Color composite thumbnail image of M33-013416.44M33-013416.44 (J013416.44+303120.8)



Target Notes

Color composite thumbnail image of M33-013416.44

Classification: OB-Supergiant

Resolved from J013416.71+303122.8 of comparable brightness 4 arcseconds NE.

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 17.17± 0.06-M33-013416.44 in filter V on MJD  56140.370
---- 16.91± 0.09-M33-013416.44 in filter R on MJD  56140.370
----
56599.17 17.27± 0.05-M33-013416.44 in filter V on MJD  56599.170
17.20± 0.07-M33-013416.44 in filter B on MJD  56599.170
17.14± 0.06-M33-013416.44 in filter R on MJD  56599.170
----
56976.16 17.15± 0.04-M33-013416.44 in filter V on MJD  56976.160
17.14± 0.06-M33-013416.44 in filter B on MJD  56976.160
17.03± 0.05-M33-013416.44 in filter R on MJD  56976.160
----
56982.22 17.08± 0.06-M33-013416.44 in filter V on MJD  56982.220
17.06± 0.06-M33-013416.44 in filter B on MJD  56982.220
16.96± 0.07-M33-013416.44 in filter R on MJD  56982.220
----
57038.13 17.23± 0.04-M33-013416.44 in filter V on MJD  57038.130
17.16± 0.05-M33-013416.44 in filter B on MJD  57038.130
17.12± 0.04-M33-013416.44 in filter R on MJD  57038.130
----
57310.13 17.04± 0.06XM33-013416.44 in filter V on MJD  57310.130
17.21± 0.07-M33-013416.44 in filter B on MJD  57310.130
17.10± 0.05-M33-013416.44 in filter R on MJD  57310.130
----
57328.19 17.25± 0.05-M33-013416.44 in filter V on MJD  57328.190
17.23± 0.07-M33-013416.44 in filter B on MJD  57328.190
17.11± 0.07-M33-013416.44 in filter R on MJD  57328.190
----
57335.18 17.22± 0.06-M33-013416.44 in filter V on MJD  57335.180
---- 17.19± 0.05-M33-013416.44 in filter R on MJD  57335.180
----
57401.10 17.27± 0.05-M33-013416.44 in filter V on MJD  57401.100
17.31± 0.06-M33-013416.44 in filter B on MJD  57401.100
--------
57406.10 17.30± 0.05-M33-013416.44 in filter V on MJD  57406.100
17.33± 0.06-M33-013416.44 in filter B on MJD  57406.100
17.18± 0.05-M33-013416.44 in filter R on MJD  57406.100
17.03± 0.08-M33-013416.44 in filter I on MJD  57406.100
57634.37 17.27± 0.06AM33-013416.44 in filter V on MJD  57634.370
M33-013416.44 in filter V on MJD  57634.370
17.23± 0.07AM33-013416.44 in filter B on MJD  57634.370
M33-013416.44 in filter B on MJD  57634.370
17.16± 0.07AM33-013416.44 in filter R on MJD  57634.370
M33-013416.44 in filter R on MJD  57634.370
17.19± 0.06-M33-013416.44 in filter I on MJD  57634.370
57638.43 17.29± 0.06-M33-013416.44 in filter V on MJD  57638.430
-------- 17.07± 0.10-M33-013416.44 in filter I on MJD  57638.430
57687.13 17.27± 0.05-M33-013416.44 in filter V on MJD  57687.130
17.28± 0.06-M33-013416.44 in filter B on MJD  57687.130
17.15± 0.05-M33-013416.44 in filter R on MJD  57687.130
17.06± 0.07-M33-013416.44 in filter I on MJD  57687.130
57964.33 17.35± 0.04-M33-013416.44 in filter V on MJD  57964.330
17.36± 0.07-M33-013416.44 in filter B on MJD  57964.330
17.25± 0.05-M33-013416.44 in filter R on MJD  57964.330
17.11± 0.07-M33-013416.44 in filter I on MJD  57964.330
58045.18 17.32± 0.05-M33-013416.44 in filter V on MJD  58045.180
17.31± 0.07-M33-013416.44 in filter B on MJD  58045.180
17.28± 0.06-M33-013416.44 in filter R on MJD  58045.180
----
58073.20 17.35± 0.05-M33-013416.44 in filter V on MJD  58073.200
17.29± 0.07-M33-013416.44 in filter B on MJD  58073.200
--------
58103.18 17.25± 0.05TM33-013416.44 in filter V on MJD  58103.180
------------
58108.11 17.17± 0.05-M33-013416.44 in filter V on MJD  58108.110
17.10± 0.08-M33-013416.44 in filter B on MJD  58108.110
---- 17.07± 0.09-M33-013416.44 in filter I on MJD  58108.110
58312.39 17.14± 0.05-M33-013416.44 in filter V on MJD  58312.390
17.11± 0.07-M33-013416.44 in filter B on MJD  58312.390
--------
58317.37 17.17± 0.04-M33-013416.44 in filter V on MJD  58317.370
17.16± 0.06-M33-013416.44 in filter B on MJD  58317.370
17.07± 0.04-M33-013416.44 in filter R on MJD  58317.370
----
58341.34 17.15± 0.07-M33-013416.44 in filter V on MJD  58341.340
-------- 16.95± 0.07-M33-013416.44 in filter I on MJD  58341.340
58342.40 17.25± 0.05-M33-013416.44 in filter V on MJD  58342.400
17.19± 0.06-M33-013416.44 in filter B on MJD  58342.400
17.18± 0.05-M33-013416.44 in filter R on MJD  58342.400
----
58375.14 17.25± 0.05-M33-013416.44 in filter V on MJD  58375.140
---- 17.16± 0.05-M33-013416.44 in filter R on MJD  58375.140
----
58420.10 17.38± 0.05-M33-013416.44 in filter V on MJD  58420.100
17.38± 0.06-M33-013416.44 in filter B on MJD  58420.100
---- 17.26± 0.08-M33-013416.44 in filter I on MJD  58420.100
58433.00 17.19± 0.05-M33-013416.44 in filter V on MJD  58433.000
---- 17.08± 0.06-M33-013416.44 in filter R on MJD  58433.000
16.84± 0.07-M33-013416.44 in filter I on MJD  58433.000
58672.39 17.18± 0.07-M33-013416.44 in filter V on MJD  58672.390
---- 17.02± 0.06-M33-013416.44 in filter R on MJD  58672.390
17.05± 0.12-M33-013416.44 in filter I on MJD  58672.390
58695.36 17.14± 0.05-M33-013416.44 in filter V on MJD  58695.360
17.12± 0.05-M33-013416.44 in filter B on MJD  58695.360
17.02± 0.04-M33-013416.44 in filter R on MJD  58695.360
----
58757.17 17.16± 0.05-M33-013416.44 in filter V on MJD  58757.170
---- 17.02± 0.05-M33-013416.44 in filter R on MJD  58757.170
----
58784.14 17.19± 0.05AM33-013416.44 in filter V on MJD  58784.140
M33-013416.44 in filter V on MJD  58784.140
17.17± 0.05-M33-013416.44 in filter B on MJD  58784.140
---- 16.93± 0.08-M33-013416.44 in filter I on MJD  58784.140
58812.22 17.16± 0.04-M33-013416.44 in filter V on MJD  58812.220
-------- 16.98± 0.06-M33-013416.44 in filter I on MJD  58812.220
58902.07 17.26± 0.04-M33-013416.44 in filter V on MJD  58902.070
---- 17.18± 0.04-M33-013416.44 in filter R on MJD  58902.070
----
59059.38 17.13± 0.05-M33-013416.44 in filter V on MJD  59059.380
17.14± 0.06-M33-013416.44 in filter B on MJD  59059.380
--------
59081.26 17.06± 0.05-M33-013416.44 in filter V on MJD  59081.260
---- 16.95± 0.05-M33-013416.44 in filter R on MJD  59081.260
----
59084.38-------- 16.90± 0.07TM33-013416.44 in filter R on MJD  59084.380
----
59161.07 17.12± 0.05-M33-013416.44 in filter V on MJD  59161.070
17.11± 0.06-M33-013416.44 in filter B on MJD  59161.070
17.00± 0.04-M33-013416.44 in filter R on MJD  59161.070
----
59171.09 17.03± 0.04-M33-013416.44 in filter V on MJD  59171.090
-------- 16.82± 0.06-M33-013416.44 in filter I on MJD  59171.090
59227.12 17.17± 0.04AM33-013416.44 in filter V on MJD  59227.120
M33-013416.44 in filter V on MJD  59227.120
17.11± 0.05AM33-013416.44 in filter B on MJD  59227.120
M33-013416.44 in filter B on MJD  59227.120
17.03± 0.04AM33-013416.44 in filter R on MJD  59227.120
M33-013416.44 in filter R on MJD  59227.120
16.96± 0.08-M33-013416.44 in filter I on MJD  59227.120
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 M33-013416.44Plot of color for M33-013416.44

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 [0.33 mag]B [0.35 mag]R [0.38 mag]
B [0.33 mag]0.89 (22)
R [0.38 mag]0.82 (23)0.82 (16)
I [0.43 mag]0.63 (14)0.34 (8)0.28 (7)

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 M33-013416.44

Plot to assess correlation between bands for M33-013416.44

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)
2.43 | 0.86
R
(I|R)
2.52 | 0.802.07 | 0.56
I
(I|R)
2.60 | 1.141.52 | 1.311.29 | 1.13

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