Color composite thumbnail image of M33C-3109M33C-3109 (J013307.28+302835.2)



Target Notes

Color composite thumbnail image of M33C-3109

Classification: YSG

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
56140.40 18.67± 0.07-M33C-3109 in filter V on MJD  56140.400
---- 18.56± 0.22-M33C-3109 in filter R on MJD  56140.400
----
56599.22 18.85± 0.08-M33C-3109 in filter V on MJD  56599.220
19.09± 0.09-M33C-3109 in filter B on MJD  56599.220
18.43± 0.07-M33C-3109 in filter R on MJD  56599.220
----
57035.14 18.72± 0.09-M33C-3109 in filter V on MJD  57035.140
19.16± 0.13-M33C-3109 in filter B on MJD  57035.140
18.46± 0.08-M33C-3109 in filter R on MJD  57035.140
----
57310.16 18.86± 0.08-M33C-3109 in filter V on MJD  57310.160
19.02± 0.10-M33C-3109 in filter B on MJD  57310.160
18.53± 0.07-M33C-3109 in filter R on MJD  57310.160
----
57406.10 18.76± 0.14-M33C-3109 in filter V on MJD  57406.100
> 18.09-M33C-3109 in filter B on MJD  57406.100
18.59± 0.11-M33C-3109 in filter R on MJD  57406.100
18.02± 0.11-M33C-3109 in filter I on MJD  57406.100
57634.41 18.61± 0.07-M33C-3109 in filter V on MJD  57634.410
18.90± 0.09-M33C-3109 in filter B on MJD  57634.410
18.37± 0.08-M33C-3109 in filter R on MJD  57634.410
----
57638.40 18.74± 0.06AM33C-3109 in filter V on MJD  57638.400
M33C-3109 in filter V on MJD  57638.400
19.13± 0.06-M33C-3109 in filter B on MJD  57638.400
18.49± 0.05-M33C-3109 in filter R on MJD  57638.400
18.26± 0.10AM33C-3109 in filter I on MJD  57638.400
M33C-3109 in filter I on MJD  57638.400
57988.43 18.75± 0.07TM33C-3109 in filter V on MJD  57988.430
------------
58043.15 18.80± 0.06AM33C-3109 in filter V on MJD  58043.150
M33C-3109 in filter V on MJD  58043.150
19.13± 0.07AM33C-3109 in filter B on MJD  58043.150
M33C-3109 in filter B on MJD  58043.150
18.45± 0.06AM33C-3109 in filter R on MJD  58043.150
M33C-3109 in filter R on MJD  58043.150
18.12± 0.11-M33C-3109 in filter I on MJD  58043.150
58108.17 18.72± 0.07-M33C-3109 in filter V on MJD  58108.170
19.08± 0.07-M33C-3109 in filter B on MJD  58108.170
---- 18.18± 0.10-M33C-3109 in filter I on MJD  58108.170
58339.40 18.83± 0.06-M33C-3109 in filter V on MJD  58339.400
19.04± 0.09-M33C-3109 in filter B on MJD  58339.400
18.46± 0.06-M33C-3109 in filter R on MJD  58339.400
----
58375.16 18.60± 0.07-M33C-3109 in filter V on MJD  58375.160
-------- 18.12± 0.11-M33C-3109 in filter I on MJD  58375.160
58433.02 18.81± 0.08-M33C-3109 in filter V on MJD  58433.020
---- 18.57± 0.07-M33C-3109 in filter R on MJD  58433.020
18.46± 0.13-M33C-3109 in filter I on MJD  58433.020
58673.38 18.71± 0.05-M33C-3109 in filter V on MJD  58673.380
18.99± 0.07-M33C-3109 in filter B on MJD  58673.380
--------
58695.39 18.75± 0.06-M33C-3109 in filter V on MJD  58695.390
---- 18.50± 0.05-M33C-3109 in filter R on MJD  58695.390
----
58696.41 18.69± 0.06-M33C-3109 in filter V on MJD  58696.410
18.85± 0.10-M33C-3109 in filter B on MJD  58696.410
18.57± 0.12-M33C-3109 in filter R on MJD  58696.410
M33C-3109 in filter R on MJD  58696.410
----
58750.20 18.84± 0.05AM33C-3109 in filter V on MJD  58750.200
M33C-3109 in filter V on MJD  58750.200
19.17± 0.06-M33C-3109 in filter B on MJD  58750.200
18.48± 0.05-M33C-3109 in filter R on MJD  58750.200
18.17± 0.09-M33C-3109 in filter I on MJD  58750.200
58757.17 18.79± 0.07-M33C-3109 in filter V on MJD  58757.170
---- 18.59± 0.06-M33C-3109 in filter R on MJD  58757.170
----
58779.18 18.80± 0.07-M33C-3109 in filter V on MJD  58779.180
19.07± 0.07-M33C-3109 in filter B on MJD  58779.180
--------
58784.14 18.74± 0.06AM33C-3109 in filter V on MJD  58784.140
M33C-3109 in filter V on MJD  58784.140
---- 18.43± 0.05-M33C-3109 in filter R on MJD  58784.140
18.19± 0.09-M33C-3109 in filter I on MJD  58784.140
58812.20 18.74± 0.07-M33C-3109 in filter V on MJD  58812.200
---- 18.47± 0.07-M33C-3109 in filter R on MJD  58812.200
----
59059.40 18.73± 0.07-M33C-3109 in filter V on MJD  59059.400
---- 18.52± 0.06-M33C-3109 in filter R on MJD  59059.400
18.50± 0.20-M33C-3109 in filter I on MJD  59059.400
59081.34 18.73± 0.06AM33C-3109 in filter V on MJD  59081.340
M33C-3109 in filter V on MJD  59081.340
19.10± 0.06AM33C-3109 in filter B on MJD  59081.340
M33C-3109 in filter B on MJD  59081.340
18.51± 0.06AM33C-3109 in filter R on MJD  59081.340
M33C-3109 in filter R on MJD  59081.340
18.19± 0.09-M33C-3109 in filter I on MJD  59081.340
59082.38 18.72± 0.06-M33C-3109 in filter V on MJD  59082.380
19.12± 0.05-M33C-3109 in filter B on MJD  59082.380
M33C-3109 in filter B on MJD  59082.380
M33C-3109 in filter B on MJD  59082.380
18.50± 0.05-M33C-3109 in filter R on MJD  59082.380
M33C-3109 in filter R on MJD  59082.380
M33C-3109 in filter R on MJD  59082.380
----
59084.25-------- 18.47± 0.04TM33C-3109 in filter R on MJD  59084.250
----
59161.14 18.73± 0.06-M33C-3109 in filter V on MJD  59161.140
---- 18.43± 0.05-M33C-3109 in filter R on MJD  59161.140
18.16± 0.10-M33C-3109 in filter I on MJD  59161.140
59171.15 18.70± 0.06AM33C-3109 in filter V on MJD  59171.150
M33C-3109 in filter V on MJD  59171.150
19.00± 0.08AM33C-3109 in filter B on MJD  59171.150
M33C-3109 in filter B on MJD  59171.150
18.46± 0.05-M33C-3109 in filter R on MJD  59171.150
18.29± 0.09AM33C-3109 in filter I on MJD  59171.150
M33C-3109 in filter I on MJD  59171.150
59227.14 18.81± 0.06AM33C-3109 in filter V on MJD  59227.140
M33C-3109 in filter V on MJD  59227.140
19.15± 0.07AM33C-3109 in filter B on MJD  59227.140
M33C-3109 in filter B on MJD  59227.140
18.58± 0.06AM33C-3109 in filter R on MJD  59227.140
M33C-3109 in filter R on MJD  59227.140
18.43± 0.10-M33C-3109 in filter I on MJD  59227.140
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-3109Plot of color for M33C-3109

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 [0.32 mag]B [0.27 mag]R [0.23 mag]
B [0.32 mag]0.26 (16)
R [0.23 mag]0.05 (22)0.00 (13)
I [0.49 mag]0.05 (13)0.00 (7)0.10 (11)

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-3109

Plot to assess correlation between bands for M33C-3109

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)
0.66 | 0.90
R
(I|R)
0.20 | 1.080.23 | 0.09
I
(I|R)
0.23 | 0.74-0.06 | 0.750.51 | 0.74

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