Color composite thumbnail image of M33C-9304M33C-9304 (J013358.69+303526.5)



Target Notes

Color composite thumbnail image of M33C-9304

Classification: OB-Supergiant

Unresolved from J013358.69+303526.5 and J013358.70+303525.8 of comparable brightness within 1 arcsecond.

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 16.30± 0.05ABM33C-9304 in filter V on MJD  56140.380
M33C-9304 in filter V on MJD  56140.380
---- 16.27± 0.08ABM33C-9304 in filter R on MJD  56140.380
M33C-9304 in filter R on MJD  56140.380
----
56593.16 16.21± 0.03BM33C-9304 in filter V on MJD  56593.160
16.10± 0.02BM33C-9304 in filter B on MJD  56593.160
--------
56599.18 16.21± 0.04ABM33C-9304 in filter V on MJD  56599.180
M33C-9304 in filter V on MJD  56599.180
16.13± 0.05ABM33C-9304 in filter B on MJD  56599.180
M33C-9304 in filter B on MJD  56599.180
16.19± 0.06ABM33C-9304 in filter R on MJD  56599.180
M33C-9304 in filter R on MJD  56599.180
----
56976.18 16.25± 0.04ABM33C-9304 in filter V on MJD  56976.180
M33C-9304 in filter V on MJD  56976.180
16.12± 0.05ABM33C-9304 in filter B on MJD  56976.180
M33C-9304 in filter B on MJD  56976.180
16.17± 0.06ABM33C-9304 in filter R on MJD  56976.180
M33C-9304 in filter R on MJD  56976.180
----
57038.13 16.36± 0.05BM33C-9304 in filter V on MJD  57038.130
16.16± 0.05BM33C-9304 in filter B on MJD  57038.130
16.24± 0.04BM33C-9304 in filter R on MJD  57038.130
----
57310.13 16.15± 0.05BM33C-9304 in filter V on MJD  57310.130
16.08± 0.07BM33C-9304 in filter B on MJD  57310.130
16.20± 0.05BM33C-9304 in filter R on MJD  57310.130
----
57328.16 16.32± 0.04BM33C-9304 in filter V on MJD  57328.160
16.24± 0.04BM33C-9304 in filter B on MJD  57328.160
16.19± 0.04BM33C-9304 in filter R on MJD  57328.160
----
57335.18 16.25± 0.06BM33C-9304 in filter V on MJD  57335.180
---- 16.16± 0.05BM33C-9304 in filter R on MJD  57335.180
----
57401.10 16.30± 0.05BM33C-9304 in filter V on MJD  57401.100
16.14± 0.05BM33C-9304 in filter B on MJD  57401.100
--------
57406.10 16.24± 0.04BM33C-9304 in filter V on MJD  57406.100
16.15± 0.04BM33C-9304 in filter B on MJD  57406.100
16.19± 0.04BM33C-9304 in filter R on MJD  57406.100
16.26± 0.07BM33C-9304 in filter I on MJD  57406.100
57634.37 16.31± 0.05ABM33C-9304 in filter V on MJD  57634.370
M33C-9304 in filter V on MJD  57634.370
M33C-9304 in filter V on MJD  57634.370
16.21± 0.07ABM33C-9304 in filter B on MJD  57634.370
M33C-9304 in filter B on MJD  57634.370
M33C-9304 in filter B on MJD  57634.370
16.24± 0.07ABM33C-9304 in filter R on MJD  57634.370
M33C-9304 in filter R on MJD  57634.370
M33C-9304 in filter R on MJD  57634.370
16.29± 0.06BM33C-9304 in filter I on MJD  57634.370
57638.43 16.25± 0.07BM33C-9304 in filter V on MJD  57638.430
-------- 16.22± 0.10BM33C-9304 in filter I on MJD  57638.430
57687.13 16.24± 0.05BM33C-9304 in filter V on MJD  57687.130
16.09± 0.06BM33C-9304 in filter B on MJD  57687.130
16.19± 0.05BM33C-9304 in filter R on MJD  57687.130
16.27± 0.07BM33C-9304 in filter I on MJD  57687.130
57964.35 16.26± 0.04ABM33C-9304 in filter V on MJD  57964.350
M33C-9304 in filter V on MJD  57964.350
16.16± 0.06ABM33C-9304 in filter B on MJD  57964.350
M33C-9304 in filter B on MJD  57964.350
16.18± 0.05ABM33C-9304 in filter R on MJD  57964.350
M33C-9304 in filter R on MJD  57964.350
16.26± 0.06ABM33C-9304 in filter I on MJD  57964.350
M33C-9304 in filter I on MJD  57964.350
58045.16 16.20± 0.05ABM33C-9304 in filter V on MJD  58045.160
M33C-9304 in filter V on MJD  58045.160
16.06± 0.07ABM33C-9304 in filter B on MJD  58045.160
M33C-9304 in filter B on MJD  58045.160
16.17± 0.05ABM33C-9304 in filter R on MJD  58045.160
M33C-9304 in filter R on MJD  58045.160
----
58073.19 16.29± 0.04ABM33C-9304 in filter V on MJD  58073.190
M33C-9304 in filter V on MJD  58073.190
16.15± 0.06ABM33C-9304 in filter B on MJD  58073.190
M33C-9304 in filter B on MJD  58073.190
--------
58103.18 16.21± 0.05TBM33C-9304 in filter V on MJD  58103.180
------------
58108.11 16.32± 0.06BM33C-9304 in filter V on MJD  58108.110
16.20± 0.08BM33C-9304 in filter B on MJD  58108.110
---- 16.33± 0.08BM33C-9304 in filter I on MJD  58108.110
58312.39 16.32± 0.05BM33C-9304 in filter V on MJD  58312.390
16.17± 0.07BM33C-9304 in filter B on MJD  58312.390
--------
58317.37 16.35± 0.05BM33C-9304 in filter V on MJD  58317.370
16.18± 0.06BM33C-9304 in filter B on MJD  58317.370
16.23± 0.05BM33C-9304 in filter R on MJD  58317.370
----
58341.34 16.30± 0.07BM33C-9304 in filter V on MJD  58341.340
-------- 16.33± 0.07BM33C-9304 in filter I on MJD  58341.340
58342.40 16.34± 0.05BM33C-9304 in filter V on MJD  58342.400
16.21± 0.06BM33C-9304 in filter B on MJD  58342.400
16.30± 0.05BM33C-9304 in filter R on MJD  58342.400
----
58375.14 16.32± 0.04BM33C-9304 in filter V on MJD  58375.140
---- 16.23± 0.05BM33C-9304 in filter R on MJD  58375.140
----
58420.10 16.22± 0.05BM33C-9304 in filter V on MJD  58420.100
16.07± 0.06BM33C-9304 in filter B on MJD  58420.100
---- 16.24± 0.07BM33C-9304 in filter I on MJD  58420.100
58433.00 16.30± 0.05BM33C-9304 in filter V on MJD  58433.000
---- 16.20± 0.05BM33C-9304 in filter R on MJD  58433.000
16.25± 0.06BM33C-9304 in filter I on MJD  58433.000
58672.39 16.21± 0.07BM33C-9304 in filter V on MJD  58672.390
---- 16.16± 0.06BM33C-9304 in filter R on MJD  58672.390
16.28± 0.08BM33C-9304 in filter I on MJD  58672.390
58695.36 16.31± 0.05BM33C-9304 in filter V on MJD  58695.360
16.18± 0.05BM33C-9304 in filter B on MJD  58695.360
16.25± 0.04BM33C-9304 in filter R on MJD  58695.360
----
58784.12 16.34± 0.06BM33C-9304 in filter V on MJD  58784.120
16.21± 0.06BM33C-9304 in filter B on MJD  58784.120
--------
58812.22 16.19± 0.05BM33C-9304 in filter V on MJD  58812.220
-------- 16.23± 0.05BM33C-9304 in filter I on MJD  58812.220
58902.06 16.26± 0.04ABM33C-9304 in filter V on MJD  58902.060
M33C-9304 in filter V on MJD  58902.060
---- 16.17± 0.04BM33C-9304 in filter R on MJD  58902.060
16.16± 0.08BM33C-9304 in filter I on MJD  58902.060
59056.38 16.24± 0.04BM33C-9304 in filter V on MJD  59056.380
16.16± 0.06BM33C-9304 in filter B on MJD  59056.380
16.04± 0.05BM33C-9304 in filter R on MJD  59056.380
16.17± 0.07BM33C-9304 in filter I on MJD  59056.380
59059.39 16.30± 0.06ABM33C-9304 in filter V on MJD  59059.390
M33C-9304 in filter V on MJD  59059.390
16.09± 0.06BM33C-9304 in filter B on MJD  59059.390
16.27± 0.05BM33C-9304 in filter R on MJD  59059.390
16.41± 0.08BM33C-9304 in filter I on MJD  59059.390
59081.28 16.31± 0.05ABM33C-9304 in filter V on MJD  59081.280
M33C-9304 in filter V on MJD  59081.280
16.20± 0.04BM33C-9304 in filter B on MJD  59081.280
16.19± 0.05BM33C-9304 in filter R on MJD  59081.280
----
59082.32 16.24± 0.03BM33C-9304 in filter V on MJD  59082.320
16.15± 0.03BM33C-9304 in filter B on MJD  59082.320
M33C-9304 in filter B on MJD  59082.320
16.16± 0.05BM33C-9304 in filter R on MJD  59082.320
M33C-9304 in filter R on MJD  59082.320
----
59084.34-------- 16.16± 0.05TBM33C-9304 in filter R on MJD  59084.340
----
59161.09 16.28± 0.04ABM33C-9304 in filter V on MJD  59161.090
M33C-9304 in filter V on MJD  59161.090
16.20± 0.05ABM33C-9304 in filter B on MJD  59161.090
M33C-9304 in filter B on MJD  59161.090
16.20± 0.05ABM33C-9304 in filter R on MJD  59161.090
M33C-9304 in filter R on MJD  59161.090
----
59171.11 16.20± 0.04ABM33C-9304 in filter V on MJD  59171.110
M33C-9304 in filter V on MJD  59171.110
16.16± 0.03BM33C-9304 in filter B on MJD  59171.110
---- 16.25± 0.07ABM33C-9304 in filter I on MJD  59171.110
M33C-9304 in filter I on MJD  59171.110
59227.09 16.23± 0.04ABM33C-9304 in filter V on MJD  59227.090
M33C-9304 in filter V on MJD  59227.090
16.14± 0.04ABM33C-9304 in filter B on MJD  59227.090
M33C-9304 in filter B on MJD  59227.090
16.18± 0.05BM33C-9304 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-9304Plot of color for M33C-9304

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 [0.18 mag]B [0.21 mag]R [0.26 mag]
B [0.18 mag]0.49 (27)
R [0.26 mag]0.32 (25)0.04 (19)
I [0.25 mag]0.25 (15)0.03 (9)0.61 (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-9304

Plot to assess correlation between bands for M33C-9304

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)
0.75 | 0.71
R
(I|R)
0.62 | 1.380.15 | 0.69
I
(I|R)
0.33 | 1.17-0.14 | 1.160.88 | 1.26

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