Color composite thumbnail image of M33C-16364M33C-16364 (J013459.39+304201.2)



Target Notes

Color composite thumbnail image of M33C-16364

Classification: Of/late-WN

(Candidate LBV) 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 18.27± 0.07-M33C-16364 in filter V on MJD  56140.370
---- 18.38± 0.26-M33C-16364 in filter R on MJD  56140.370
----
56599.17 18.23± 0.06-M33C-16364 in filter V on MJD  56599.170
18.16± 0.07-M33C-16364 in filter B on MJD  56599.170
18.26± 0.06-M33C-16364 in filter R on MJD  56599.170
----
56976.16 18.23± 0.05-M33C-16364 in filter V on MJD  56976.160
18.15± 0.07-M33C-16364 in filter B on MJD  56976.160
18.27± 0.06-M33C-16364 in filter R on MJD  56976.160
----
57038.13 18.26± 0.05-M33C-16364 in filter V on MJD  57038.130
18.09± 0.05-M33C-16364 in filter B on MJD  57038.130
18.24± 0.05-M33C-16364 in filter R on MJD  57038.130
----
57310.13 18.36± 0.08-M33C-16364 in filter V on MJD  57310.130
18.05± 0.08-M33C-16364 in filter B on MJD  57310.130
18.33± 0.07-M33C-16364 in filter R on MJD  57310.130
----
57335.18 18.34± 0.06-M33C-16364 in filter V on MJD  57335.180
---- 18.26± 0.05-M33C-16364 in filter R on MJD  57335.180
----
57401.10 18.26± 0.05-M33C-16364 in filter V on MJD  57401.100
18.16± 0.06-M33C-16364 in filter B on MJD  57401.100
--------
57634.34 18.26± 0.06-M33C-16364 in filter V on MJD  57634.340
18.18± 0.08-M33C-16364 in filter B on MJD  57634.340
18.32± 0.06-M33C-16364 in filter R on MJD  57634.340
18.63± 0.10-M33C-16364 in filter I on MJD  57634.340
57687.13 18.30± 0.06-M33C-16364 in filter V on MJD  57687.130
18.10± 0.07-M33C-16364 in filter B on MJD  57687.130
18.23± 0.06-M33C-16364 in filter R on MJD  57687.130
18.64± 0.12-M33C-16364 in filter I on MJD  57687.130
57964.37 18.35± 0.05-M33C-16364 in filter V on MJD  57964.370
18.27± 0.06-M33C-16364 in filter B on MJD  57964.370
18.36± 0.05-M33C-16364 in filter R on MJD  57964.370
18.63± 0.10-M33C-16364 in filter I on MJD  57964.370
58045.16 18.19± 0.06AM33C-16364 in filter V on MJD  58045.160
M33C-16364 in filter V on MJD  58045.160
18.02± 0.07AM33C-16364 in filter B on MJD  58045.160
M33C-16364 in filter B on MJD  58045.160
18.18± 0.06AM33C-16364 in filter R on MJD  58045.160
M33C-16364 in filter R on MJD  58045.160
----
58073.18 18.29± 0.04-M33C-16364 in filter V on MJD  58073.180
18.09± 0.06-M33C-16364 in filter B on MJD  58073.180
--------
58103.16 18.23± 0.06AM33C-16364 in filter V on MJD  58103.160
M33C-16364 in filter V on MJD  58103.160
-------- 18.68± 0.14-M33C-16364 in filter I on MJD  58103.160
58316.38 18.34± 0.04-M33C-16364 in filter V on MJD  58316.380
18.15± 0.06-M33C-16364 in filter B on MJD  58316.380
18.29± 0.05-M33C-16364 in filter R on MJD  58316.380
18.59± 0.09-M33C-16364 in filter I on MJD  58316.380
58342.36 18.34± 0.05-M33C-16364 in filter V on MJD  58342.360
18.20± 0.07-M33C-16364 in filter B on MJD  58342.360
18.33± 0.05-M33C-16364 in filter R on MJD  58342.360
18.21± 0.08-M33C-16364 in filter I on MJD  58342.360
58420.06 18.27± 0.05-M33C-16364 in filter V on MJD  58420.060
18.11± 0.07-M33C-16364 in filter B on MJD  58420.060
18.23± 0.06-M33C-16364 in filter R on MJD  58420.060
18.46± 0.15-M33C-16364 in filter I on MJD  58420.060
58433.00 18.36± 0.09-M33C-16364 in filter V on MJD  58433.000
---- 18.26± 0.07-M33C-16364 in filter R on MJD  58433.000
> 18.32-M33C-16364 in filter I on MJD  58433.000
58672.39 18.39± 0.11-M33C-16364 in filter V on MJD  58672.390
---- 18.39± 0.08-M33C-16364 in filter R on MJD  58672.390
> 18.05-M33C-16364 in filter I on MJD  58672.390
58695.36 18.30± 0.05-M33C-16364 in filter V on MJD  58695.360
18.13± 0.06-M33C-16364 in filter B on MJD  58695.360
18.26± 0.05-M33C-16364 in filter R on MJD  58695.360
----
58784.12 18.34± 0.06-M33C-16364 in filter V on MJD  58784.120
18.14± 0.06-M33C-16364 in filter B on MJD  58784.120
--------
58812.22 18.27± 0.05-M33C-16364 in filter V on MJD  58812.220
-------- 18.22± 0.07-M33C-16364 in filter I on MJD  58812.220
58902.07 18.35± 0.05-M33C-16364 in filter V on MJD  58902.070
---- 18.25± 0.05-M33C-16364 in filter R on MJD  58902.070
----
59059.38 18.36± 0.05-M33C-16364 in filter V on MJD  59059.380
18.17± 0.06-M33C-16364 in filter B on MJD  59059.380
--------
59081.30 18.27± 0.05AM33C-16364 in filter V on MJD  59081.300
M33C-16364 in filter V on MJD  59081.300
18.20± 0.06-M33C-16364 in filter B on MJD  59081.300
18.26± 0.05AM33C-16364 in filter R on MJD  59081.300
M33C-16364 in filter R on MJD  59081.300
----
59084.34-------- 18.25± 0.04TM33C-16364 in filter R on MJD  59084.340
----
59161.07 18.33± 0.06-M33C-16364 in filter V on MJD  59161.070
18.17± 0.07-M33C-16364 in filter B on MJD  59161.070
18.28± 0.05-M33C-16364 in filter R on MJD  59161.070
----
59171.09 18.27± 0.05-M33C-16364 in filter V on MJD  59171.090
-------- 18.63± 0.10-M33C-16364 in filter I on MJD  59171.090
59227.08 18.28± 0.04-M33C-16364 in filter V on MJD  59227.080
18.24± 0.05-M33C-16364 in filter B on MJD  59227.080
18.30± 0.05-M33C-16364 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 M33C-16364Plot of color for M33C-16364

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 [0.24 mag]B [0.20 mag]R [0.21 mag]
B [0.24 mag]0.08 (19)
R [0.21 mag]0.26 (20)0.42 (15)
I [0.47 mag]0.02 (9)0.00 (6)0.01 (6)

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-16364

Plot to assess correlation between bands for M33C-16364

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)
0.26 | 0.95
R
(I|R)
0.38 | 1.170.56 | 0.35
I
(I|R)
-0.04 | 0.42-0.09 | 0.50-0.26 | 0.57

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