images | I | * | Images |
---|---|---|---|---|---|---|---|---|---|---|---|---|
56142.31 | 18.00± 0.08 | T | -- | - | - | -- | - | - | -- | - | - | |
56267.15 | -- | - | - | -- | - | - | 17.34± 0.03 | T | -- | - | - | |
56490.36 | 17.92± 0.04 | A | 18.67± 0.07 | A | -- | - | - | -- | - | - | ||
56536.23 | 17.91± 0.07 | A | -- | - | - | 17.36± 0.04 | A | -- | - | - | ||
56915.13 | 17.97± 0.05 | - | 18.59± 0.07 | - | 17.25± 0.04 | - | -- | - | - | |||
57227.31 | 18.00± 0.04 | - | 18.70± 0.05 | - | 17.31± 0.04 | - | -- | - | - | |||
57310.08 | 18.07± 0.04 | X | -- | - | - | -- | - | - | 17.14± 0.07 | X | ||
57633.28 | 17.94± 0.04 | - | 18.65± 0.06 | - | 17.26± 0.04 | - | -- | - | - | |||
57638.27 | 17.94± 0.05 | - | -- | - | - | -- | - | - | 16.86± 0.05 | - | ||
57928.37 | 18.00± 0.04 | - | 18.55± 0.07 | - | 17.29± 0.04 | - | 16.84± 0.07 | - | ||||
57958.29 | 17.93± 0.04 | - | 18.57± 0.06 | - | -- | - | - | 16.85± 0.05 | - | |||
57988.34 | 18.15± 0.04 | - | 18.83± 0.04 | - | 17.45± 0.03 | - | 17.13± 0.04 | - | ||||
58043.06 | 17.99± 0.04 | - | 18.64± 0.06 | - | -- | - | - | 16.93± 0.06 | - | |||
58077.11 | 18.28± 0.07 | - | 18.86± 0.08 | - | 17.60± 0.06 | - | 17.12± 0.06 | - | ||||
58098.09 | 18.03± 0.05 | - | 18.74± 0.05 | - | 17.31± 0.04 | A | -- | - | - | |||
58312.29 | 18.05± 0.05 | - | 18.69± 0.06 | - | 17.37± 0.04 | - | -- | - | - | |||
58316.26 | 17.95± 0.05 | - | -- | - | - | -- | - | - | 16.88± 0.05 | - | ||
58341.23 | 18.02± 0.06 | - | 18.74± 0.08 | - | -- | - | - | -- | - | - | ||
58366.12 | 18.03± 0.04 | - | 18.69± 0.06 | - | -- | - | - | -- | - | - | ||
58375.12 | 17.98± 0.04 | - | -- | - | - | 17.34± 0.04 | - | -- | - | - | ||
58403.08 | 18.06± 0.04 | - | -- | - | - | -- | - | - | 16.93± 0.06 | - | ||
58433.09 | 17.96± 0.06 | - | 18.64± 0.07 | - | 17.30± 0.06 | - | -- | - | - | |||
58671.33 | 17.99± 0.06 | A | 18.73± 0.08 | A | -- | - | - | -- | - | - | ||
58673.29 | 17.98± 0.08 | - | -- | - | - | 17.28± 0.07 | - | 16.78± 0.08 | - | |||
58695.34 | 17.85± 0.05 | - | -- | - | - | 17.22± 0.04 | - | 16.78± 0.04 | - | |||
58696.30 | 17.92± 0.07 | - | 18.55± 0.07 | - | 17.25± 0.08 | - | -- | - | - | |||
58750.10 | 17.92± 0.06 | A | 18.58± 0.06 | A | -- | - | - | -- | - | - | ||
58779.07 | 18.09± 0.06 | A | -- | - | - | 17.42± 0.04 | A | -- | - | - | ||
58812.08 | 17.98± 0.06 | A | -- | - | - | 17.32± 0.08 | - | 16.89± 0.04 | - | |||
59000.39 | 18.00± 0.09 | - | -- | - | - | 17.36± 0.12 | - | -- | - | - | ||
59055.31 | 17.97± 0.08 | - | -- | - | - | 17.32± 0.08 | - | -- | - | - | ||
59077.20 | 17.97± 0.08 | - | 18.53± 0.08 | - | 17.32± 0.07 | - | 16.85± 0.10 | - | ||||
59131.09 | 17.92± 0.07 | - | -- | - | - | 17.34± 0.07 | - | -- | - | - | ||
59166.12 | 17.99± 0.08 | - | -- | - | - | -- | - | - | 16.91± 0.09 | - | ||
59194.11 | 17.99± 0.07 | - | 18.66± 0.07 | - | -- | - | - | -- | - | - | ||
59376.35 | 17.99± 0.08 | - | 18.65± 0.08 | - | -- | - | - | -- | - | - | ||
59409.37 | 17.93± 0.09 | - | -- | - | - | 17.31± 0.08 | - | -- | - | - | ||
59441.26 | 17.95± 0.07 | - | 18.63± 0.08 | - | -- | - | - | 16.86± 0.09 | - | |||
59467.11 | 18.08± 0.10 | - | -- | - | - | 17.37± 0.06 | - | -- | - | - | ||
59522.04 | 17.95± 0.07 | - | 18.72± 0.08 | - | -- | - | - | 16.87± 0.11 | - | |||
59546.05 | 18.03± 0.07 | - | -- | - | - | 17.36± 0.07 | T | -- | - | - | ||
59583.10 | 18.16± 0.08 | - | 18.84± 0.07 | T | -- | - | - | -- | - | - | ||
59739.36 | 18.09± 0.08 | - | 18.67± 0.09 | - | 17.43± 0.07 | - | -- | - | - | |||
59816.14 | 17.98± 0.07 | - | -- | - | - | -- | - | - | 16.98± 0.07 | - | ||
59851.09 | 18.06± 0.08 | - | 18.78± 0.09 | - | 17.47± 0.07 | - | -- | - | - | |||
59879.03 | 17.87± 0.07 | - | -- | - | - | -- | - | - | 16.75± 0.07 | - | ||
59905.07 | 17.99± 0.07 | - | 18.69± 0.08 | - | 17.38± 0.07 | - | -- | - | - |
If the brightness variation is true variability then there should be a correlation between brightness changes recorded in different filter bands. The following table are the R-squared linear correlation factors calculated for the pairs of bands. The number in parentheses next to the R-squared value is the number of elements used to calculate the correlation factor. The number in square brackets next to the band is the range of magnitudes measured.
V [0.32 mag] | B [0.43 mag] | R [0.38 mag] | |
---|---|---|---|
B [0.32 mag] | 0.59 (26) | ||
R [0.38 mag] | 0.76 (26) | 0.65 (14) | |
I [0.38 mag] | 0.77 (17) | 0.82 (8) | 0.85 (7) |
The plots below are provided to check the values in the table above and also to show any non-linear correlations
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.
V (I|R) | B (I|R) | R (I|R) | |
---|---|---|---|
B (I|R) | 1.53 | 0.99 | ||
R (I|R) | 2.18 | 0.90 | 1.08 | 0.04 | |
I (I|R) | 3.33 | 0.85 | 4.20 | 0.84 | 7.28 | 0.85 |
By John C. Martin, University of Illinois Springfield Henry R. Barber Research Observatory
Generated on 2023-08-14 14:15:12 UT-5