Color composite thumbnail image of M33-013429.64M33-013429.64 (J013429.64+303732.1)



Target Notes

Color composite thumbnail image of M33-013429.64

Classification: OB-Supergiant

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
56140.37 17.23± 0.06-M33-013429.64 in filter V on MJD  56140.370
---- 17.14± 0.10-M33-013429.64 in filter R on MJD  56140.370
----
56599.17 17.23± 0.05-M33-013429.64 in filter V on MJD  56599.170
17.25± 0.07-M33-013429.64 in filter B on MJD  56599.170
17.10± 0.06-M33-013429.64 in filter R on MJD  56599.170
----
56976.16 17.20± 0.04-M33-013429.64 in filter V on MJD  56976.160
17.25± 0.06-M33-013429.64 in filter B on MJD  56976.160
17.09± 0.05-M33-013429.64 in filter R on MJD  56976.160
----
57038.13 17.15± 0.04-M33-013429.64 in filter V on MJD  57038.130
17.18± 0.05-M33-013429.64 in filter B on MJD  57038.130
17.06± 0.04-M33-013429.64 in filter R on MJD  57038.130
----
57310.13 17.29± 0.06-M33-013429.64 in filter V on MJD  57310.130
17.31± 0.07-M33-013429.64 in filter B on MJD  57310.130
17.23± 0.05-M33-013429.64 in filter R on MJD  57310.130
----
57335.18 17.31± 0.06-M33-013429.64 in filter V on MJD  57335.180
---- 17.20± 0.05-M33-013429.64 in filter R on MJD  57335.180
----
57401.10 17.30± 0.05-M33-013429.64 in filter V on MJD  57401.100
17.26± 0.06-M33-013429.64 in filter B on MJD  57401.100
--------
57634.34 17.33± 0.05-M33-013429.64 in filter V on MJD  57634.340
17.32± 0.07-M33-013429.64 in filter B on MJD  57634.340
17.25± 0.05-M33-013429.64 in filter R on MJD  57634.340
17.18± 0.06-M33-013429.64 in filter I on MJD  57634.340
57687.13 17.30± 0.05-M33-013429.64 in filter V on MJD  57687.130
17.27± 0.06-M33-013429.64 in filter B on MJD  57687.130
17.19± 0.05-M33-013429.64 in filter R on MJD  57687.130
17.22± 0.07-M33-013429.64 in filter I on MJD  57687.130
57964.35 17.24± 0.04AM33-013429.64 in filter V on MJD  57964.350
M33-013429.64 in filter V on MJD  57964.350
17.25± 0.06AM33-013429.64 in filter B on MJD  57964.350
M33-013429.64 in filter B on MJD  57964.350
17.11± 0.05AM33-013429.64 in filter R on MJD  57964.350
M33-013429.64 in filter R on MJD  57964.350
16.99± 0.06AM33-013429.64 in filter I on MJD  57964.350
M33-013429.64 in filter I on MJD  57964.350
58045.16 17.42± 0.05AM33-013429.64 in filter V on MJD  58045.160
M33-013429.64 in filter V on MJD  58045.160
17.44± 0.07AM33-013429.64 in filter B on MJD  58045.160
M33-013429.64 in filter B on MJD  58045.160
17.29± 0.05AM33-013429.64 in filter R on MJD  58045.160
M33-013429.64 in filter R on MJD  58045.160
----
58073.19 17.28± 0.04AM33-013429.64 in filter V on MJD  58073.190
M33-013429.64 in filter V on MJD  58073.190
17.27± 0.06AM33-013429.64 in filter B on MJD  58073.190
M33-013429.64 in filter B on MJD  58073.190
--------
58103.16 17.25± 0.04AM33-013429.64 in filter V on MJD  58103.160
M33-013429.64 in filter V on MJD  58103.160
-------- 17.08± 0.07-M33-013429.64 in filter I on MJD  58103.160
58108.11 17.18± 0.05-M33-013429.64 in filter V on MJD  58108.110
17.20± 0.08-M33-013429.64 in filter B on MJD  58108.110
---- 16.77± 0.09-M33-013429.64 in filter I on MJD  58108.110
58312.39 17.06± 0.05-M33-013429.64 in filter V on MJD  58312.390
17.09± 0.07-M33-013429.64 in filter B on MJD  58312.390
--------
58316.38 17.16± 0.03-M33-013429.64 in filter V on MJD  58316.380
17.24± 0.05-M33-013429.64 in filter B on MJD  58316.380
17.02± 0.03-M33-013429.64 in filter R on MJD  58316.380
16.92± 0.04-M33-013429.64 in filter I on MJD  58316.380
58317.37 17.17± 0.04-M33-013429.64 in filter V on MJD  58317.370
17.16± 0.06-M33-013429.64 in filter B on MJD  58317.370
M33-013429.64 in filter B on MJD  58317.370
17.04± 0.04-M33-013429.64 in filter R on MJD  58317.370
M33-013429.64 in filter R on MJD  58317.370
----
58341.34 17.23± 0.07-M33-013429.64 in filter V on MJD  58341.340
-------- 17.05± 0.07-M33-013429.64 in filter I on MJD  58341.340
58342.38 17.28± 0.04AM33-013429.64 in filter V on MJD  58342.380
M33-013429.64 in filter V on MJD  58342.380
17.32± 0.06AM33-013429.64 in filter B on MJD  58342.380
M33-013429.64 in filter B on MJD  58342.380
17.18± 0.04AM33-013429.64 in filter R on MJD  58342.380
M33-013429.64 in filter R on MJD  58342.380
17.07± 0.05-M33-013429.64 in filter I on MJD  58342.380
M33-013429.64 in filter I on MJD  58342.380
58375.14 17.35± 0.05-M33-013429.64 in filter V on MJD  58375.140
---- 17.21± 0.05-M33-013429.64 in filter R on MJD  58375.140
----
58420.08 17.21± 0.04AM33-013429.64 in filter V on MJD  58420.080
M33-013429.64 in filter V on MJD  58420.080
17.25± 0.06AM33-013429.64 in filter B on MJD  58420.080
M33-013429.64 in filter B on MJD  58420.080
17.13± 0.04-M33-013429.64 in filter R on MJD  58420.080
17.00± 0.07AM33-013429.64 in filter I on MJD  58420.080
M33-013429.64 in filter I on MJD  58420.080
58433.00 17.25± 0.05-M33-013429.64 in filter V on MJD  58433.000
---- 17.13± 0.05-M33-013429.64 in filter R on MJD  58433.000
17.21± 0.07-M33-013429.64 in filter I on MJD  58433.000
58672.39 17.37± 0.07-M33-013429.64 in filter V on MJD  58672.390
---- 17.29± 0.06-M33-013429.64 in filter R on MJD  58672.390
17.05± 0.10-M33-013429.64 in filter I on MJD  58672.390
58695.36 17.18± 0.05-M33-013429.64 in filter V on MJD  58695.360
17.18± 0.05-M33-013429.64 in filter B on MJD  58695.360
17.07± 0.04-M33-013429.64 in filter R on MJD  58695.360
----
58784.12 17.21± 0.05-M33-013429.64 in filter V on MJD  58784.120
17.19± 0.06-M33-013429.64 in filter B on MJD  58784.120
--------
58812.22 17.21± 0.04-M33-013429.64 in filter V on MJD  58812.220
-------- 17.03± 0.06-M33-013429.64 in filter I on MJD  58812.220
58902.07 17.21± 0.04-M33-013429.64 in filter V on MJD  58902.070
---- 17.12± 0.04-M33-013429.64 in filter R on MJD  58902.070
----
59059.38 17.16± 0.05-M33-013429.64 in filter V on MJD  59059.380
17.18± 0.06-M33-013429.64 in filter B on MJD  59059.380
--------
59081.30 17.20± 0.04AM33-013429.64 in filter V on MJD  59081.300
M33-013429.64 in filter V on MJD  59081.300
17.19± 0.06-M33-013429.64 in filter B on MJD  59081.300
17.09± 0.04AM33-013429.64 in filter R on MJD  59081.300
M33-013429.64 in filter R on MJD  59081.300
----
59084.34-------- 17.07± 0.04TM33-013429.64 in filter R on MJD  59084.340
----
59161.07 17.19± 0.05-M33-013429.64 in filter V on MJD  59161.070
17.20± 0.06-M33-013429.64 in filter B on MJD  59161.070
17.08± 0.04-M33-013429.64 in filter R on MJD  59161.070
----
59171.09 17.23± 0.04-M33-013429.64 in filter V on MJD  59171.090
-------- 16.85± 0.06-M33-013429.64 in filter I on MJD  59171.090
59227.08 17.13± 0.04-M33-013429.64 in filter V on MJD  59227.080
17.15± 0.04-M33-013429.64 in filter B on MJD  59227.080
17.03± 0.04-M33-013429.64 in filter R on MJD  59227.080
----
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 M33-013429.64Plot of color for M33-013429.64

Key for Plot Variability Photometry Table Target Notes


Variability

Plot/Graph Photometry Table Target Notes

It is very likely that 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 [0.36 mag]B [0.36 mag]R [0.27 mag]
B [0.36 mag]0.87 (22)
R [0.27 mag]0.94 (22)0.81 (16)
I [0.45 mag]0.42 (13)0.61 (7)0.27 (8)

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 M33-013429.64

Plot to assess correlation between bands for M33-013429.64

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)
1.74 | 0.72
R
(I|R)
2.59 | 0.921.67 | 0.33
I
(I|R)
1.69 | 0.621.04 | 0.282.45 | 0.93

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