Unresolved from J013349.22+303809.3 of comparable brightness 0.24 arcseconds away.
MJD | V | * | Image | B | * | Image | R | * | Images | I | * | Images |
---|---|---|---|---|---|---|---|---|---|---|---|---|
56140.38 | 17.16± 0.04 | AB | -- | - | - | 17.05± 0.11 | AB | -- | - | - | ||
56593.16 | 17.02± 0.03 | B | 17.00± 0.03 | B | -- | - | - | -- | - | - | ||
56599.18 | 17.04± 0.04 | AB | 16.97± 0.05 | AB | 16.94± 0.06 | AB | -- | - | - | |||
56976.19 | 17.36± 0.04 | B | 17.22± 0.05 | B | 17.25± 0.07 | B | -- | - | - | |||
57328.16 | 17.30± 0.04 | B | 17.24± 0.04 | B | 17.28± 0.04 | B | -- | - | - | |||
57406.10 | 17.34± 0.05 | B | 17.34± 0.05 | B | 17.32± 0.06 | B | 17.27± 0.09 | B | ||||
57634.36 | 17.49± 0.05 | AB | 17.35± 0.06 | AB | 17.40± 0.06 | AB | 17.58± 0.09 | AB | ||||
57687.13 | 17.38± 0.04 | B | 17.30± 0.06 | B | 17.30± 0.05 | B | 17.52± 0.08 | B | ||||
57964.35 | 17.50± 0.05 | AB | 17.38± 0.07 | AB | 17.42± 0.05 | AB | 17.53± 0.07 | AB | ||||
58043.10 | 17.53± 0.04 | B | -- | - | - | 17.46± 0.04 | B | 17.76± 0.09 | B | |||
58045.18 | 17.37± 0.05 | B | 17.25± 0.07 | B | 17.36± 0.06 | B | -- | - | - | |||
58073.20 | 17.45± 0.05 | X | 17.25± 0.07 | X | -- | - | - | -- | - | - | ||
58103.17 | 17.37± 0.05 | AB | 17.43± 0.04 | B | -- | - | - | -- | - | - | ||
58108.13 | 17.44± 0.05 | AB | 17.33± 0.07 | AB | -- | - | - | 17.50± 0.11 | AB | |||
58312.39 | 17.42± 0.05 | B | 17.35± 0.08 | B | -- | - | - | -- | - | - | ||
58317.37 | 17.39± 0.05 | B | 17.28± 0.07 | B | 17.38± 0.05 | B | -- | - | - | |||
58341.34 | 17.50± 0.07 | B | -- | - | - | -- | - | - | 17.59± 0.08 | B | ||
58342.40 | 17.35± 0.06 | B | 17.28± 0.07 | B | 17.35± 0.06 | B | -- | - | - | |||
58373.15 | 17.56± 0.06 | B | 17.49± 0.07 | B | -- | - | - | -- | - | - | ||
58375.14 | 17.52± 0.05 | B | -- | - | - | 17.46± 0.05 | B | -- | - | - | ||
58420.10 | 17.42± 0.05 | B | 17.24± 0.06 | B | -- | - | - | 17.46± 0.08 | B | |||
58433.00 | 17.50± 0.06 | B | -- | - | - | 17.42± 0.06 | B | 17.70± 0.09 | B | |||
58672.39 | 17.22± 0.07 | B | -- | - | - | 17.11± 0.06 | B | 17.53± 0.15 | B | |||
58673.38 | 17.39± 0.03 | B | 17.36± 0.04 | B | -- | - | - | -- | - | - | ||
58695.36 | 17.40± 0.05 | B | 17.25± 0.05 | B | 17.33± 0.04 | B | -- | - | - | |||
58750.19 | 17.43± 0.04 | B | -- | - | - | 17.35± 0.05 | B | -- | - | - | ||
58779.18 | 17.43± 0.05 | B | 17.22± 0.04 | B | -- | - | - | -- | - | - | ||
58784.12 | 17.37± 0.06 | B | 17.25± 0.05 | B | -- | - | - | -- | - | - | ||
58812.21 | 17.38± 0.05 | AB | -- | - | - | 17.25± 0.07 | B | 17.47± 0.06 | B | |||
58902.06 | 17.37± 0.04 | AB | -- | - | - | 17.34± 0.04 | B | 17.59± 0.10 | B | |||
59056.38 | 17.34± 0.04 | B | 17.29± 0.06 | B | 17.25± 0.05 | B | 17.32± 0.08 | B | ||||
59059.38 | 17.34± 0.05 | B | 17.18± 0.06 | B | -- | - | - | -- | - | - | ||
59081.26 | 17.41± 0.05 | B | -- | - | - | 17.34± 0.05 | B | -- | - | - | ||
59082.32 | 17.42± 0.03 | B | 17.33± 0.03 | B | 17.35± 0.04 | B | -- | - | - | |||
59084.29 | -- | - | - | -- | - | - | 17.21± 0.05 | TB | -- | - | - | |
59161.09 | 17.32± 0.04 | AB | 17.29± 0.05 | AB | 17.27± 0.05 | AB | -- | - | - | |||
59171.11 | 17.25± 0.04 | AB | 17.24± 0.03 | B | -- | - | - | 17.36± 0.08 | AB | |||
59227.09 | 17.32± 0.03 | AB | 17.24± 0.03 | AB | 17.28± 0.04 | B | -- | - | - | |||
59415.37 | 17.39± 0.04 | AB | 17.33± 0.03 | B | 17.32± 0.05 | B | -- | - | - | |||
59441.39 | 17.35± 0.05 | B | 17.23± 0.06 | B | -- | - | - | -- | - | - | ||
59442.39 | 17.36± 0.03 | B | -- | - | - | 17.30± 0.05 | B | 17.34± 0.09 | B | |||
59463.30 | 17.29± 0.05 | AB | -- | - | - | -- | - | - | 17.38± 0.06 | B | ||
59523.16 | 17.30± 0.03 | AB | 17.25± 0.03 | B | 17.23± 0.04 | B | -- | - | - | |||
59525.16 | 17.27± 0.04 | AB | 17.16± 0.05 | B | -- | - | - | 17.53± 0.10 | B | |||
59546.16 | 17.37± 0.03 | AB | -- | - | - | 17.35± 0.05 | B | 17.41± 0.06 | B | |||
59551.13 | 17.30± 0.04 | AB | 17.19± 0.04 | AB | -- | - | - | -- | - | - | ||
59583.15 | 17.41± 0.04 | AB | -- | - | - | 17.34± 0.05 | B | 17.46± 0.09 | B | |||
59608.08 | 17.31± 0.04 | AB | -- | - | - | 17.24± 0.05 | B | 17.45± 0.07 | B |
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 [0.53 mag] | B [0.54 mag] | R [0.52 mag] | |
---|---|---|---|
B [0.53 mag] | 0.74 (31) | ||
R [0.52 mag] | 0.91 (30) | 0.82 (17) | |
I [0.49 mag] | 0.37 (20) | 0.00 (9) | 0.24 (14) |
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) | 6.21 | 0.96 | ||
R (I|R) | 4.03 | 1.11 | 3.24 | 0.84 | |
I (I|R) | 1.75 | 1.30 | 0.06 | 1.03 | 1.44 | 1.06 |
By John C. Martin, University of Illinois Springfield Henry R. Barber Research Observatory
Generated on 2023-08-14 14:15:12 UT-5