Color composite thumbnail image of V-072150V-072150 (J013342.05+304200.2)



Target Notes

Color composite thumbnail image of V-072150

Classification: OB-Supergiant

Two LGGS stars >2 magnitudes fainter within 2 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
56140.39 17.92± 0.04bV-072150 in filter V on MJD  56140.390
---- 17.54± 0.13bV-072150 in filter R on MJD  56140.390
----
56593.16 18.02± 0.05bV-072150 in filter V on MJD  56593.160
17.94± 0.04bV-072150 in filter B on MJD  56593.160
--------
56599.18 17.92± 0.05AbV-072150 in filter V on MJD  56599.180
V-072150 in filter V on MJD  56599.180
18.02± 0.06AbV-072150 in filter B on MJD  56599.180
V-072150 in filter B on MJD  56599.180
17.70± 0.07AbV-072150 in filter R on MJD  56599.180
V-072150 in filter R on MJD  56599.180
----
56976.19 17.94± 0.05bV-072150 in filter V on MJD  56976.190
17.97± 0.06bV-072150 in filter B on MJD  56976.190
17.63± 0.07bV-072150 in filter R on MJD  56976.190
----
57328.16 18.02± 0.04bV-072150 in filter V on MJD  57328.160
18.07± 0.05bV-072150 in filter B on MJD  57328.160
17.85± 0.05bV-072150 in filter R on MJD  57328.160
----
57406.10 17.96± 0.08bV-072150 in filter V on MJD  57406.100
18.01± 0.08bV-072150 in filter B on MJD  57406.100
17.78± 0.07bV-072150 in filter R on MJD  57406.100
17.85± 0.12bV-072150 in filter I on MJD  57406.100
57634.38 17.95± 0.05bV-072150 in filter V on MJD  57634.380
17.99± 0.06bV-072150 in filter B on MJD  57634.380
17.84± 0.07bV-072150 in filter R on MJD  57634.380
17.95± 0.10bV-072150 in filter I on MJD  57634.380
57687.13 17.96± 0.06bV-072150 in filter V on MJD  57687.130
17.86± 0.07bV-072150 in filter B on MJD  57687.130
17.76± 0.06bV-072150 in filter R on MJD  57687.130
17.99± 0.10bV-072150 in filter I on MJD  57687.130
57964.37 18.02± 0.05bV-072150 in filter V on MJD  57964.370
17.98± 0.06bV-072150 in filter B on MJD  57964.370
17.88± 0.06bV-072150 in filter R on MJD  57964.370
18.19± 0.08bV-072150 in filter I on MJD  57964.370
57988.41 18.04± 0.06bV-072150 in filter V on MJD  57988.410
17.97± 0.05bV-072150 in filter B on MJD  57988.410
--------
58043.10 17.96± 0.05bV-072150 in filter V on MJD  58043.100
---- 17.75± 0.05bV-072150 in filter R on MJD  58043.100
18.25± 0.11bV-072150 in filter I on MJD  58043.100
58045.15 18.00± 0.06bV-072150 in filter V on MJD  58045.150
17.88± 0.07bV-072150 in filter B on MJD  58045.150
17.43± 0.05bV-072150 in filter R on MJD  58045.150
----
58073.18 17.98± 0.04bV-072150 in filter V on MJD  58073.180
17.93± 0.07bV-072150 in filter B on MJD  58073.180
--------
58103.17 17.95± 0.06AbV-072150 in filter V on MJD  58103.170
V-072150 in filter V on MJD  58103.170
17.98± 0.05bV-072150 in filter B on MJD  58103.170
--------
58108.14 17.98± 0.06bV-072150 in filter V on MJD  58108.140
17.97± 0.07bV-072150 in filter B on MJD  58108.140
---- 17.89± 0.09bV-072150 in filter I on MJD  58108.140
58317.39 18.04± 0.05bV-072150 in filter V on MJD  58317.390
---- 17.99± 0.08bV-072150 in filter R on MJD  58317.390
----
58341.40 18.14± 0.06bV-072150 in filter V on MJD  58341.400
18.22± 0.09bV-072150 in filter B on MJD  58341.400
18.11± 0.09bV-072150 in filter R on MJD  58341.400
18.43± 0.13bV-072150 in filter I on MJD  58341.400
58403.15 17.94± 0.05TbV-072150 in filter V on MJD  58403.150
--------> 18.37-V-072150 in filter I on MJD  58403.150
58433.00 17.98± 0.07bV-072150 in filter V on MJD  58433.000
---- 17.79± 0.07bV-072150 in filter R on MJD  58433.000
17.89± 0.10bV-072150 in filter I on MJD  58433.000
58673.38 18.14± 0.04bV-072150 in filter V on MJD  58673.380
18.15± 0.06bV-072150 in filter B on MJD  58673.380
--------
58750.19 18.02± 0.04bV-072150 in filter V on MJD  58750.190
---- 17.89± 0.06bV-072150 in filter R on MJD  58750.190
----
58779.18 17.93± 0.05bV-072150 in filter V on MJD  58779.180
17.99± 0.04bV-072150 in filter B on MJD  58779.180
--------
58812.22 18.12± 0.05bV-072150 in filter V on MJD  58812.220
-------- 17.90± 0.08bV-072150 in filter I on MJD  58812.220
58902.06 18.03± 0.05AbV-072150 in filter V on MJD  58902.060
V-072150 in filter V on MJD  58902.060
---- 17.84± 0.06bV-072150 in filter R on MJD  58902.060
17.70± 0.10bV-072150 in filter I on MJD  58902.060
59056.38 18.13± 0.05bV-072150 in filter V on MJD  59056.380
18.10± 0.07bV-072150 in filter B on MJD  59056.380
17.86± 0.06bV-072150 in filter R on MJD  59056.380
18.26± 0.09bV-072150 in filter I on MJD  59056.380
59081.33 18.11± 0.05bV-072150 in filter V on MJD  59081.330
17.97± 0.07bV-072150 in filter B on MJD  59081.330
17.83± 0.05bV-072150 in filter R on MJD  59081.330
----
59082.34 18.00± 0.05AbV-072150 in filter V on MJD  59082.340
V-072150 in filter V on MJD  59082.340
17.94± 0.06AbV-072150 in filter B on MJD  59082.340
V-072150 in filter B on MJD  59082.340
V-072150 in filter B on MJD  59082.340
17.84± 0.06AbV-072150 in filter R on MJD  59082.340
V-072150 in filter R on MJD  59082.340
V-072150 in filter R on MJD  59082.340
----
59084.29-------- 17.86± 0.07TbV-072150 in filter R on MJD  59084.290
----
59161.09 18.03± 0.05AbV-072150 in filter V on MJD  59161.090
V-072150 in filter V on MJD  59161.090
18.03± 0.06AbV-072150 in filter B on MJD  59161.090
V-072150 in filter B on MJD  59161.090
18.06± 0.06AbV-072150 in filter R on MJD  59161.090
V-072150 in filter R on MJD  59161.090
----
59171.09 17.93± 0.05AbV-072150 in filter V on MJD  59171.090
V-072150 in filter V on MJD  59171.090
V-072150 in filter V on MJD  59171.090
17.93± 0.06AbV-072150 in filter B on MJD  59171.090
V-072150 in filter B on MJD  59171.090
17.68± 0.06bV-072150 in filter R on MJD  59171.090
18.05± 0.10AbV-072150 in filter I on MJD  59171.090
V-072150 in filter I on MJD  59171.090
V-072150 in filter I on MJD  59171.090
59227.09 18.09± 0.05AbV-072150 in filter V on MJD  59227.090
V-072150 in filter V on MJD  59227.090
18.01± 0.05AbV-072150 in filter B on MJD  59227.090
V-072150 in filter B on MJD  59227.090
17.91± 0.06bV-072150 in filter R on MJD  59227.090
----
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-072150Plot of color for V-072150

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 [0.36 mag]B [0.23 mag]R [0.67 mag]
B [0.36 mag]0.39 (22)
R [0.67 mag]0.39 (21)0.48 (15)
I [0.73 mag]0.17 (12)0.54 (8)0.26 (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-072150

Plot to assess correlation between bands for V-072150

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)
1.04 | 0.82
R
(I|R)
1.62 | 0.582.23 | 0.27
I
(I|R)
0.81 | 0.691.66 | 0.651.19 | 0.66

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