Color composite thumbnail image of V-015651V-015651 (J013256.44+303530.8)



Target Notes

Color composite thumbnail image of V-015651

Classification: OB-Supergiant

Unresolved from LGGS J013256.45+303530.5 which is 3 magnitudes fainter in V and of comparable brightness in BRI.

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
56140.39 18.34± 0.05bV-015651 in filter V on MJD  56140.390
---- 18.52± 0.32BV-015651 in filter R on MJD  56140.390
----
56593.16 18.35± 0.05bV-015651 in filter V on MJD  56593.160
18.25± 0.04BV-015651 in filter B on MJD  56593.160
--------
56599.19 18.31± 0.06bV-015651 in filter V on MJD  56599.190
18.14± 0.04BV-015651 in filter B on MJD  56599.190
18.18± 0.07BV-015651 in filter R on MJD  56599.190
----
56976.19 18.45± 0.08bV-015651 in filter V on MJD  56976.190
18.34± 0.06BV-015651 in filter B on MJD  56976.190
18.38± 0.07BV-015651 in filter R on MJD  56976.190
----
57035.14 18.17± 0.06bV-015651 in filter V on MJD  57035.140
18.26± 0.07BV-015651 in filter B on MJD  57035.140
18.07± 0.07XV-015651 in filter R on MJD  57035.140
----
57310.16 18.31± 0.06bV-015651 in filter V on MJD  57310.160
18.25± 0.06BV-015651 in filter B on MJD  57310.160
18.35± 0.07BV-015651 in filter R on MJD  57310.160
----
57328.16 18.47± 0.05bV-015651 in filter V on MJD  57328.160
18.37± 0.04BV-015651 in filter B on MJD  57328.160
18.30± 0.05BV-015651 in filter R on MJD  57328.160
----
57406.10 18.37± 0.09bV-015651 in filter V on MJD  57406.100
18.21± 0.10BV-015651 in filter B on MJD  57406.100
18.41± 0.10BV-015651 in filter R on MJD  57406.100
17.88± 0.13BV-015651 in filter I on MJD  57406.100
57634.38 18.39± 0.05bV-015651 in filter V on MJD  57634.380
18.35± 0.06BV-015651 in filter B on MJD  57634.380
18.27± 0.07BV-015651 in filter R on MJD  57634.380
18.15± 0.10BV-015651 in filter I on MJD  57634.380
57638.39 18.38± 0.04bV-015651 in filter V on MJD  57638.390
18.34± 0.05BV-015651 in filter B on MJD  57638.390
18.26± 0.04BV-015651 in filter R on MJD  57638.390
18.28± 0.09BV-015651 in filter I on MJD  57638.390
57964.40 18.43± 0.04bV-015651 in filter V on MJD  57964.400
-------- 18.33± 0.11ABV-015651 in filter I on MJD  57964.400
V-015651 in filter I on MJD  57964.400
57988.42---- 18.45± 0.05TBV-015651 in filter B on MJD  57988.420
--------
58043.11 18.38± 0.05AbV-015651 in filter V on MJD  58043.110
V-015651 in filter V on MJD  58043.110
18.29± 0.04BV-015651 in filter B on MJD  58043.110
18.32± 0.06ABV-015651 in filter R on MJD  58043.110
V-015651 in filter R on MJD  58043.110
17.96± 0.09BV-015651 in filter I on MJD  58043.110
58073.22 18.38± 0.06bV-015651 in filter V on MJD  58073.220
18.38± 0.06-V-015651 in filter B on MJD  58073.220
--------
58108.09 18.39± 0.04bV-015651 in filter V on MJD  58108.090
18.32± 0.04BV-015651 in filter B on MJD  58108.090
---- 18.20± 0.10BV-015651 in filter I on MJD  58108.090
58316.35 18.38± 0.07bV-015651 in filter V on MJD  58316.350
18.38± 0.05BV-015651 in filter B on MJD  58316.350
--------
58341.37 18.40± 0.06bV-015651 in filter V on MJD  58341.370
-------- 18.19± 0.11BV-015651 in filter I on MJD  58341.370
58373.15 18.46± 0.08bV-015651 in filter V on MJD  58373.150
18.37± 0.07BV-015651 in filter B on MJD  58373.150
--------
58433.02 18.34± 0.07bV-015651 in filter V on MJD  58433.020
---- 18.38± 0.07BV-015651 in filter R on MJD  58433.020
18.10± 0.11BV-015651 in filter I on MJD  58433.020
58673.38 18.38± 0.04bV-015651 in filter V on MJD  58673.380
18.33± 0.05BV-015651 in filter B on MJD  58673.380
--------
58695.39 18.38± 0.05bV-015651 in filter V on MJD  58695.390
---- 18.22± 0.04BV-015651 in filter R on MJD  58695.390
----
58750.20 18.36± 0.05AbV-015651 in filter V on MJD  58750.200
V-015651 in filter V on MJD  58750.200
18.36± 0.04BV-015651 in filter B on MJD  58750.200
18.31± 0.05BV-015651 in filter R on MJD  58750.200
18.07± 0.09BV-015651 in filter I on MJD  58750.200
58779.18 18.75± 0.12bV-015651 in filter V on MJD  58779.180
18.24± 0.06BV-015651 in filter B on MJD  58779.180
--------
58784.14 18.38± 0.05bV-015651 in filter V on MJD  58784.140
---- 18.26± 0.05BV-015651 in filter R on MJD  58784.140
----
58812.20 18.53± 0.07bV-015651 in filter V on MJD  58812.200
---- 18.31± 0.07BV-015651 in filter R on MJD  58812.200
----
59059.40 18.42± 0.06bV-015651 in filter V on MJD  59059.400
---- 18.32± 0.06BV-015651 in filter R on MJD  59059.400
18.61± 0.21BV-015651 in filter I on MJD  59059.400
59081.30 18.42± 0.06bV-015651 in filter V on MJD  59081.300
18.26± 0.05BV-015651 in filter B on MJD  59081.300
18.30± 0.05BV-015651 in filter R on MJD  59081.300
----
59082.35 18.39± 0.05AbV-015651 in filter V on MJD  59082.350
V-015651 in filter V on MJD  59082.350
18.29± 0.03ABV-015651 in filter B on MJD  59082.350
V-015651 in filter B on MJD  59082.350
V-015651 in filter B on MJD  59082.350
18.31± 0.05ABV-015651 in filter R on MJD  59082.350
V-015651 in filter R on MJD  59082.350
V-015651 in filter R on MJD  59082.350
----
59084.25-------- 18.28± 0.04TBV-015651 in filter R on MJD  59084.250
----
59161.12 18.41± 0.05AbV-015651 in filter V on MJD  59161.120
V-015651 in filter V on MJD  59161.120
18.34± 0.04BV-015651 in filter B on MJD  59161.120
18.30± 0.05ABV-015651 in filter R on MJD  59161.120
V-015651 in filter R on MJD  59161.120
18.30± 0.11BV-015651 in filter I on MJD  59161.120
59171.13 18.33± 0.05AbV-015651 in filter V on MJD  59171.130
V-015651 in filter V on MJD  59171.130
18.26± 0.04ABV-015651 in filter B on MJD  59171.130
V-015651 in filter B on MJD  59171.130
---- 18.18± 0.09ABV-015651 in filter I on MJD  59171.130
V-015651 in filter I on MJD  59171.130
59227.11 18.38± 0.04AbV-015651 in filter V on MJD  59227.110
V-015651 in filter V on MJD  59227.110
18.31± 0.03ABV-015651 in filter B on MJD  59227.110
V-015651 in filter B on MJD  59227.110
18.30± 0.05BV-015651 in filter R on MJD  59227.110
----
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-015651Plot of color for V-015651

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 [0.31 mag]B [0.58 mag]R [0.34 mag]
B [0.31 mag]0.03 (22)
R [0.34 mag]0.00 (19)0.03 (13)
I [0.74 mag]0.37 (12)0.42 (8)0.21 (8)

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-015651

Plot to assess correlation between bands for V-015651

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)
0.56 | 1.35
R
(I|R)
0.10 | 0.950.41 | 1.97
I
(I|R)
0.42 | 0.400.48 | 0.69-0.59 | 0.41

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