Color composite thumbnail image of M33C-7024M33C-7024 (J013337.35+303329.0)



Target Notes

Color composite thumbnail image of M33C-7024

Classification: Fe_emission

(Candidate LBV) In a crowd but >3 mag brighter than all around it.

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 18.52± 0.07bM33C-7024 in filter V on MJD  56140.400
---- 18.21± 0.16bM33C-7024 in filter R on MJD  56140.400
----
56593.16 18.36± 0.04bM33C-7024 in filter V on MJD  56593.160
18.38± 0.05bM33C-7024 in filter B on MJD  56593.160
--------
56599.21 18.34± 0.07AbM33C-7024 in filter V on MJD  56599.210
M33C-7024 in filter V on MJD  56599.210
18.42± 0.05AbM33C-7024 in filter B on MJD  56599.210
M33C-7024 in filter B on MJD  56599.210
18.24± 0.07AbM33C-7024 in filter R on MJD  56599.210
M33C-7024 in filter R on MJD  56599.210
----
56976.19 18.44± 0.06bM33C-7024 in filter V on MJD  56976.190
18.43± 0.06bM33C-7024 in filter B on MJD  56976.190
18.29± 0.07bM33C-7024 in filter R on MJD  56976.190
----
56982.22 18.43± 0.06bM33C-7024 in filter V on MJD  56982.220
18.41± 0.07bM33C-7024 in filter B on MJD  56982.220
18.27± 0.07bM33C-7024 in filter R on MJD  56982.220
----
57035.14 18.51± 0.07XM33C-7024 in filter V on MJD  57035.140
18.79± 0.07XM33C-7024 in filter B on MJD  57035.140
18.34± 0.08bM33C-7024 in filter R on MJD  57035.140
----
57310.16 18.50± 0.07bM33C-7024 in filter V on MJD  57310.160
18.38± 0.06bM33C-7024 in filter B on MJD  57310.160
18.36± 0.08bM33C-7024 in filter R on MJD  57310.160
----
57328.17 18.45± 0.05AbM33C-7024 in filter V on MJD  57328.170
M33C-7024 in filter V on MJD  57328.170
18.40± 0.06AbM33C-7024 in filter B on MJD  57328.170
M33C-7024 in filter B on MJD  57328.170
18.22± 0.06AbM33C-7024 in filter R on MJD  57328.170
M33C-7024 in filter R on MJD  57328.170
----
57406.10 18.36± 0.10bM33C-7024 in filter V on MJD  57406.100
18.39± 0.11bM33C-7024 in filter B on MJD  57406.100
18.28± 0.09bM33C-7024 in filter R on MJD  57406.100
18.23± 0.15bM33C-7024 in filter I on MJD  57406.100
57634.41 18.47± 0.07bM33C-7024 in filter V on MJD  57634.410
18.35± 0.08bM33C-7024 in filter B on MJD  57634.410
18.25± 0.08bM33C-7024 in filter R on MJD  57634.410
----
57638.40 18.47± 0.06AbM33C-7024 in filter V on MJD  57638.400
M33C-7024 in filter V on MJD  57638.400
18.47± 0.05bM33C-7024 in filter B on MJD  57638.400
18.30± 0.04bM33C-7024 in filter R on MJD  57638.400
18.02± 0.10AbM33C-7024 in filter I on MJD  57638.400
M33C-7024 in filter I on MJD  57638.400
57964.36 18.48± 0.05AbM33C-7024 in filter V on MJD  57964.360
M33C-7024 in filter V on MJD  57964.360
18.39± 0.08bM33C-7024 in filter B on MJD  57964.360
18.29± 0.06bM33C-7024 in filter R on MJD  57964.360
18.16± 0.09AbM33C-7024 in filter I on MJD  57964.360
M33C-7024 in filter I on MJD  57964.360
M33C-7024 in filter I on MJD  57964.360
57988.43 18.44± 0.07TbM33C-7024 in filter V on MJD  57988.430
------------
58043.13 18.43± 0.05bM33C-7024 in filter V on MJD  58043.130
18.51± 0.05bM33C-7024 in filter B on MJD  58043.130
18.29± 0.05bM33C-7024 in filter R on MJD  58043.130
----
58073.22 18.40± 0.06bM33C-7024 in filter V on MJD  58073.220
18.62± 0.06bM33C-7024 in filter B on MJD  58073.220
--------
58108.13 18.48± 0.06AbM33C-7024 in filter V on MJD  58108.130
M33C-7024 in filter V on MJD  58108.130
18.46± 0.06AbM33C-7024 in filter B on MJD  58108.130
M33C-7024 in filter B on MJD  58108.130
---- 17.98± 0.09AbM33C-7024 in filter I on MJD  58108.130
M33C-7024 in filter I on MJD  58108.130
58312.39 18.43± 0.06bM33C-7024 in filter V on MJD  58312.390
18.36± 0.12bM33C-7024 in filter B on MJD  58312.390
--------
58316.35 18.58± 0.07bM33C-7024 in filter V on MJD  58316.350
18.65± 0.05bM33C-7024 in filter B on MJD  58316.350
--------
58317.37 18.48± 0.05bM33C-7024 in filter V on MJD  58317.370
18.40± 0.07bM33C-7024 in filter B on MJD  58317.370
M33C-7024 in filter B on MJD  58317.370
18.27± 0.06bM33C-7024 in filter R on MJD  58317.370
----
58341.34 18.46± 0.08bM33C-7024 in filter V on MJD  58341.340
-------- 18.03± 0.09bM33C-7024 in filter I on MJD  58341.340
58342.40 18.45± 0.09bM33C-7024 in filter V on MJD  58342.400
18.16± 0.09bM33C-7024 in filter B on MJD  58342.400
18.23± 0.08bM33C-7024 in filter R on MJD  58342.400
----
58375.14 18.43± 0.07bM33C-7024 in filter V on MJD  58375.140
---- 18.25± 0.06bM33C-7024 in filter R on MJD  58375.140
----
58420.10 18.45± 0.07bM33C-7024 in filter V on MJD  58420.100
18.45± 0.07bM33C-7024 in filter B on MJD  58420.100
---- 18.00± 0.10bM33C-7024 in filter I on MJD  58420.100
58433.02 18.32± 0.06bM33C-7024 in filter V on MJD  58433.020
---- 18.19± 0.07bM33C-7024 in filter R on MJD  58433.020
18.20± 0.13bM33C-7024 in filter I on MJD  58433.020
58673.38 18.48± 0.04bM33C-7024 in filter V on MJD  58673.380
18.53± 0.05bM33C-7024 in filter B on MJD  58673.380
--------
58696.41 18.53± 0.06bM33C-7024 in filter V on MJD  58696.410
18.31± 0.09bM33C-7024 in filter B on MJD  58696.410
18.19± 0.09bM33C-7024 in filter R on MJD  58696.410
----
58750.22 18.47± 0.05bM33C-7024 in filter V on MJD  58750.220
18.40± 0.04bM33C-7024 in filter B on MJD  58750.220
---- 17.98± 0.09bM33C-7024 in filter I on MJD  58750.220
58757.17 18.44± 0.06bM33C-7024 in filter V on MJD  58757.170
---- 18.34± 0.06bM33C-7024 in filter R on MJD  58757.170
----
58784.14 18.50± 0.05AbM33C-7024 in filter V on MJD  58784.140
M33C-7024 in filter V on MJD  58784.140
---- 18.27± 0.05bM33C-7024 in filter R on MJD  58784.140
18.01± 0.09bM33C-7024 in filter I on MJD  58784.140
58812.20 18.42± 0.07bM33C-7024 in filter V on MJD  58812.200
---- 18.15± 0.07bM33C-7024 in filter R on MJD  58812.200
----
59059.39 18.45± 0.06AbM33C-7024 in filter V on MJD  59059.390
M33C-7024 in filter V on MJD  59059.390
18.44± 0.06bM33C-7024 in filter B on MJD  59059.390
18.35± 0.06bM33C-7024 in filter R on MJD  59059.390
18.18± 0.14bM33C-7024 in filter I on MJD  59059.390
59081.29 18.54± 0.06AbM33C-7024 in filter V on MJD  59081.290
M33C-7024 in filter V on MJD  59081.290
18.45± 0.05bM33C-7024 in filter B on MJD  59081.290
18.31± 0.06AbM33C-7024 in filter R on MJD  59081.290
M33C-7024 in filter R on MJD  59081.290
----
59082.32 18.48± 0.04bM33C-7024 in filter V on MJD  59082.320
18.50± 0.04bM33C-7024 in filter B on MJD  59082.320
M33C-7024 in filter B on MJD  59082.320
18.30± 0.05bM33C-7024 in filter R on MJD  59082.320
M33C-7024 in filter R on MJD  59082.320
M33C-7024 in filter R on MJD  59082.320
----
59084.25-------- 18.34± 0.04TbM33C-7024 in filter R on MJD  59084.250
----
59161.10 18.43± 0.06AbM33C-7024 in filter V on MJD  59161.100
M33C-7024 in filter V on MJD  59161.100
M33C-7024 in filter V on MJD  59161.100
18.42± 0.06AbM33C-7024 in filter B on MJD  59161.100
M33C-7024 in filter B on MJD  59161.100
18.23± 0.05AbM33C-7024 in filter R on MJD  59161.100
M33C-7024 in filter R on MJD  59161.100
M33C-7024 in filter R on MJD  59161.100
17.95± 0.10bM33C-7024 in filter I on MJD  59161.100
59171.14 18.48± 0.05AbM33C-7024 in filter V on MJD  59171.140
M33C-7024 in filter V on MJD  59171.140
18.41± 0.07AbM33C-7024 in filter B on MJD  59171.140
M33C-7024 in filter B on MJD  59171.140
18.27± 0.06bM33C-7024 in filter R on MJD  59171.140
17.83± 0.09AbM33C-7024 in filter I on MJD  59171.140
M33C-7024 in filter I on MJD  59171.140
59227.13 18.41± 0.05AbM33C-7024 in filter V on MJD  59227.130
M33C-7024 in filter V on MJD  59227.130
M33C-7024 in filter V on MJD  59227.130
18.40± 0.05AbM33C-7024 in filter B on MJD  59227.130
M33C-7024 in filter B on MJD  59227.130
M33C-7024 in filter B on MJD  59227.130
18.22± 0.05AbM33C-7024 in filter R on MJD  59227.130
M33C-7024 in filter R on MJD  59227.130
17.99± 0.10bM33C-7024 in filter I on MJD  59227.130
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-7024Plot of color for M33C-7024

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 [0.48 mag]B [0.26 mag]R [0.21 mag]
B [0.48 mag]0.03 (27)
R [0.21 mag]0.08 (25)0.22 (19)
I [0.40 mag]0.31 (13)0.05 (10)0.03 (9)

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-7024

Plot to assess correlation between bands for M33C-7024

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)
0.31 | 1.55
R
(I|R)
0.25 | 1.100.46 | 0.30
I
(I|R)
-0.38 | 0.83-0.04 | 0.520.16 | 0.62

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