Color composite thumbnail image of M33C-22022M33C-22022 (J013432.02+304817.0)



Target Notes

Color composite thumbnail image of M33C-22022

Classification: OB-Supergiant

No blend concerns.

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
56976.16 18.65± 0.06-M33C-22022 in filter V on MJD  56976.160
18.64± 0.07-M33C-22022 in filter B on MJD  56976.160
18.27± 0.06-M33C-22022 in filter R on MJD  56976.160
----
57038.13 18.67± 0.05-M33C-22022 in filter V on MJD  57038.130
18.70± 0.06-M33C-22022 in filter B on MJD  57038.130
18.39± 0.06-M33C-22022 in filter R on MJD  57038.130
----
57310.13 18.63± 0.09-M33C-22022 in filter V on MJD  57310.130
18.49± 0.09-M33C-22022 in filter B on MJD  57310.130
18.36± 0.07-M33C-22022 in filter R on MJD  57310.130
----
57335.18 18.69± 0.07-M33C-22022 in filter V on MJD  57335.180
---- 18.37± 0.06-M33C-22022 in filter R on MJD  57335.180
----
57401.10 18.66± 0.06-M33C-22022 in filter V on MJD  57401.100
18.67± 0.07-M33C-22022 in filter B on MJD  57401.100
--------
57634.34 18.64± 0.06-M33C-22022 in filter V on MJD  57634.340
18.63± 0.08-M33C-22022 in filter B on MJD  57634.340
18.37± 0.06-M33C-22022 in filter R on MJD  57634.340
18.71± 0.10-M33C-22022 in filter I on MJD  57634.340
57638.35 18.84± 0.04-M33C-22022 in filter V on MJD  57638.350
18.82± 0.07-M33C-22022 in filter B on MJD  57638.350
18.54± 0.06-M33C-22022 in filter R on MJD  57638.350
18.81± 0.11-M33C-22022 in filter I on MJD  57638.350
57687.13 18.69± 0.07-M33C-22022 in filter V on MJD  57687.130
18.69± 0.08-M33C-22022 in filter B on MJD  57687.130
18.44± 0.06-M33C-22022 in filter R on MJD  57687.130
18.66± 0.12-M33C-22022 in filter I on MJD  57687.130
57964.37 18.65± 0.05-M33C-22022 in filter V on MJD  57964.370
18.66± 0.06-M33C-22022 in filter B on MJD  57964.370
18.40± 0.05-M33C-22022 in filter R on MJD  57964.370
18.84± 0.11-M33C-22022 in filter I on MJD  57964.370
58045.15 18.69± 0.07-M33C-22022 in filter V on MJD  58045.150
18.61± 0.08-M33C-22022 in filter B on MJD  58045.150
18.33± 0.07-M33C-22022 in filter R on MJD  58045.150
----
58073.18 18.79± 0.06-M33C-22022 in filter V on MJD  58073.180
18.64± 0.07-M33C-22022 in filter B on MJD  58073.180
--------
58103.14 18.69± 0.05-M33C-22022 in filter V on MJD  58103.140
-------- 18.36± 0.12-M33C-22022 in filter I on MJD  58103.140
58316.38 18.68± 0.05-M33C-22022 in filter V on MJD  58316.380
18.61± 0.07-M33C-22022 in filter B on MJD  58316.380
18.43± 0.05-M33C-22022 in filter R on MJD  58316.380
18.76± 0.11-M33C-22022 in filter I on MJD  58316.380
58317.39 18.86± 0.07-M33C-22022 in filter V on MJD  58317.390
---- 18.51± 0.09-M33C-22022 in filter R on MJD  58317.390
M33C-22022 in filter R on MJD  58317.390
----
58341.38 18.80± 0.08AM33C-22022 in filter V on MJD  58341.380
M33C-22022 in filter V on MJD  58341.380
18.68± 0.09-M33C-22022 in filter B on MJD  58341.380
18.57± 0.09-M33C-22022 in filter R on MJD  58341.380
18.77± 0.17AM33C-22022 in filter I on MJD  58341.380
M33C-22022 in filter I on MJD  58341.380
58342.38 18.83± 0.10AM33C-22022 in filter V on MJD  58342.380
M33C-22022 in filter V on MJD  58342.380
18.56± 0.10AM33C-22022 in filter B on MJD  58342.380
M33C-22022 in filter B on MJD  58342.380
M33C-22022 in filter B on MJD  58342.380
18.45± 0.07AM33C-22022 in filter R on MJD  58342.380
M33C-22022 in filter R on MJD  58342.380
M33C-22022 in filter R on MJD  58342.380
18.71± 0.12-M33C-22022 in filter I on MJD  58342.380
M33C-22022 in filter I on MJD  58342.380
M33C-22022 in filter I on MJD  58342.380
58420.06 18.81± 0.07-M33C-22022 in filter V on MJD  58420.060
18.75± 0.08-M33C-22022 in filter B on MJD  58420.060
18.39± 0.07-M33C-22022 in filter R on MJD  58420.060
> 18.36-M33C-22022 in filter I on MJD  58420.060
58433.00 18.65± 0.10-M33C-22022 in filter V on MJD  58433.000
---- 18.48± 0.08-M33C-22022 in filter R on MJD  58433.000
> 18.32-M33C-22022 in filter I on MJD  58433.000
58672.39 18.94± 0.14-M33C-22022 in filter V on MJD  58672.390
---- 18.29± 0.07-M33C-22022 in filter R on MJD  58672.390
> 18.05-M33C-22022 in filter I on MJD  58672.390
58695.36 18.84± 0.06-M33C-22022 in filter V on MJD  58695.360
18.70± 0.06-M33C-22022 in filter B on MJD  58695.360
18.54± 0.05-M33C-22022 in filter R on MJD  58695.360
----
58696.39 18.76± 0.05-M33C-22022 in filter V on MJD  58696.390
18.70± 0.07-M33C-22022 in filter B on MJD  58696.390
M33C-22022 in filter B on MJD  58696.390
18.49± 0.05-M33C-22022 in filter R on MJD  58696.390
M33C-22022 in filter R on MJD  58696.390
----
58779.15 18.63± 0.07-M33C-22022 in filter V on MJD  58779.150
---- 18.35± 0.06-M33C-22022 in filter R on MJD  58779.150
> 18.37-M33C-22022 in filter I on MJD  58779.150
58784.12 18.70± 0.06-M33C-22022 in filter V on MJD  58784.120
18.64± 0.06-M33C-22022 in filter B on MJD  58784.120
--------
58812.22 18.64± 0.05-M33C-22022 in filter V on MJD  58812.220
-------- 18.49± 0.08-M33C-22022 in filter I on MJD  58812.220
58902.06 18.73± 0.05AM33C-22022 in filter V on MJD  58902.060
M33C-22022 in filter V on MJD  58902.060
---- 18.46± 0.06-M33C-22022 in filter R on MJD  58902.060
18.36± 0.11-M33C-22022 in filter I on MJD  58902.060
59056.38 18.76± 0.05-M33C-22022 in filter V on MJD  59056.380
18.75± 0.07-M33C-22022 in filter B on MJD  59056.380
18.47± 0.06-M33C-22022 in filter R on MJD  59056.380
18.48± 0.10-M33C-22022 in filter I on MJD  59056.380
59081.33 18.75± 0.04-M33C-22022 in filter V on MJD  59081.330
18.63± 0.06-M33C-22022 in filter B on MJD  59081.330
18.49± 0.04-M33C-22022 in filter R on MJD  59081.330
----
59082.35 18.74± 0.05-M33C-22022 in filter V on MJD  59082.350
18.63± 0.07-M33C-22022 in filter B on MJD  59082.350
M33C-22022 in filter B on MJD  59082.350
18.49± 0.06-M33C-22022 in filter R on MJD  59082.350
M33C-22022 in filter R on MJD  59082.350
----
59084.34-------- 18.51± 0.04TM33C-22022 in filter R on MJD  59084.340
----
59171.08 18.66± 0.07AM33C-22022 in filter V on MJD  59171.080
M33C-22022 in filter V on MJD  59171.080
18.61± 0.08-M33C-22022 in filter B on MJD  59171.080
18.35± 0.07-M33C-22022 in filter R on MJD  59171.080
18.22± 0.10AM33C-22022 in filter I on MJD  59171.080
M33C-22022 in filter I on MJD  59171.080
59227.07 18.69± 0.05AM33C-22022 in filter V on MJD  59227.070
M33C-22022 in filter V on MJD  59227.070
18.67± 0.06AM33C-22022 in filter B on MJD  59227.070
M33C-22022 in filter B on MJD  59227.070
18.47± 0.06AM33C-22022 in filter R on MJD  59227.070
M33C-22022 in filter R on MJD  59227.070
----
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 M33C-22022Plot of color for M33C-22022

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 [0.33 mag]B [0.31 mag]R [0.30 mag]
B [0.33 mag]0.23 (22)
R [0.30 mag]0.16 (25)0.19 (19)
I [0.62 mag]0.08 (12)0.03 (9)0.13 (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 M33C-22022

Plot to assess correlation between bands for M33C-22022

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)
0.58 | 0.64
R
(I|R)
0.95 | 0.990.70 | 0.19
I
(I|R)
0.50 | 0.630.29 | 0.590.51 | 0.48

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