M31/M33 Catalog: Photometry for M33C-4119


Open a color composite thumbnail image of M33C-4119M33C-4119 (J013312.81+303012.6 )


Target Notes

Open a color composite thumbnail image of M33C-4119

Classification: LBV

Mild overlap with five LGGS stars >3.5 magnitudes fainter within five arcseconds. Reclassified as an LBV on June 1, 2023 (see Martin et al. 2023).

Find In Simbad Query LGGS Massey (2016) at VizieR Query CAT WISE (Eisenhardt et al., 2020) at VizieR Query Gaia DR3 (2022) 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 17.84± 0.06bOpen a thumbnail image of M33C-4119 in filter V on MJD 56140.400
---- 17.91± 0.13bOpen a thumnail image of M33C-4119 in filter R on MJD 56140.400
----
56599.22 17.71± 0.07bOpen a thumbnail image of M33C-4119 in filter V on MJD 56599.220
 17.74± 0.05bOpen a thumnail image of M33C-4119 in filter B on MJD 56599.220
 17.53± 0.06bOpen a thumnail image of M33C-4119 in filter R on MJD 56599.220
----
57035.14 17.42± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 57035.140
 17.57± 0.05bOpen a thumnail image of M33C-4119 in filter B on MJD 57035.140
 17.34± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 57035.140
----
57310.16 17.28± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 57310.160
 17.39± 0.04bOpen a thumnail image of M33C-4119 in filter B on MJD 57310.160
 17.08± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 57310.160
----
57406.10 17.26± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 57406.100
 17.61± 0.05bOpen a thumnail image of M33C-4119 in filter B on MJD 57406.100
 17.00± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 57406.100
 16.91± 0.08bOpen a thumnail image of M33C-4119 in filter I on MJD 57406.100
57634.41 17.31± 0.07bOpen a thumbnail image of M33C-4119 in filter V on MJD 57634.410
 17.35± 0.08bOpen a thumnail image of M33C-4119 in filter B on MJD 57634.410
 17.14± 0.08bOpen a thumnail image of M33C-4119 in filter R on MJD 57634.410
----
57638.40 17.33± 0.05AbOpen a thumbnail image of M33C-4119 in filter V on MJD 57638.400
Open a thumbnail image of M33C-4119 in filter V on MJD 57638.400
 17.44± 0.04bOpen a thumnail image of M33C-4119 in filter B on MJD 57638.400
 17.17± 0.04bOpen a thumnail image of M33C-4119 in filter R on MJD 57638.400
 16.99± 0.09AbOpen a thumnail image of M33C-4119 in filter I on MJD 57638.400
Open a thumnail image of M33C-4119 in filter I on MJD 57638.400
57964.40 17.57± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 57964.400
-------- 17.36± 0.08AbOpen a thumnail image of M33C-4119 in filter I on MJD 57964.400
Open a thumnail image of M33C-4119 in filter I on MJD 57964.400
57988.43 17.31± 0.06TbOpen a thumbnail image of M33C-4119 in filter V on MJD 57988.430
------------
58043.15 17.16± 0.04AbOpen a thumbnail image of M33C-4119 in filter V on MJD 58043.150
Open a thumbnail image of M33C-4119 in filter V on MJD 58043.150
 17.31± 0.05AbOpen a thumnail image of M33C-4119 in filter B on MJD 58043.150
Open a thumnail image of M33C-4119 in filter B on MJD 58043.150
 16.87± 0.06AbOpen a thumnail image of M33C-4119 in filter R on MJD 58043.150
Open a thumnail image of M33C-4119 in filter R on MJD 58043.150
 16.78± 0.09bOpen a thumnail image of M33C-4119 in filter I on MJD 58043.150
58073.22 17.28± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 58073.220
 17.52± 0.04bOpen a thumnail image of M33C-4119 in filter B on MJD 58073.220
--------
58108.13 17.44± 0.05AbOpen a thumbnail image of M33C-4119 in filter V on MJD 58108.130
Open a thumbnail image of M33C-4119 in filter V on MJD 58108.130
 17.56± 0.04AbOpen a thumnail image of M33C-4119 in filter B on MJD 58108.130
Open a thumnail image of M33C-4119 in filter B on MJD 58108.130
---- 17.15± 0.08AbOpen a thumnail image of M33C-4119 in filter I on MJD 58108.130
Open a thumnail image of M33C-4119 in filter I on MJD 58108.130
58316.35 17.18± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 58316.350
 17.38± 0.04bOpen a thumnail image of M33C-4119 in filter B on MJD 58316.350
--------
58339.40 16.97± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 58339.400
 17.11± 0.06bOpen a thumnail image of M33C-4119 in filter B on MJD 58339.400
 16.75± 0.06bOpen a thumnail image of M33C-4119 in filter R on MJD 58339.400
----
58373.15 16.99± 0.06bOpen a thumbnail image of M33C-4119 in filter V on MJD 58373.150
 17.25± 0.06bOpen a thumnail image of M33C-4119 in filter B on MJD 58373.150
--------
58375.16 16.88± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 58375.160
-------- 16.44± 0.09bOpen a thumnail image of M33C-4119 in filter I on MJD 58375.160
58433.02 16.87± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 58433.020
---- 16.59± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 58433.020
 16.55± 0.10bOpen a thumnail image of M33C-4119 in filter I on MJD 58433.020
58673.38 16.86± 0.03bOpen a thumbnail image of M33C-4119 in filter V on MJD 58673.380
 17.14± 0.03bOpen a thumnail image of M33C-4119 in filter B on MJD 58673.380
--------
58695.39 17.00± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 58695.390
---- 16.73± 0.04bOpen a thumnail image of M33C-4119 in filter R on MJD 58695.390
----
58696.41 17.02± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 58696.410
 17.16± 0.07bOpen a thumnail image of M33C-4119 in filter B on MJD 58696.410
 16.71± 0.07bOpen a thumnail image of M33C-4119 in filter R on MJD 58696.410
Open a thumnail image of M33C-4119 in filter R on MJD 58696.410
----
58750.20 16.87± 0.04AbOpen a thumbnail image of M33C-4119 in filter V on MJD 58750.200
Open a thumbnail image of M33C-4119 in filter V on MJD 58750.200
 17.10± 0.03bOpen a thumnail image of M33C-4119 in filter B on MJD 58750.200
 16.58± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 58750.200
 16.47± 0.08bOpen a thumnail image of M33C-4119 in filter I on MJD 58750.200
58757.17 16.86± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 58757.170
---- 16.61± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 58757.170
----
58779.18 16.81± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 58779.180
 17.02± 0.03bOpen a thumnail image of M33C-4119 in filter B on MJD 58779.180
--------
58784.14 16.86± 0.04AbOpen a thumbnail image of M33C-4119 in filter V on MJD 58784.140
Open a thumbnail image of M33C-4119 in filter V on MJD 58784.140
---- 16.59± 0.04bOpen a thumnail image of M33C-4119 in filter R on MJD 58784.140
 16.36± 0.08bOpen a thumnail image of M33C-4119 in filter I on MJD 58784.140
58812.20 16.87± 0.06bOpen a thumbnail image of M33C-4119 in filter V on MJD 58812.200
---- 16.56± 0.06bOpen a thumnail image of M33C-4119 in filter R on MJD 58812.200
----
59059.40 17.14± 0.06bOpen a thumbnail image of M33C-4119 in filter V on MJD 59059.400
---- 16.88± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 59059.400
 16.74± 0.08bOpen a thumnail image of M33C-4119 in filter I on MJD 59059.400
59081.34 17.19± 0.05AbOpen a thumbnail image of M33C-4119 in filter V on MJD 59081.340
Open a thumbnail image of M33C-4119 in filter V on MJD 59081.340
 17.32± 0.04AbOpen a thumnail image of M33C-4119 in filter B on MJD 59081.340
Open a thumnail image of M33C-4119 in filter B on MJD 59081.340
 16.95± 0.05AbOpen a thumnail image of M33C-4119 in filter R on MJD 59081.340
Open a thumnail image of M33C-4119 in filter R on MJD 59081.340
 16.77± 0.07bOpen a thumnail image of M33C-4119 in filter I on MJD 59081.340
59082.38 17.22± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 59082.380
 17.38± 0.03bOpen a thumnail image of M33C-4119 in filter B on MJD 59082.380
Open a thumnail image of M33C-4119 in filter B on MJD 59082.380
Open a thumnail image of M33C-4119 in filter B on MJD 59082.380
 16.98± 0.04bOpen a thumnail image of M33C-4119 in filter R on MJD 59082.380
Open a thumnail image of M33C-4119 in filter R on MJD 59082.380
Open a thumnail image of M33C-4119 in filter R on MJD 59082.380
----
59084.25-------- 16.98± 0.04TbOpen a thumnail image of M33C-4119 in filter R on MJD 59084.250
----
59161.14 17.36± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 59161.140
---- 17.18± 0.04bOpen a thumnail image of M33C-4119 in filter R on MJD 59161.140
 16.98± 0.09bOpen a thumnail image of M33C-4119 in filter I on MJD 59161.140
59171.15 17.34± 0.05AbOpen a thumbnail image of M33C-4119 in filter V on MJD 59171.150
Open a thumbnail image of M33C-4119 in filter V on MJD 59171.150
 17.43± 0.06AbOpen a thumnail image of M33C-4119 in filter B on MJD 59171.150
Open a thumnail image of M33C-4119 in filter B on MJD 59171.150
 17.12± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 59171.150
 16.97± 0.08AbOpen a thumnail image of M33C-4119 in filter I on MJD 59171.150
Open a thumnail image of M33C-4119 in filter I on MJD 59171.150
59227.14 17.55± 0.05AbOpen a thumbnail image of M33C-4119 in filter V on MJD 59227.140
Open a thumbnail image of M33C-4119 in filter V on MJD 59227.140
 17.64± 0.05AbOpen a thumnail image of M33C-4119 in filter B on MJD 59227.140
Open a thumnail image of M33C-4119 in filter B on MJD 59227.140
 17.33± 0.05AbOpen a thumnail image of M33C-4119 in filter R on MJD 59227.140
Open a thumnail image of M33C-4119 in filter R on MJD 59227.140
 17.24± 0.08bOpen a thumnail image of M33C-4119 in filter I on MJD 59227.140
59415.39 17.81± 0.07TbOpen a thumbnail image of M33C-4119 in filter V on MJD 59415.390
------------
59441.42 17.78± 0.06TbOpen a thumbnail image of M33C-4119 in filter V on MJD 59441.420
------------
59442.41 17.80± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 59442.410
---- 17.64± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 59442.410
----
59463.33 17.76± 0.06AbOpen a thumbnail image of M33C-4119 in filter V on MJD 59463.330
Open a thumbnail image of M33C-4119 in filter V on MJD 59463.330
 17.82± 0.06AbOpen a thumnail image of M33C-4119 in filter B on MJD 59463.330
Open a thumnail image of M33C-4119 in filter B on MJD 59463.330
---- 17.62± 0.08bOpen a thumnail image of M33C-4119 in filter I on MJD 59463.330
59522.13 17.63± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 59522.130
---- 17.50± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 59522.130
 17.54± 0.09bOpen a thumnail image of M33C-4119 in filter I on MJD 59522.130
59525.12 17.65± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 59525.120
---- 17.54± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 59525.120
----
59546.20 17.59± 0.05AbOpen a thumbnail image of M33C-4119 in filter V on MJD 59546.200
Open a thumbnail image of M33C-4119 in filter V on MJD 59546.200
 17.69± 0.03bOpen a thumnail image of M33C-4119 in filter B on MJD 59546.200
---- 17.26± 0.08bOpen a thumnail image of M33C-4119 in filter I on MJD 59546.200
59551.14 17.61± 0.06AbOpen a thumbnail image of M33C-4119 in filter V on MJD 59551.140
Open a thumbnail image of M33C-4119 in filter V on MJD 59551.140
-------- 17.54± 0.09bOpen a thumnail image of M33C-4119 in filter I on MJD 59551.140
59583.20 17.59± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 59583.200
---- 17.48± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 59583.200
----
59608.14 17.61± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 59608.140
 17.68± 0.08bOpen a thumnail image of M33C-4119 in filter B on MJD 59608.140
 17.35± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 59608.140
----
59794.38 17.64± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 59794.380
---- 17.44± 0.04bOpen a thumnail image of M33C-4119 in filter R on MJD 59794.380
----
59849.19 17.55± 0.05AbOpen a thumbnail image of M33C-4119 in filter V on MJD 59849.190
Open a thumbnail image of M33C-4119 in filter V on MJD 59849.190
 17.71± 0.03bOpen a thumnail image of M33C-4119 in filter B on MJD 59849.190
 17.42± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 59849.190
----
59851.19 17.49± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 59851.190
 17.63± 0.04bOpen a thumnail image of M33C-4119 in filter B on MJD 59851.190
---- 17.53± 0.10bOpen a thumnail image of M33C-4119 in filter I on MJD 59851.190
59854.19 17.60± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 59854.190
---- 17.37± 0.04bOpen a thumnail image of M33C-4119 in filter R on MJD 59854.190
 17.44± 0.09bOpen a thumnail image of M33C-4119 in filter I on MJD 59854.190
59879.18 17.66± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 59879.180
 17.75± 0.04bOpen a thumnail image of M33C-4119 in filter B on MJD 59879.180
 17.51± 0.07bOpen a thumnail image of M33C-4119 in filter R on MJD 59879.180
----
59903.26 17.52± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 59903.260
 17.57± 0.05bOpen a thumnail image of M33C-4119 in filter B on MJD 59903.260
 17.34± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 59903.260
 17.26± 0.09bOpen a thumnail image of M33C-4119 in filter I on MJD 59903.260
59904.15 17.55± 0.04bOpen a thumbnail image of M33C-4119 in filter V on MJD 59904.150
 17.64± 0.03bOpen a thumnail image of M33C-4119 in filter B on MJD 59904.150
Open a thumnail image of M33C-4119 in filter B on MJD 59904.150
 17.37± 0.04bOpen a thumnail image of M33C-4119 in filter R on MJD 59904.150
Open a thumnail image of M33C-4119 in filter R on MJD 59904.150
 17.24± 0.08bOpen a thumnail image of M33C-4119 in filter I on MJD 59904.150
Open a thumnail image of M33C-4119 in filter I on MJD 59904.150
59932.20 17.69± 0.06AbOpen a thumbnail image of M33C-4119 in filter V on MJD 59932.200
Open a thumbnail image of M33C-4119 in filter V on MJD 59932.200
 17.80± 0.04bOpen a thumnail image of M33C-4119 in filter B on MJD 59932.200
 17.52± 0.07bOpen a thumnail image of M33C-4119 in filter R on MJD 59932.200
----
60172.40 17.61± 0.06bOpen a thumbnail image of M33C-4119 in filter V on MJD 60172.400
 17.67± 0.03bOpen a thumnail image of M33C-4119 in filter B on MJD 60172.400
--------
60205.19 17.66± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 60205.190
 17.67± 0.05bOpen a thumnail image of M33C-4119 in filter B on MJD 60205.190
--------
60227.15 17.54± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 60227.150
---- 17.37± 0.06bOpen a thumnail image of M33C-4119 in filter R on MJD 60227.150
----
60261.16 17.52± 0.05AbOpen a thumbnail image of M33C-4119 in filter V on MJD 60261.160
Open a thumbnail image of M33C-4119 in filter V on MJD 60261.160
---- 17.34± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 60261.160
 17.34± 0.08AbOpen a thumnail image of M33C-4119 in filter I on MJD 60261.160
Open a thumnail image of M33C-4119 in filter I on MJD 60261.160
60262.18 17.48± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 60262.180
 17.62± 0.03bOpen a thumnail image of M33C-4119 in filter B on MJD 60262.180
 17.32± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 60262.180
Open a thumnail image of M33C-4119 in filter R on MJD 60262.180
----
60290.22 17.57± 0.05AbOpen a thumbnail image of M33C-4119 in filter V on MJD 60290.220
Open a thumbnail image of M33C-4119 in filter V on MJD 60290.220
 17.65± 0.04AbOpen a thumnail image of M33C-4119 in filter B on MJD 60290.220
Open a thumnail image of M33C-4119 in filter B on MJD 60290.220
 17.45± 0.06bOpen a thumnail image of M33C-4119 in filter R on MJD 60290.220
 17.35± 0.09bOpen a thumnail image of M33C-4119 in filter I on MJD 60290.220
60292.23 17.56± 0.06AbOpen a thumbnail image of M33C-4119 in filter V on MJD 60292.230
Open a thumbnail image of M33C-4119 in filter V on MJD 60292.230
---- 17.40± 0.05-Open a thumnail image of M33C-4119 in filter R on MJD 60292.230
 17.57± 0.10bOpen a thumnail image of M33C-4119 in filter I on MJD 60292.230
60342.13 17.54± 0.06bOpen a thumbnail image of M33C-4119 in filter V on MJD 60342.130
---- 17.38± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 60342.130
----
60506.34 17.64± 0.06bOpen a thumbnail image of M33C-4119 in filter V on MJD 60506.340
---- 17.48± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 60506.340
----
60529.40 17.53± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 60529.400
 17.59± 0.07bOpen a thumnail image of M33C-4119 in filter B on MJD 60529.400
 17.34± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 60529.400
----
60533.41 17.55± 0.06bOpen a thumbnail image of M33C-4119 in filter V on MJD 60533.410
 17.66± 0.04bOpen a thumnail image of M33C-4119 in filter B on MJD 60533.410
---- 17.25± 0.09bOpen a thumnail image of M33C-4119 in filter I on MJD 60533.410
60556.31 17.57± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 60556.310
-------- 17.26± 0.08bOpen a thumnail image of M33C-4119 in filter I on MJD 60556.310
60562.27 17.56± 0.05bOpen a thumbnail image of M33C-4119 in filter V on MJD 60562.270
 17.68± 0.03bOpen a thumnail image of M33C-4119 in filter B on MJD 60562.270
---- 17.31± 0.08bOpen a thumnail image of M33C-4119 in filter I on MJD 60562.270
60592.13 17.64± 0.06AbOpen a thumbnail image of M33C-4119 in filter V on MJD 60592.130
Open a thumbnail image of M33C-4119 in filter V on MJD 60592.130
 17.67± 0.05AbOpen a thumnail image of M33C-4119 in filter B on MJD 60592.130
Open a thumnail image of M33C-4119 in filter B on MJD 60592.130
 17.53± 0.06AbOpen a thumnail image of M33C-4119 in filter R on MJD 60592.130
Open a thumnail image of M33C-4119 in filter R on MJD 60592.130
----
60612.17 17.51± 0.06bOpen a thumbnail image of M33C-4119 in filter V on MJD 60612.170
-------- 17.32± 0.07bOpen a thumnail image of M33C-4119 in filter I on MJD 60612.170
60651.20 17.75± 0.06AbOpen a thumbnail image of M33C-4119 in filter V on MJD 60651.200
Open a thumbnail image of M33C-4119 in filter V on MJD 60651.200
 17.84± 0.04bOpen a thumnail image of M33C-4119 in filter B on MJD 60651.200
 17.56± 0.05bOpen a thumnail image of M33C-4119 in filter R on MJD 60651.200
----
61025.25 18.04± 0.07AbOpen a thumbnail image of M33C-4119 in filter V on MJD 61025.250
Open a thumbnail image of M33C-4119 in filter V on MJD 61025.250
 18.02± 0.07AbOpen a thumnail image of M33C-4119 in filter B on MJD 61025.250
Open a thumnail image of M33C-4119 in filter B on MJD 61025.250
 17.71± 0.07AbOpen a thumnail image of M33C-4119 in filter R on MJD 61025.250
Open a thumnail image of M33C-4119 in filter R on MJD 61025.250
 18.09± 0.16AbOpen a thumnail image of M33C-4119 in filter I on MJD 61025.250
Open a thumnail image of M33C-4119 in filter I on MJD 61025.250
61080.12 17.78± 0.04bTOpen a thumbnail image of M33C-4119 in filter V on MJD 61080.120
------------
61083.08 17.77± 0.05AbOpen a thumbnail image of M33C-4119 in filter V on MJD 61083.080
Open a thumbnail image of M33C-4119 in filter V on MJD 61083.080
 17.85± 0.06AbOpen a thumnail image of M33C-4119 in filter B on MJD 61083.080
Open a thumnail image of M33C-4119 in filter B on MJD 61083.080
 17.63± 0.07AbOpen a thumnail image of M33C-4119 in filter R on MJD 61083.080
Open a thumnail image of M33C-4119 in filter R on MJD 61083.080
----
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

Open a plot of photometry for M33C-4119Open a plot of color for M33C-4119

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 [1.23 mag]B [1.00 mag]R [1.34 mag]
B [1.00 mag]0.95 (40)
R [1.34 mag]0.97 (46)0.91 (27)
I [1.73 mag]0.94 (30)0.89 (17)0.93 (19)

Magnitude-Magnitude Plots

The plots below are provided to check the values in the table above and also to show any non-linear correlations

Opens a plot to assess correlation between bands for M33C-4119

Opens a plot to assess correlation between bands for M33C-4119

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)		33.20 | 0.88
R
(I|R)		37.30 | 0.9026.25 | 0.68
I
(I|R)		23.69 | 1.2817.30 | 1.2327.66 | 1.45

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By John C. Martin, University of Illinois Springfield Henry R. Barber Research Observatory

Generated on 2026-10-12 15:55:15 UT-5