Color composite thumbnail image of M33C-20109M33C-20109 (J013427.11+304559.8)



Target Notes

Color composite thumbnail image of M33C-20109

Classification: Fe_emission

(Candidate LBV) Unresolved from J013427.26+304600.1 and J013427.19+304558.6 about 1.6 arcseconds to E that are combined about 1 magnitude fainter. ***Updated 180524***

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
56140.37 18.12± 0.07BM33C-20109 in filter V on MJD  56140.370
---- 17.68± 0.15BM33C-20109 in filter R on MJD  56140.370
----
56599.17 18.05± 0.06BM33C-20109 in filter V on MJD  56599.170
18.31± 0.07BM33C-20109 in filter B on MJD  56599.170
17.74± 0.06BM33C-20109 in filter R on MJD  56599.170
----
56976.16 17.96± 0.05BM33C-20109 in filter V on MJD  56976.160
18.17± 0.07BM33C-20109 in filter B on MJD  56976.160
17.57± 0.05BM33C-20109 in filter R on MJD  56976.160
----
57038.13 18.09± 0.05BM33C-20109 in filter V on MJD  57038.130
18.31± 0.06BM33C-20109 in filter B on MJD  57038.130
17.68± 0.05BM33C-20109 in filter R on MJD  57038.130
----
57310.13 17.93± 0.07BM33C-20109 in filter V on MJD  57310.130
18.08± 0.08BM33C-20109 in filter B on MJD  57310.130
18.23± 0.08XM33C-20109 in filter R on MJD  57310.130
----
57335.18 18.02± 0.06BM33C-20109 in filter V on MJD  57335.180
---- 17.65± 0.05BM33C-20109 in filter R on MJD  57335.180
----
57401.10 17.98± 0.05BM33C-20109 in filter V on MJD  57401.100
18.18± 0.06BM33C-20109 in filter B on MJD  57401.100
--------
57634.34 18.03± 0.06BM33C-20109 in filter V on MJD  57634.340
18.18± 0.08BM33C-20109 in filter B on MJD  57634.340
17.68± 0.06BM33C-20109 in filter R on MJD  57634.340
17.16± 0.06BM33C-20109 in filter I on MJD  57634.340
57687.13 18.05± 0.05BM33C-20109 in filter V on MJD  57687.130
18.11± 0.07BM33C-20109 in filter B on MJD  57687.130
17.64± 0.06BM33C-20109 in filter R on MJD  57687.130
17.13± 0.07BM33C-20109 in filter I on MJD  57687.130
57964.37 17.93± 0.04BM33C-20109 in filter V on MJD  57964.370
18.14± 0.06BM33C-20109 in filter B on MJD  57964.370
17.61± 0.05BM33C-20109 in filter R on MJD  57964.370
17.26± 0.07BM33C-20109 in filter I on MJD  57964.370
58045.15 18.04± 0.06BM33C-20109 in filter V on MJD  58045.150
18.21± 0.07BM33C-20109 in filter B on MJD  58045.150
17.72± 0.06BM33C-20109 in filter R on MJD  58045.150
----
58073.19 17.97± 0.05ABM33C-20109 in filter V on MJD  58073.190
M33C-20109 in filter V on MJD  58073.190
18.06± 0.07ABM33C-20109 in filter B on MJD  58073.190
M33C-20109 in filter B on MJD  58073.190
--------
58103.16 18.04± 0.06ABM33C-20109 in filter V on MJD  58103.160
M33C-20109 in filter V on MJD  58103.160
-------- 17.37± 0.08BM33C-20109 in filter I on MJD  58103.160
58108.11 17.97± 0.06BM33C-20109 in filter V on MJD  58108.110
18.12± 0.09BM33C-20109 in filter B on MJD  58108.110
---- 16.86± 0.10BM33C-20109 in filter I on MJD  58108.110
58312.39 18.05± 0.06BM33C-20109 in filter V on MJD  58312.390
17.93± 0.10BM33C-20109 in filter B on MJD  58312.390
--------
58316.38 18.09± 0.07BM33C-20109 in filter V on MJD  58316.380
18.21± 0.06BM33C-20109 in filter B on MJD  58316.380
17.65± 0.04BM33C-20109 in filter R on MJD  58316.380
17.10± 0.05BM33C-20109 in filter I on MJD  58316.380
58317.38 18.06± 0.05ABM33C-20109 in filter V on MJD  58317.380
M33C-20109 in filter V on MJD  58317.380
18.14± 0.07BM33C-20109 in filter B on MJD  58317.380
M33C-20109 in filter B on MJD  58317.380
17.76± 0.06ABM33C-20109 in filter R on MJD  58317.380
M33C-20109 in filter R on MJD  58317.380
M33C-20109 in filter R on MJD  58317.380
----
58341.38 18.13± 0.07ABM33C-20109 in filter V on MJD  58341.380
M33C-20109 in filter V on MJD  58341.380
18.27± 0.08BM33C-20109 in filter B on MJD  58341.380
17.79± 0.08BM33C-20109 in filter R on MJD  58341.380
17.34± 0.09ABM33C-20109 in filter I on MJD  58341.380
M33C-20109 in filter I on MJD  58341.380
58342.38 18.02± 0.05ABM33C-20109 in filter V on MJD  58342.380
M33C-20109 in filter V on MJD  58342.380
18.15± 0.07ABM33C-20109 in filter B on MJD  58342.380
M33C-20109 in filter B on MJD  58342.380
M33C-20109 in filter B on MJD  58342.380
17.65± 0.05ABM33C-20109 in filter R on MJD  58342.380
M33C-20109 in filter R on MJD  58342.380
M33C-20109 in filter R on MJD  58342.380
17.17± 0.06BM33C-20109 in filter I on MJD  58342.380
M33C-20109 in filter I on MJD  58342.380
M33C-20109 in filter I on MJD  58342.380
58375.14 17.98± 0.06BM33C-20109 in filter V on MJD  58375.140
---- 17.68± 0.05BM33C-20109 in filter R on MJD  58375.140
----
58420.06 17.92± 0.04BM33C-20109 in filter V on MJD  58420.060
18.19± 0.07BM33C-20109 in filter B on MJD  58420.060
17.59± 0.05BM33C-20109 in filter R on MJD  58420.060
17.20± 0.07BM33C-20109 in filter I on MJD  58420.060
58433.00 17.93± 0.07BM33C-20109 in filter V on MJD  58433.000
---- 17.74± 0.06BM33C-20109 in filter R on MJD  58433.000
17.24± 0.08BM33C-20109 in filter I on MJD  58433.000
58672.39 18.12± 0.10BM33C-20109 in filter V on MJD  58672.390
---- 17.70± 0.07BM33C-20109 in filter R on MJD  58672.390
> 18.05XM33C-20109 in filter I on MJD  58672.390
58695.36 18.15± 0.06BM33C-20109 in filter V on MJD  58695.360
18.25± 0.06BM33C-20109 in filter B on MJD  58695.360
17.73± 0.05BM33C-20109 in filter R on MJD  58695.360
----
58696.39 18.10± 0.05BM33C-20109 in filter V on MJD  58696.390
18.26± 0.07BM33C-20109 in filter B on MJD  58696.390
M33C-20109 in filter B on MJD  58696.390
17.79± 0.05BM33C-20109 in filter R on MJD  58696.390
M33C-20109 in filter R on MJD  58696.390
----
58779.15 17.91± 0.06BM33C-20109 in filter V on MJD  58779.150
---- 17.61± 0.07BM33C-20109 in filter R on MJD  58779.150
17.31± 0.09BM33C-20109 in filter I on MJD  58779.150
58784.12 18.07± 0.06BM33C-20109 in filter V on MJD  58784.120
18.26± 0.06BM33C-20109 in filter B on MJD  58784.120
--------
58812.22 18.03± 0.05BM33C-20109 in filter V on MJD  58812.220
-------- 17.18± 0.06BM33C-20109 in filter I on MJD  58812.220
58902.06 18.01± 0.04ABM33C-20109 in filter V on MJD  58902.060
M33C-20109 in filter V on MJD  58902.060
---- 17.62± 0.05BM33C-20109 in filter R on MJD  58902.060
16.94± 0.08BM33C-20109 in filter I on MJD  58902.060
59056.38 18.11± 0.05BM33C-20109 in filter V on MJD  59056.380
18.27± 0.06BM33C-20109 in filter B on MJD  59056.380
17.68± 0.06BM33C-20109 in filter R on MJD  59056.380
17.15± 0.08BM33C-20109 in filter I on MJD  59056.380
59059.38 18.04± 0.05BM33C-20109 in filter V on MJD  59059.380
18.18± 0.06BM33C-20109 in filter B on MJD  59059.380
--------
59081.30 18.11± 0.05ABM33C-20109 in filter V on MJD  59081.300
M33C-20109 in filter V on MJD  59081.300
18.21± 0.06BM33C-20109 in filter B on MJD  59081.300
17.75± 0.05ABM33C-20109 in filter R on MJD  59081.300
M33C-20109 in filter R on MJD  59081.300
----
59082.35 18.02± 0.05BM33C-20109 in filter V on MJD  59082.350
18.23± 0.07BM33C-20109 in filter B on MJD  59082.350
M33C-20109 in filter B on MJD  59082.350
17.70± 0.06BM33C-20109 in filter R on MJD  59082.350
M33C-20109 in filter R on MJD  59082.350
M33C-20109 in filter R on MJD  59082.350
----
59084.34-------- 17.70± 0.05TBM33C-20109 in filter R on MJD  59084.340
----
59161.07 18.09± 0.08BM33C-20109 in filter V on MJD  59161.070
18.14± 0.07BM33C-20109 in filter B on MJD  59161.070
17.66± 0.05BM33C-20109 in filter R on MJD  59161.070
----
59171.08 18.02± 0.07ABM33C-20109 in filter V on MJD  59171.080
M33C-20109 in filter V on MJD  59171.080
18.11± 0.07BM33C-20109 in filter B on MJD  59171.080
17.74± 0.07BM33C-20109 in filter R on MJD  59171.080
17.08± 0.07ABM33C-20109 in filter I on MJD  59171.080
M33C-20109 in filter I on MJD  59171.080
59227.07 18.01± 0.05ABM33C-20109 in filter V on MJD  59227.070
M33C-20109 in filter V on MJD  59227.070
18.21± 0.06ABM33C-20109 in filter B on MJD  59227.070
M33C-20109 in filter B on MJD  59227.070
17.68± 0.06ABM33C-20109 in filter R on MJD  59227.070
M33C-20109 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-20109Plot of color for M33C-20109

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 [0.38 mag]B [0.24 mag]R [0.22 mag]
B [0.38 mag]0.21 (27)
R [0.22 mag]0.32 (27)0.14 (20)
I [0.51 mag]0.00 (15)0.25 (10)0.05 (12)

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-20109

Plot to assess correlation between bands for M33C-20109

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)
0.64 | 0.94
R
(I|R)
0.85 | 1.220.46 | 0.08
I
(I|R)
-0.22 | 0.810.38 | 0.670.17 | 0.75

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