Color composite thumbnail image of V-021331V-021331 (J013303.47+303323.0)



Target Notes

Color composite thumbnail image of V-021331

Classification: OB-Supergiant

Unresolved from LGGS J013303.48+303322.5 of comparable brightness and J013303.47+303322.4 >2 magnitudes fainter.

Find In Simbad Query LGGS Massey (2016) at VizieR Query CAT WISE (Eisenhardt et al., 2020) at VizieR Query Gaia EDR3 (2020) at VizieR LBT Spectra @UMN
Query M33 Variability Hartman et al. Survey (2006) at VizieR


Photometry Table

Download table (txt) Key to Flags in Table Key For Images Plot/Graph Variability
MJDV*ImageB*ImageR*ImagesI*Images
56140.40 18.31± 0.06BV-021331 in filter V on MJD  56140.400
---- 18.07± 0.13BV-021331 in filter R on MJD  56140.400
----
56593.16 18.34± 0.04BV-021331 in filter V on MJD  56593.160
18.28± 0.04BV-021331 in filter B on MJD  56593.160
--------
56599.21 18.34± 0.06ABV-021331 in filter V on MJD  56599.210
V-021331 in filter V on MJD  56599.210
18.19± 0.05ABV-021331 in filter B on MJD  56599.210
V-021331 in filter B on MJD  56599.210
18.20± 0.07ABV-021331 in filter R on MJD  56599.210
V-021331 in filter R on MJD  56599.210
----
56976.19 18.47± 0.06BV-021331 in filter V on MJD  56976.190
18.26± 0.06BV-021331 in filter B on MJD  56976.190
18.36± 0.07BV-021331 in filter R on MJD  56976.190
----
57035.14 18.59± 0.07BV-021331 in filter V on MJD  57035.140
18.29± 0.07BV-021331 in filter B on MJD  57035.140
18.51± 0.10BV-021331 in filter R on MJD  57035.140
----
57310.16 18.50± 0.07BV-021331 in filter V on MJD  57310.160
18.29± 0.06BV-021331 in filter B on MJD  57310.160
18.39± 0.07BV-021331 in filter R on MJD  57310.160
----
57328.16 18.44± 0.04BV-021331 in filter V on MJD  57328.160
18.24± 0.04BV-021331 in filter B on MJD  57328.160
18.25± 0.05BV-021331 in filter R on MJD  57328.160
----
57406.10 18.36± 0.11BV-021331 in filter V on MJD  57406.100
18.25± 0.09BV-021331 in filter B on MJD  57406.100
18.15± 0.08BV-021331 in filter R on MJD  57406.100
18.45± 0.20BV-021331 in filter I on MJD  57406.100
57634.38 18.43± 0.05BV-021331 in filter V on MJD  57634.380
18.35± 0.06BV-021331 in filter B on MJD  57634.380
18.29± 0.07BV-021331 in filter R on MJD  57634.380
18.51± 0.12BV-021331 in filter I on MJD  57634.380
57638.39 18.39± 0.04BV-021331 in filter V on MJD  57638.390
18.22± 0.05BV-021331 in filter B on MJD  57638.390
18.26± 0.04BV-021331 in filter R on MJD  57638.390
18.41± 0.08BV-021331 in filter I on MJD  57638.390
57964.40 18.37± 0.04BV-021331 in filter V on MJD  57964.400
-------- 18.30± 0.10ABV-021331 in filter I on MJD  57964.400
V-021331 in filter I on MJD  57964.400
58043.11 18.41± 0.05ABV-021331 in filter V on MJD  58043.110
V-021331 in filter V on MJD  58043.110
18.39± 0.05BV-021331 in filter B on MJD  58043.110
18.37± 0.05ABV-021331 in filter R on MJD  58043.110
V-021331 in filter R on MJD  58043.110
18.28± 0.10BV-021331 in filter I on MJD  58043.110
58073.22 18.45± 0.06BV-021331 in filter V on MJD  58073.220
18.30± 0.06BV-021331 in filter B on MJD  58073.220
--------
58108.09 18.39± 0.04BV-021331 in filter V on MJD  58108.090
18.26± 0.04BV-021331 in filter B on MJD  58108.090
---- 18.18± 0.09BV-021331 in filter I on MJD  58108.090
58316.35 18.39± 0.07BV-021331 in filter V on MJD  58316.350
18.37± 0.05BV-021331 in filter B on MJD  58316.350
--------
58341.37 18.40± 0.06BV-021331 in filter V on MJD  58341.370
-------- 18.43± 0.11BV-021331 in filter I on MJD  58341.370
58373.15 18.44± 0.08BV-021331 in filter V on MJD  58373.150
18.36± 0.07BV-021331 in filter B on MJD  58373.150
--------
58433.02 18.44± 0.07BV-021331 in filter V on MJD  58433.020
---- 18.33± 0.07BV-021331 in filter R on MJD  58433.020
18.54± 0.14BV-021331 in filter I on MJD  58433.020
58673.38 18.36± 0.04BV-021331 in filter V on MJD  58673.380
18.33± 0.05BV-021331 in filter B on MJD  58673.380
--------
58695.39 18.39± 0.05BV-021331 in filter V on MJD  58695.390
---- 18.29± 0.04BV-021331 in filter R on MJD  58695.390
----
58750.20 18.35± 0.04ABV-021331 in filter V on MJD  58750.200
V-021331 in filter V on MJD  58750.200
18.29± 0.03BV-021331 in filter B on MJD  58750.200
18.29± 0.05BV-021331 in filter R on MJD  58750.200
18.22± 0.09BV-021331 in filter I on MJD  58750.200
58779.18 18.50± 0.06BV-021331 in filter V on MJD  58779.180
18.30± 0.04BV-021331 in filter B on MJD  58779.180
--------
58784.14 18.36± 0.05BV-021331 in filter V on MJD  58784.140
---- 18.31± 0.05BV-021331 in filter R on MJD  58784.140
----
58812.20 18.39± 0.06BV-021331 in filter V on MJD  58812.200
---- 18.37± 0.07BV-021331 in filter R on MJD  58812.200
----
59059.40 18.42± 0.06BV-021331 in filter V on MJD  59059.400
---- 18.33± 0.06BV-021331 in filter R on MJD  59059.400
> 18.43-V-021331 in filter I on MJD  59059.400
59081.34 18.39± 0.06ABV-021331 in filter V on MJD  59081.340
V-021331 in filter V on MJD  59081.340
18.27± 0.05ABV-021331 in filter B on MJD  59081.340
V-021331 in filter B on MJD  59081.340
18.30± 0.05ABV-021331 in filter R on MJD  59081.340
V-021331 in filter R on MJD  59081.340
18.35± 0.10BV-021331 in filter I on MJD  59081.340
59082.35 18.37± 0.05ABV-021331 in filter V on MJD  59082.350
V-021331 in filter V on MJD  59082.350
18.22± 0.03ABV-021331 in filter B on MJD  59082.350
V-021331 in filter B on MJD  59082.350
V-021331 in filter B on MJD  59082.350
V-021331 in filter B on MJD  59082.350
18.25± 0.04ABV-021331 in filter R on MJD  59082.350
V-021331 in filter R on MJD  59082.350
V-021331 in filter R on MJD  59082.350
V-021331 in filter R on MJD  59082.350
----
59084.25-------- 18.27± 0.04TBV-021331 in filter R on MJD  59084.250
----
59161.12 18.34± 0.05ABV-021331 in filter V on MJD  59161.120
V-021331 in filter V on MJD  59161.120
18.23± 0.04BV-021331 in filter B on MJD  59161.120
18.27± 0.05ABV-021331 in filter R on MJD  59161.120
V-021331 in filter R on MJD  59161.120
18.44± 0.11BV-021331 in filter I on MJD  59161.120
59171.14 18.38± 0.05ABV-021331 in filter V on MJD  59171.140
V-021331 in filter V on MJD  59171.140
V-021331 in filter V on MJD  59171.140
18.25± 0.06ABV-021331 in filter B on MJD  59171.140
V-021331 in filter B on MJD  59171.140
V-021331 in filter B on MJD  59171.140
18.40± 0.05BV-021331 in filter R on MJD  59171.140
18.49± 0.10ABV-021331 in filter I on MJD  59171.140
V-021331 in filter I on MJD  59171.140
V-021331 in filter I on MJD  59171.140
59227.13 18.32± 0.05ABV-021331 in filter V on MJD  59227.130
V-021331 in filter V on MJD  59227.130
V-021331 in filter V on MJD  59227.130
18.23± 0.04ABV-021331 in filter B on MJD  59227.130
V-021331 in filter B on MJD  59227.130
V-021331 in filter B on MJD  59227.130
18.29± 0.05ABV-021331 in filter R on MJD  59227.130
V-021331 in filter R on MJD  59227.130
18.38± 0.11BV-021331 in filter I on MJD  59227.130
Download table (txt) Key to Flags in Table Key For Images Plot/Graph Variability


Plots of Brightness and Color

Key for Plot Variability Photometry Table Target Notes

Plot of photometry for V-021331Plot of color for V-021331

Key for Plot Variability Photometry Table Target Notes


Variability

Plot/Graph Photometry Table Target Notes

From the data available in this survey, it is not possible to tell with certainty if this star is variable.

Correlation factors between bands

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 [0.20 mag]B [0.28 mag]R [0.45 mag]
B [0.20 mag]0.11 (22)
R [0.45 mag]0.54 (21)0.21 (15)
I [0.36 mag]0.08 (13)0.03 (10)0.00 (10)

Magnitude-Magnitude Plots

The plots below are provided to check the values in the table above and also to show any non-linear correlations

Plot to assess correlation between bands for V-021331

Plot to assess correlation between bands for V-021331

Plot/Graph Photometry Table Target Notes

I & R Statistics

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)
0.39 | 0.97
R
(I|R)
0.70 | 0.860.70 | 0.80
I
(I|R)
0.15 | 0.60-0.29 | 0.970.05 | 0.96

Back to catalog index


By John C. Martin, University of Illinois Springfield Henry R. Barber Research Observatory

Generated on 2021-11-06 16:53:54 UT-5