Color composite thumbnail image of V-033347V-033347 (J013316.50+303212.1 )



Target Notes

Color composite thumbnail image of V-033347

Classification: YSG

Thirteen LGGS stars >3.5 magnitudes fainter within 5 arcseconds.

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 16.86± 0.05bV-033347 in filter V on MJD  56140.400
---- 16.56± 0.06bV-033347 in filter R on MJD  56140.400
----
56593.16 16.79± 0.03bV-033347 in filter V on MJD  56593.160
17.02± 0.03bV-033347 in filter B on MJD  56593.160
--------
56599.21 16.81± 0.05AbV-033347 in filter V on MJD  56599.210
V-033347 in filter V on MJD  56599.210
17.02± 0.04AbV-033347 in filter B on MJD  56599.210
V-033347 in filter B on MJD  56599.210
16.56± 0.06AbV-033347 in filter R on MJD  56599.210
V-033347 in filter R on MJD  56599.210
----
56976.19 16.79± 0.04bV-033347 in filter V on MJD  56976.190
16.99± 0.04bV-033347 in filter B on MJD  56976.190
16.57± 0.06bV-033347 in filter R on MJD  56976.190
----
56982.22 16.82± 0.06bV-033347 in filter V on MJD  56982.220
17.02± 0.06bV-033347 in filter B on MJD  56982.220
16.55± 0.07bV-033347 in filter R on MJD  56982.220
----
57035.14 16.84± 0.04bV-033347 in filter V on MJD  57035.140
17.17± 0.04bV-033347 in filter B on MJD  57035.140
16.64± 0.05bV-033347 in filter R on MJD  57035.140
----
57310.16 16.77± 0.05bV-033347 in filter V on MJD  57310.160
16.93± 0.04bV-033347 in filter B on MJD  57310.160
16.53± 0.05bV-033347 in filter R on MJD  57310.160
----
57328.17 16.85± 0.04AbV-033347 in filter V on MJD  57328.170
V-033347 in filter V on MJD  57328.170
17.06± 0.05AbV-033347 in filter B on MJD  57328.170
V-033347 in filter B on MJD  57328.170
16.57± 0.05AbV-033347 in filter R on MJD  57328.170
V-033347 in filter R on MJD  57328.170
----
57406.10 16.81± 0.05bV-033347 in filter V on MJD  57406.100
16.96± 0.04bV-033347 in filter B on MJD  57406.100
16.48± 0.04bV-033347 in filter R on MJD  57406.100
16.23± 0.07bV-033347 in filter I on MJD  57406.100
57634.39 16.71± 0.06AbV-033347 in filter V on MJD  57634.390
V-033347 in filter V on MJD  57634.390
16.97± 0.06AbV-033347 in filter B on MJD  57634.390
V-033347 in filter B on MJD  57634.390
16.48± 0.07AbV-033347 in filter R on MJD  57634.390
V-033347 in filter R on MJD  57634.390
----
57638.40 16.74± 0.05AbV-033347 in filter V on MJD  57638.400
V-033347 in filter V on MJD  57638.400
16.98± 0.04bV-033347 in filter B on MJD  57638.400
16.50± 0.03bV-033347 in filter R on MJD  57638.400
16.25± 0.08AbV-033347 in filter I on MJD  57638.400
V-033347 in filter I on MJD  57638.400
57964.40 16.79± 0.04bV-033347 in filter V on MJD  57964.400
-------- 16.30± 0.07AbV-033347 in filter I on MJD  57964.400
V-033347 in filter I on MJD  57964.400
57988.43 16.69± 0.06TbV-033347 in filter V on MJD  57988.430
------------
58043.13 16.77± 0.03bV-033347 in filter V on MJD  58043.130
17.01± 0.03bV-033347 in filter B on MJD  58043.130
16.52± 0.04bV-033347 in filter R on MJD  58043.130
----
58073.22 16.80± 0.04bV-033347 in filter V on MJD  58073.220
17.10± 0.05bV-033347 in filter B on MJD  58073.220
--------
58108.13 16.85± 0.04AbV-033347 in filter V on MJD  58108.130
V-033347 in filter V on MJD  58108.130
17.05± 0.05AbV-033347 in filter B on MJD  58108.130
V-033347 in filter B on MJD  58108.130
---- 16.35± 0.08AbV-033347 in filter I on MJD  58108.130
V-033347 in filter I on MJD  58108.130
58316.35 16.87± 0.06bV-033347 in filter V on MJD  58316.350
17.20± 0.04bV-033347 in filter B on MJD  58316.350
--------
58339.40 16.82± 0.05bV-033347 in filter V on MJD  58339.400
17.01± 0.06bV-033347 in filter B on MJD  58339.400
16.55± 0.06bV-033347 in filter R on MJD  58339.400
----
58341.37 16.92± 0.04bV-033347 in filter V on MJD  58341.370
-------- 16.45± 0.08bV-033347 in filter I on MJD  58341.370
58373.15 16.81± 0.06bV-033347 in filter V on MJD  58373.150
17.09± 0.06bV-033347 in filter B on MJD  58373.150
--------
58375.16 16.71± 0.04bV-033347 in filter V on MJD  58375.160
-------- 16.22± 0.09bV-033347 in filter I on MJD  58375.160
58433.02 16.86± 0.04bV-033347 in filter V on MJD  58433.020
---- 16.63± 0.05bV-033347 in filter R on MJD  58433.020
16.35± 0.08bV-033347 in filter I on MJD  58433.020
58673.38 16.84± 0.03bV-033347 in filter V on MJD  58673.380
17.12± 0.03bV-033347 in filter B on MJD  58673.380
--------
58695.39 16.78± 0.04bV-033347 in filter V on MJD  58695.390
---- 16.56± 0.04bV-033347 in filter R on MJD  58695.390
----
58696.41 16.83± 0.05bV-033347 in filter V on MJD  58696.410
17.06± 0.07bV-033347 in filter B on MJD  58696.410
16.55± 0.07bV-033347 in filter R on MJD  58696.410
V-033347 in filter R on MJD  58696.410
----
58750.20 16.77± 0.04AbV-033347 in filter V on MJD  58750.200
V-033347 in filter V on MJD  58750.200
17.03± 0.03bV-033347 in filter B on MJD  58750.200
16.49± 0.04bV-033347 in filter R on MJD  58750.200
16.34± 0.08bV-033347 in filter I on MJD  58750.200
58757.17 16.74± 0.05bV-033347 in filter V on MJD  58757.170
---- 16.50± 0.05bV-033347 in filter R on MJD  58757.170
----
58779.18 16.77± 0.04bV-033347 in filter V on MJD  58779.180
16.97± 0.04bV-033347 in filter B on MJD  58779.180
--------
58784.14 16.78± 0.04AbV-033347 in filter V on MJD  58784.140
V-033347 in filter V on MJD  58784.140
---- 16.55± 0.04bV-033347 in filter R on MJD  58784.140
16.28± 0.07bV-033347 in filter I on MJD  58784.140
58812.20 16.79± 0.06bV-033347 in filter V on MJD  58812.200
---- 16.55± 0.06bV-033347 in filter R on MJD  58812.200
----
59059.40 16.81± 0.06bV-033347 in filter V on MJD  59059.400
---- 16.57± 0.05bV-033347 in filter R on MJD  59059.400
16.28± 0.08bV-033347 in filter I on MJD  59059.400
59081.34 16.83± 0.05AbV-033347 in filter V on MJD  59081.340
V-033347 in filter V on MJD  59081.340
17.01± 0.04AbV-033347 in filter B on MJD  59081.340
V-033347 in filter B on MJD  59081.340
16.58± 0.05bV-033347 in filter R on MJD  59081.340
V-033347 in filter R on MJD  59081.340
16.31± 0.07bV-033347 in filter I on MJD  59081.340
59082.35 16.79± 0.04AbV-033347 in filter V on MJD  59082.350
V-033347 in filter V on MJD  59082.350
17.04± 0.03AbV-033347 in filter B on MJD  59082.350
V-033347 in filter B on MJD  59082.350
V-033347 in filter B on MJD  59082.350
V-033347 in filter B on MJD  59082.350
16.58± 0.04AbV-033347 in filter R on MJD  59082.350
V-033347 in filter R on MJD  59082.350
V-033347 in filter R on MJD  59082.350
V-033347 in filter R on MJD  59082.350
----
59084.25-------- 16.57± 0.04TbV-033347 in filter R on MJD  59084.250
----
59161.12 16.67± 0.04AbV-033347 in filter V on MJD  59161.120
V-033347 in filter V on MJD  59161.120
16.91± 0.02bV-033347 in filter B on MJD  59161.120
16.43± 0.04AbV-033347 in filter R on MJD  59161.120
V-033347 in filter R on MJD  59161.120
16.25± 0.09bV-033347 in filter I on MJD  59161.120
59171.14 16.70± 0.04AbV-033347 in filter V on MJD  59171.140
V-033347 in filter V on MJD  59171.140
V-033347 in filter V on MJD  59171.140
16.91± 0.05AbV-033347 in filter B on MJD  59171.140
V-033347 in filter B on MJD  59171.140
V-033347 in filter B on MJD  59171.140
16.47± 0.05bV-033347 in filter R on MJD  59171.140
16.21± 0.08AbV-033347 in filter I on MJD  59171.140
V-033347 in filter I on MJD  59171.140
V-033347 in filter I on MJD  59171.140
59227.13 16.70± 0.04AbV-033347 in filter V on MJD  59227.130
V-033347 in filter V on MJD  59227.130
V-033347 in filter V on MJD  59227.130
16.91± 0.04AbV-033347 in filter B on MJD  59227.130
V-033347 in filter B on MJD  59227.130
V-033347 in filter B on MJD  59227.130
16.48± 0.05AbV-033347 in filter R on MJD  59227.130
V-033347 in filter R on MJD  59227.130
16.19± 0.07-bV-033347 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 V-033347Plot of color for V-033347

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 [0.29 mag]B [0.25 mag]R [0.20 mag]
B [0.29 mag]0.63 (25)
R [0.20 mag]0.69 (25)0.71 (18)
I [0.26 mag]0.70 (14)0.80 (8)0.46 (10)

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 V-033347

Plot to assess correlation between bands for V-033347

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)
2.10 | 1.51
R
(I|R)
1.05 | 1.071.23 | 0.13
I
(I|R)
1.21 | 1.950.96 | 2.000.58 | 1.99

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