Color composite thumbnail image of M33C-14430M33C-14430 (J013358.74+304004.3)



Target Notes

Color composite thumbnail image of M33C-14430

Classification: OB-Supergiant

Surrounded by brighter stars several arcseconds away and many LGGS stars >3 magnitudes fainter within 4 arcseconds. When the PSF fit is outside the normal acceptable range the photometry is rejected (if a good alternated on the same night) -or- flagged "X" if there is no alternate on same night. Much more confusion in I-band. ***Updated 180518***

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 19.03± 0.11TAbM33C-14430 in filter V on MJD  56140.380
M33C-14430 in filter V on MJD  56140.380
----> 18.26-M33C-14430 in filter R on MJD  56140.380
M33C-14430 in filter R on MJD  56140.380
----
56593.16 18.97± 0.07bM33C-14430 in filter V on MJD  56593.160
19.08± 0.08bM33C-14430 in filter B on MJD  56593.160
--------
56599.18 18.98± 0.08bM33C-14430 in filter V on MJD  56599.180
19.14± 0.10bM33C-14430 in filter B on MJD  56599.180
18.83± 0.10XM33C-14430 in filter R on MJD  56599.180
M33C-14430 in filter R on MJD  56599.180
----
56976.18 19.10± 0.10XM33C-14430 in filter V on MJD  56976.180
M33C-14430 in filter V on MJD  56976.180
19.20± 0.11AbM33C-14430 in filter B on MJD  56976.180
M33C-14430 in filter B on MJD  56976.180
18.95± 0.11BM33C-14430 in filter R on MJD  56976.180
----
57038.13 19.07± 0.06bM33C-14430 in filter V on MJD  57038.130
18.88± 0.07bM33C-14430 in filter B on MJD  57038.130
18.76± 0.07XM33C-14430 in filter R on MJD  57038.130
----
57310.13 19.07± 0.16XM33C-14430 in filter V on MJD  57310.130
18.81± 0.11XM33C-14430 in filter B on MJD  57310.130
20.04± 0.28XM33C-14430 in filter R on MJD  57310.130
----
57328.16 19.03± 0.06bM33C-14430 in filter V on MJD  57328.160
19.09± 0.07bM33C-14430 in filter B on MJD  57328.160
18.78± 0.07BM33C-14430 in filter R on MJD  57328.160
----
57335.18 19.13± 0.09bM33C-14430 in filter V on MJD  57335.180
---- 19.09± 0.10XM33C-14430 in filter R on MJD  57335.180
----
57401.10 19.17± 0.10bM33C-14430 in filter V on MJD  57401.100
19.12± 0.10bM33C-14430 in filter B on MJD  57401.100
--------
57406.10>17.890bM33C-14430 in filter V on MJD  57406.100
> 18.09bM33C-14430 in filter B on MJD  57406.100
19.03± 0.17XM33C-14430 in filter R on MJD  57406.100
18.62± 0.28XM33C-14430 in filter I on MJD  57406.100
57634.35 18.97± 0.08AbM33C-14430 in filter V on MJD  57634.350
M33C-14430 in filter V on MJD  57634.350
19.02± 0.08AbM33C-14430 in filter B on MJD  57634.350
M33C-14430 in filter B on MJD  57634.350
18.88± 0.09ABM33C-14430 in filter R on MJD  57634.350
M33C-14430 in filter R on MJD  57634.350
19.25± 0.20XM33C-14430 in filter I on MJD  57634.350
57687.13 19.19± 0.11bM33C-14430 in filter V on MJD  57687.130
18.95± 0.10bM33C-14430 in filter B on MJD  57687.130
18.73± 0.08BM33C-14430 in filter R on MJD  57687.130
19.25± 0.23XM33C-14430 in filter I on MJD  57687.130
57964.36 19.13± 0.07bM33C-14430 in filter V on MJD  57964.360
19.07± 0.09bM33C-14430 in filter B on MJD  57964.360
19.02± 0.09ABM33C-14430 in filter R on MJD  57964.360
M33C-14430 in filter R on MJD  57964.360
19.76± 0.37-M33C-14430 in filter I on MJD  57964.360
M33C-14430 in filter I on MJD  57964.360
57988.41 19.12± 0.07bM33C-14430 in filter V on MJD  57988.410
19.08± 0.08bM33C-14430 in filter B on MJD  57988.410
--------
58043.10 19.21± 0.10bM33C-14430 in filter V on MJD  58043.100
---- 18.63± 0.08BM33C-14430 in filter R on MJD  58043.100
> 18.38-M33C-14430 in filter I on MJD  58043.100
58045.16 19.01± 0.11AbM33C-14430 in filter V on MJD  58045.160
M33C-14430 in filter V on MJD  58045.160
19.07± 0.10bM33C-14430 in filter B on MJD  58045.160
18.62± 0.08BM33C-14430 in filter R on MJD  58045.160
----
58073.20 18.80± 0.08bM33C-14430 in filter V on MJD  58073.200
18.80± 0.09bM33C-14430 in filter B on MJD  58073.200
--------
58103.16 19.24± 0.11AbM33C-14430 in filter V on MJD  58103.160
M33C-14430 in filter V on MJD  58103.160
M33C-14430 in filter V on MJD  58103.160
19.14± 0.08bM33C-14430 in filter B on MJD  58103.160
----> 18.13-M33C-14430 in filter I on MJD  58103.160
58108.13 18.98± 0.09AbM33C-14430 in filter V on MJD  58108.130
M33C-14430 in filter V on MJD  58108.130
19.00± 0.10AbM33C-14430 in filter B on MJD  58108.130
M33C-14430 in filter B on MJD  58108.130
---- 18.55± 0.13-M33C-14430 in filter I on MJD  58108.130
M33C-14430 in filter I on MJD  58108.130
58312.39 19.12± 0.10bM33C-14430 in filter V on MJD  58312.390
19.43± 0.29XM33C-14430 in filter B on MJD  58312.390
--------
58316.38 18.85± 0.07bM33C-14430 in filter V on MJD  58316.380
18.89± 0.09bM33C-14430 in filter B on MJD  58316.380
18.69± 0.06BM33C-14430 in filter R on MJD  58316.380
18.95± 0.18XM33C-14430 in filter I on MJD  58316.380
58317.37 18.87± 0.10bM33C-14430 in filter V on MJD  58317.370
18.88± 0.08bM33C-14430 in filter B on MJD  58317.370
M33C-14430 in filter B on MJD  58317.370
18.78± 0.07BM33C-14430 in filter R on MJD  58317.370
M33C-14430 in filter R on MJD  58317.370
----
58341.34 18.95± 0.10bM33C-14430 in filter V on MJD  58341.340
-------- 18.80± 0.14-M33C-14430 in filter I on MJD  58341.340
58342.38 19.06± 0.13AbM33C-14430 in filter V on MJD  58342.380
M33C-14430 in filter V on MJD  58342.380
18.94± 0.13AbM33C-14430 in filter B on MJD  58342.380
M33C-14430 in filter B on MJD  58342.380
19.40± 0.17AXM33C-14430 in filter R on MJD  58342.380
M33C-14430 in filter R on MJD  58342.380
19.12± 0.20AM33C-14430 in filter I on MJD  58342.380
M33C-14430 in filter I on MJD  58342.380
58375.14 19.17± 0.12bM33C-14430 in filter V on MJD  58375.140
---- 19.00± 0.12XM33C-14430 in filter R on MJD  58375.140
----
58420.08 19.14± 0.12AbM33C-14430 in filter V on MJD  58420.080
M33C-14430 in filter V on MJD  58420.080
19.05± 0.10AbM33C-14430 in filter B on MJD  58420.080
M33C-14430 in filter B on MJD  58420.080
> 19.34-M33C-14430 in filter R on MJD  58420.080
> 18.36-M33C-14430 in filter I on MJD  58420.080
M33C-14430 in filter I on MJD  58420.080
58433.00 19.20± 0.17bM33C-14430 in filter V on MJD  58433.000
---- 19.52± 0.18BM33C-14430 in filter R on MJD  58433.000
> 18.32-M33C-14430 in filter I on MJD  58433.000
58672.39 19.49± 0.25bM33C-14430 in filter V on MJD  58672.390
---- 19.49± 0.17BM33C-14430 in filter R on MJD  58672.390
> 18.05-M33C-14430 in filter I on MJD  58672.390
58673.38 19.01± 0.06bM33C-14430 in filter V on MJD  58673.380
19.09± 0.08bM33C-14430 in filter B on MJD  58673.380
--------
58695.36 19.00± 0.07bM33C-14430 in filter V on MJD  58695.360
18.99± 0.07bM33C-14430 in filter B on MJD  58695.360
18.91± 0.06BM33C-14430 in filter R on MJD  58695.360
----
58779.18 19.42± 0.13TbM33C-14430 in filter V on MJD  58779.180
> 19.03-M33C-14430 in filter B on MJD  58779.180
--------
58784.12 19.01± 0.07bM33C-14430 in filter V on MJD  58784.120
18.93± 0.07bM33C-14430 in filter B on MJD  58784.120
--------
58812.22 18.93± 0.08TbM33C-14430 in filter V on MJD  58812.220
--------> 18.45-M33C-14430 in filter I on MJD  58812.220
58902.06 19.03± 0.07AbM33C-14430 in filter V on MJD  58902.060
M33C-14430 in filter V on MJD  58902.060
---- 18.91± 0.08BM33C-14430 in filter R on MJD  58902.060
19.26± 0.52XM33C-14430 in filter I on MJD  58902.060
59056.38 19.07± 0.07bM33C-14430 in filter V on MJD  59056.380
19.19± 0.08bM33C-14430 in filter B on MJD  59056.380
18.84± 0.07BM33C-14430 in filter R on MJD  59056.380
18.53± 0.12-M33C-14430 in filter I on MJD  59056.380
59059.38 19.03± 0.07bM33C-14430 in filter V on MJD  59059.380
19.05± 0.08bM33C-14430 in filter B on MJD  59059.380
--------
59081.30 19.10± 0.08AbM33C-14430 in filter V on MJD  59081.300
M33C-14430 in filter V on MJD  59081.300
19.02± 0.07bM33C-14430 in filter B on MJD  59081.300
18.98± 0.07ABM33C-14430 in filter R on MJD  59081.300
M33C-14430 in filter R on MJD  59081.300
----
59082.34 19.12± 0.07AbM33C-14430 in filter V on MJD  59082.340
M33C-14430 in filter V on MJD  59082.340
19.08± 0.07AbM33C-14430 in filter B on MJD  59082.340
M33C-14430 in filter B on MJD  59082.340
M33C-14430 in filter B on MJD  59082.340
18.93± 0.07ABM33C-14430 in filter R on MJD  59082.340
M33C-14430 in filter R on MJD  59082.340
M33C-14430 in filter R on MJD  59082.340
M33C-14430 in filter R on MJD  59082.340
----
59084.29-------- 18.87± 0.07TBM33C-14430 in filter R on MJD  59084.290
----
59161.09 18.89± 0.07AbM33C-14430 in filter V on MJD  59161.090
M33C-14430 in filter V on MJD  59161.090
18.96± 0.07AbM33C-14430 in filter B on MJD  59161.090
M33C-14430 in filter B on MJD  59161.090
18.78± 0.07ABM33C-14430 in filter R on MJD  59161.090
M33C-14430 in filter R on MJD  59161.090
----
59171.09 19.11± 0.09AbM33C-14430 in filter V on MJD  59171.090
M33C-14430 in filter V on MJD  59171.090
M33C-14430 in filter V on MJD  59171.090
18.90± 0.08AbM33C-14430 in filter B on MJD  59171.090
M33C-14430 in filter B on MJD  59171.090
> 19.32-M33C-14430 in filter R on MJD  59171.090
18.72± 0.16AM33C-14430 in filter I on MJD  59171.090
M33C-14430 in filter I on MJD  59171.090
M33C-14430 in filter I on MJD  59171.090
59227.09 19.10± 0.07AbM33C-14430 in filter V on MJD  59227.090
M33C-14430 in filter V on MJD  59227.090
19.09± 0.07AbM33C-14430 in filter B on MJD  59227.090
M33C-14430 in filter B on MJD  59227.090
18.88± 0.07BM33C-14430 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-14430Plot of color for M33C-14430

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 [0.40 mag]B [0.69 mag]R [0.90 mag]
B [0.40 mag]0.28 (27)
R [0.90 mag]0.40 (17)0.17 (14)
I [0.00 mag]0.28 (6)0.00 (5)-.-- (2)

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-14430

Plot to assess correlation between bands for M33C-14430

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)
0.79 | 0.94
R
(I|R)
1.20 | 0.700.78 | 0.34
I
(I|R)
0.56 | 0.46-0.57 | 0.65--- | ----

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

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