Color composite thumbnail image of M33C-8293M33C-8293 (J013359.08+303437.1)



Target Notes

Color composite thumbnail image of M33C-8293

Classification: OB-Supergiant

Unresolved from J013359.03+303436.9 one magnitude fainter in V and comparable brightness in BRI 1 arcsecond WSW.

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
56140.38 17.59± 0.05ABM33C-8293 in filter V on MJD  56140.380
M33C-8293 in filter V on MJD  56140.380
---- 17.23± 0.12ABM33C-8293 in filter R on MJD  56140.380
M33C-8293 in filter R on MJD  56140.380
----
56593.16 17.50± 0.04BM33C-8293 in filter V on MJD  56593.160
17.39± 0.03BM33C-8293 in filter B on MJD  56593.160
--------
56599.18 17.59± 0.05ABM33C-8293 in filter V on MJD  56599.180
M33C-8293 in filter V on MJD  56599.180
17.54± 0.06ABM33C-8293 in filter B on MJD  56599.180
M33C-8293 in filter B on MJD  56599.180
17.15± 0.06ABM33C-8293 in filter R on MJD  56599.180
M33C-8293 in filter R on MJD  56599.180
----
56976.16 17.46± 0.04BM33C-8293 in filter V on MJD  56976.160
17.52± 0.06BM33C-8293 in filter B on MJD  56976.160
17.28± 0.05BM33C-8293 in filter R on MJD  56976.160
----
56982.22 17.62± 0.06BM33C-8293 in filter V on MJD  56982.220
17.55± 0.06BM33C-8293 in filter B on MJD  56982.220
17.30± 0.07BM33C-8293 in filter R on MJD  56982.220
----
57038.13 17.67± 0.05BM33C-8293 in filter V on MJD  57038.130
17.63± 0.05BM33C-8293 in filter B on MJD  57038.130
17.31± 0.05BM33C-8293 in filter R on MJD  57038.130
----
57310.13 17.43± 0.06BM33C-8293 in filter V on MJD  57310.130
17.51± 0.07BM33C-8293 in filter B on MJD  57310.130
16.96± 0.05BM33C-8293 in filter R on MJD  57310.130
----
57328.17 17.61± 0.05ABM33C-8293 in filter V on MJD  57328.170
M33C-8293 in filter V on MJD  57328.170
17.60± 0.06ABM33C-8293 in filter B on MJD  57328.170
M33C-8293 in filter B on MJD  57328.170
17.36± 0.06ABM33C-8293 in filter R on MJD  57328.170
M33C-8293 in filter R on MJD  57328.170
----
57335.18 17.55± 0.06BM33C-8293 in filter V on MJD  57335.180
---- 17.36± 0.05BM33C-8293 in filter R on MJD  57335.180
----
57401.10 17.62± 0.05BM33C-8293 in filter V on MJD  57401.100
17.57± 0.06BM33C-8293 in filter B on MJD  57401.100
--------
57406.10 17.59± 0.06BM33C-8293 in filter V on MJD  57406.100
17.52± 0.06BM33C-8293 in filter B on MJD  57406.100
17.26± 0.05BM33C-8293 in filter R on MJD  57406.100
16.86± 0.07BM33C-8293 in filter I on MJD  57406.100
57634.37 17.56± 0.06ABM33C-8293 in filter V on MJD  57634.370
M33C-8293 in filter V on MJD  57634.370
17.53± 0.08ABM33C-8293 in filter B on MJD  57634.370
M33C-8293 in filter B on MJD  57634.370
17.31± 0.07ABM33C-8293 in filter R on MJD  57634.370
M33C-8293 in filter R on MJD  57634.370
16.87± 0.06BM33C-8293 in filter I on MJD  57634.370
57638.43 17.62± 0.07BM33C-8293 in filter V on MJD  57638.430
-------- 16.92± 0.10BM33C-8293 in filter I on MJD  57638.430
57687.13 17.62± 0.05BM33C-8293 in filter V on MJD  57687.130
17.48± 0.07BM33C-8293 in filter B on MJD  57687.130
17.26± 0.05BM33C-8293 in filter R on MJD  57687.130
16.86± 0.07BM33C-8293 in filter I on MJD  57687.130
57964.35 17.69± 0.05ABM33C-8293 in filter V on MJD  57964.350
M33C-8293 in filter V on MJD  57964.350
17.65± 0.07ABM33C-8293 in filter B on MJD  57964.350
M33C-8293 in filter B on MJD  57964.350
17.41± 0.05ABM33C-8293 in filter R on MJD  57964.350
M33C-8293 in filter R on MJD  57964.350
17.00± 0.07ABM33C-8293 in filter I on MJD  57964.350
M33C-8293 in filter I on MJD  57964.350
58045.16 17.63± 0.05ABM33C-8293 in filter V on MJD  58045.160
M33C-8293 in filter V on MJD  58045.160
17.64± 0.07ABM33C-8293 in filter B on MJD  58045.160
M33C-8293 in filter B on MJD  58045.160
17.30± 0.06BM33C-8293 in filter R on MJD  58045.160
----
58073.20 17.67± 0.05BM33C-8293 in filter V on MJD  58073.200
17.50± 0.07ABM33C-8293 in filter B on MJD  58073.200
M33C-8293 in filter B on MJD  58073.200
--------
58103.18 17.58± 0.06TBM33C-8293 in filter V on MJD  58103.180
------------
58108.11 17.61± 0.06BM33C-8293 in filter V on MJD  58108.110
17.58± 0.08BM33C-8293 in filter B on MJD  58108.110
---- 17.05± 0.10BM33C-8293 in filter I on MJD  58108.110
58312.39 17.65± 0.05BM33C-8293 in filter V on MJD  58312.390
17.72± 0.09BM33C-8293 in filter B on MJD  58312.390
--------
58317.37 17.60± 0.05BM33C-8293 in filter V on MJD  58317.370
17.65± 0.06BM33C-8293 in filter B on MJD  58317.370
17.35± 0.05BM33C-8293 in filter R on MJD  58317.370
----
58341.34 17.56± 0.07BM33C-8293 in filter V on MJD  58341.340
-------- 16.92± 0.07BM33C-8293 in filter I on MJD  58341.340
58342.40 17.60± 0.06BM33C-8293 in filter V on MJD  58342.400
17.67± 0.08BM33C-8293 in filter B on MJD  58342.400
17.34± 0.06BM33C-8293 in filter R on MJD  58342.400
----
58375.14 17.50± 0.05BM33C-8293 in filter V on MJD  58375.140
---- 17.23± 0.05BM33C-8293 in filter R on MJD  58375.140
----
58420.10 17.49± 0.05BM33C-8293 in filter V on MJD  58420.100
17.68± 0.07BM33C-8293 in filter B on MJD  58420.100
---- 16.73± 0.07BM33C-8293 in filter I on MJD  58420.100
58433.00 17.53± 0.06BM33C-8293 in filter V on MJD  58433.000
---- 17.29± 0.06BM33C-8293 in filter R on MJD  58433.000
16.73± 0.07BM33C-8293 in filter I on MJD  58433.000
58672.39 17.52± 0.08BM33C-8293 in filter V on MJD  58672.390
---- 17.19± 0.06BM33C-8293 in filter R on MJD  58672.390
16.86± 0.11BM33C-8293 in filter I on MJD  58672.390
58695.36 17.54± 0.05BM33C-8293 in filter V on MJD  58695.360
17.60± 0.05BM33C-8293 in filter B on MJD  58695.360
17.31± 0.04BM33C-8293 in filter R on MJD  58695.360
----
58757.17 17.60± 0.06BM33C-8293 in filter V on MJD  58757.170
---- 17.25± 0.05BM33C-8293 in filter R on MJD  58757.170
----
58784.12 17.60± 0.06BM33C-8293 in filter V on MJD  58784.120
17.57± 0.06BM33C-8293 in filter B on MJD  58784.120
--------
58812.22 17.36± 0.05BM33C-8293 in filter V on MJD  58812.220
-------- 16.73± 0.06BM33C-8293 in filter I on MJD  58812.220
58902.06 17.60± 0.04ABM33C-8293 in filter V on MJD  58902.060
M33C-8293 in filter V on MJD  58902.060
---- 17.27± 0.05BM33C-8293 in filter R on MJD  58902.060
16.80± 0.08BM33C-8293 in filter I on MJD  58902.060
59056.38 17.58± 0.04BM33C-8293 in filter V on MJD  59056.380
17.61± 0.06BM33C-8293 in filter B on MJD  59056.380
17.13± 0.05BM33C-8293 in filter R on MJD  59056.380
16.85± 0.08BM33C-8293 in filter I on MJD  59056.380
59059.39 17.66± 0.06ABM33C-8293 in filter V on MJD  59059.390
M33C-8293 in filter V on MJD  59059.390
17.59± 0.06BM33C-8293 in filter B on MJD  59059.390
17.45± 0.05BM33C-8293 in filter R on MJD  59059.390
16.87± 0.09BM33C-8293 in filter I on MJD  59059.390
59081.29 17.66± 0.06ABM33C-8293 in filter V on MJD  59081.290
M33C-8293 in filter V on MJD  59081.290
17.62± 0.05BM33C-8293 in filter B on MJD  59081.290
17.31± 0.05ABM33C-8293 in filter R on MJD  59081.290
M33C-8293 in filter R on MJD  59081.290
----
59082.32 17.59± 0.03BM33C-8293 in filter V on MJD  59082.320
17.57± 0.04BM33C-8293 in filter B on MJD  59082.320
M33C-8293 in filter B on MJD  59082.320
17.34± 0.05BM33C-8293 in filter R on MJD  59082.320
M33C-8293 in filter R on MJD  59082.320
M33C-8293 in filter R on MJD  59082.320
----
59084.36-------- 17.27± 0.06TBM33C-8293 in filter R on MJD  59084.360
M33C-8293 in filter R on MJD  59084.360
----
59161.08 17.48± 0.05BM33C-8293 in filter V on MJD  59161.080
17.65± 0.05ABM33C-8293 in filter B on MJD  59161.080
M33C-8293 in filter B on MJD  59161.080
17.33± 0.05BM33C-8293 in filter R on MJD  59161.080
----
59171.09 17.65± 0.07BM33C-8293 in filter V on MJD  59171.090
-------- 16.93± 0.06BM33C-8293 in filter I on MJD  59171.090
59227.09 17.59± 0.04ABM33C-8293 in filter V on MJD  59227.090
M33C-8293 in filter V on MJD  59227.090
17.61± 0.04ABM33C-8293 in filter B on MJD  59227.090
M33C-8293 in filter B on MJD  59227.090
17.31± 0.05BM33C-8293 in filter R on MJD  59227.090
----
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-8293Plot of color for M33C-8293

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 [0.33 mag]R [0.49 mag]
B [0.33 mag]0.08 (27)
R [0.49 mag]0.30 (27)0.23 (20)
I [0.32 mag]0.50 (15)0.00 (8)0.15 (9)

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-8293

Plot to assess correlation between bands for M33C-8293

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)
0.71 | 1.04
R
(I|R)
1.10 | 0.740.73 | 0.13
I
(I|R)
1.51 | 1.20-0.03 | 0.930.72 | 2.35

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