Unresolved from J013422.89+304410.9 of comparable brightness 0.3 arcseconds away.
MJD | V | * | Image | B | * | Image | R | * | Images | I | * | Images |
---|---|---|---|---|---|---|---|---|---|---|---|---|
56140.37 | 16.96± 0.05 | B | -- | - | - | 16.99± 0.10 | B | -- | - | - | ||
56599.17 | 17.05± 0.05 | B | 17.11± 0.06 | B | 16.87± 0.05 | B | -- | - | - | |||
56976.16 | 17.06± 0.04 | B | 17.14± 0.06 | B | 16.91± 0.05 | B | -- | - | - | |||
57038.13 | 17.09± 0.04 | B | 17.15± 0.05 | B | 16.95± 0.04 | B | -- | - | - | |||
57310.13 | 17.06± 0.05 | B | 17.10± 0.07 | B | 16.87± 0.05 | B | -- | - | - | |||
57335.18 | 17.05± 0.06 | B | -- | - | - | 16.85± 0.04 | B | -- | - | - | ||
57401.10 | 17.03± 0.04 | B | 17.08± 0.05 | B | -- | - | - | -- | - | - | ||
57634.34 | 17.01± 0.04 | B | 17.08± 0.07 | B | 16.86± 0.05 | B | 16.75± 0.06 | B | ||||
57687.13 | 17.03± 0.04 | B | 17.08± 0.06 | B | 16.91± 0.04 | B | 16.75± 0.06 | B | ||||
57964.35 | 16.89± 0.04 | AB | 16.94± 0.06 | AB | 16.71± 0.05 | AB | 16.58± 0.06 | AB | ||||
58045.16 | 16.97± 0.05 | AB | 17.05± 0.07 | AB | 16.80± 0.05 | AB | -- | - | - | |||
58073.19 | 16.90± 0.04 | AB | 16.98± 0.06 | AB | -- | - | - | -- | - | - | ||
58103.16 | 16.92± 0.04 | AB | 17.00± 0.04 | B | -- | - | - | 16.65± 0.06 | B | |||
58108.13 | 16.94± 0.05 | AB | 16.96± 0.07 | AB | -- | - | - | 16.66± 0.08 | AB | |||
58312.39 | 16.95± 0.05 | B | 17.00± 0.07 | B | -- | - | - | -- | - | - | ||
58316.38 | 16.98± 0.03 | B | 17.08± 0.05 | B | 16.84± 0.03 | B | 16.69± 0.05 | B | ||||
58317.37 | 16.96± 0.04 | B | 17.00± 0.07 | B | 16.80± 0.04 | B | -- | - | - | |||
58341.34 | 17.02± 0.06 | B | -- | - | - | -- | - | - | 16.74± 0.07 | B | ||
58342.38 | 16.96± 0.04 | AB | 17.05± 0.06 | AB | 16.80± 0.04 | AB | 16.70± 0.06 | B | ||||
58375.14 | 17.00± 0.04 | B | -- | - | - | 16.85± 0.05 | B | -- | - | - | ||
58420.08 | 16.94± 0.04 | AB | 16.97± 0.06 | AB | 16.84± 0.04 | B | 16.66± 0.07 | AB | ||||
58433.00 | 17.06± 0.05 | B | -- | - | - | 16.91± 0.05 | B | 16.79± 0.06 | B | |||
58672.39 | 17.04± 0.07 | B | -- | - | - | 16.81± 0.05 | B | 16.58± 0.09 | B | |||
58695.36 | 17.08± 0.05 | B | 17.07± 0.05 | B | 16.88± 0.04 | B | -- | - | - | |||
58696.39 | 17.02± 0.04 | B | 17.07± 0.06 | B | 16.85± 0.04 | B | -- | - | - | |||
58779.15 | 17.02± 0.04 | B | -- | - | - | 16.83± 0.05 | B | 16.61± 0.07 | B | |||
58784.12 | 17.16± 0.05 | B | 17.21± 0.05 | B | -- | - | - | -- | - | - | ||
58812.22 | 17.05± 0.05 | B | -- | - | - | -- | - | - | 16.78± 0.05 | B | ||
58902.06 | 17.06± 0.04 | AB | -- | - | - | 16.91± 0.04 | B | 16.65± 0.07 | B | |||
59056.38 | 16.98± 0.04 | B | 17.08± 0.06 | B | 16.79± 0.04 | B | 16.66± 0.07 | B | ||||
59059.38 | 17.00± 0.05 | B | 17.02± 0.06 | B | -- | - | - | -- | - | - | ||
59081.30 | 17.12± 0.04 | AB | 17.16± 0.06 | B | 16.97± 0.04 | AB | -- | - | - | |||
59082.34 | 17.12± 0.03 | AB | 17.17± 0.05 | AB | 16.97± 0.05 | AB | -- | - | - | |||
59084.34 | -- | - | - | -- | - | - | 16.97± 0.04 | TB | -- | - | - | |
59161.09 | 17.14± 0.04 | AB | 17.21± 0.05 | AB | 16.99± 0.04 | AB | -- | - | - | |||
59171.09 | 17.11± 0.04 | AB | 17.22± 0.05 | AB | 16.85± 0.05 | B | 16.88± 0.08 | AB | ||||
59227.08 | 17.03± 0.03 | AB | 17.09± 0.04 | AB | 16.87± 0.05 | AB | -- | - | - | |||
59415.37 | 17.18± 0.04 | AB | 17.33± 0.04 | B | 16.99± 0.04 | B | -- | - | - | |||
59441.40 | 16.98± 0.05 | AB | 17.00± 0.06 | B | 16.82± 0.05 | B | 16.64± 0.07 | B | ||||
59442.39 | 17.09± 0.02 | B | -- | - | - | 16.90± 0.05 | B | 16.78± 0.08 | B | |||
59463.28 | 17.11± 0.04 | AB | 17.14± 0.06 | B | -- | - | - | 16.88± 0.05 | B | |||
59523.16 | 17.02± 0.03 | AB | 17.15± 0.02 | B | 16.84± 0.04 | B | -- | - | - | |||
59525.14 | 16.96± 0.04 | AB | 17.04± 0.05 | B | 16.79± 0.05 | B | -- | - | - | |||
59546.18 | 17.09± 0.04 | AB | 17.08± 0.06 | B | 16.97± 0.04 | B | 16.80± 0.05 | B | ||||
59551.12 | 17.02± 0.04 | AB | 17.13± 0.04 | AB | -- | - | - | 16.60± 0.08 | B | |||
59583.16 | 16.96± 0.04 | AB | 16.99± 0.06 | B | 16.83± 0.04 | B | -- | - | - | |||
59608.09 | 17.08± 0.04 | AB | -- | - | - | 16.97± 0.05 | AB | 16.86± 0.06 | 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 [0.39 mag] | B [0.30 mag] | R [0.28 mag] | |
---|---|---|---|
B [0.39 mag] | 0.83 (35) | ||
R [0.28 mag] | 0.60 (35) | 0.56 (26) | |
I [0.30 mag] | 0.53 (22) | 0.52 (14) | 0.50 (16) |
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) | 2.74 | 0.91 | ||
R (I|R) | 1.99 | 1.12 | 3.30 | 0.24 | |
I (I|R) | 1.76 | 1.01 | 1.37 | 0.86 | 1.51 | 0.94 |
By John C. Martin, University of Illinois Springfield Henry R. Barber Research Observatory
Generated on 2023-08-14 14:15:12 UT-5