Color composite thumbnail image of V-073722V-073722 (J013342.78+303256.3)



Target Notes

Color composite thumbnail image of V-073722

Classification: B[e]sg

Two LGGS stars (J013342.71+303300.2, J013342.93+303253.2) about 1 magnitude fainter within 4 arcseconds. Twelve more LGGS stars >3 mag fainter within five 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 18.00± 0.06bV-073722 in filter V on MJD  56140.400
---- 17.65± 0.11bV-073722 in filter R on MJD  56140.400
----
56593.16 17.80± 0.04bV-073722 in filter V on MJD  56593.160
17.80± 0.04bV-073722 in filter B on MJD  56593.160
--------
56599.21 17.93± 0.06AbV-073722 in filter V on MJD  56599.210
V-073722 in filter V on MJD  56599.210
17.74± 0.04AbV-073722 in filter B on MJD  56599.210
V-073722 in filter B on MJD  56599.210
17.51± 0.06AbV-073722 in filter R on MJD  56599.210
V-073722 in filter R on MJD  56599.210
----
56976.19 17.91± 0.05bV-073722 in filter V on MJD  56976.190
17.95± 0.05bV-073722 in filter B on MJD  56976.190
17.70± 0.07bV-073722 in filter R on MJD  56976.190
----
56982.22 18.01± 0.06bV-073722 in filter V on MJD  56982.220
17.96± 0.06bV-073722 in filter B on MJD  56982.220
17.79± 0.07bV-073722 in filter R on MJD  56982.220
----
57035.14 17.89± 0.06bV-073722 in filter V on MJD  57035.140
17.35± 0.04bV-073722 in filter B on MJD  57035.140
17.43± 0.06bV-073722 in filter R on MJD  57035.140
----
57310.16 17.75± 0.05bV-073722 in filter V on MJD  57310.160
17.69± 0.05bV-073722 in filter B on MJD  57310.160
17.55± 0.06bV-073722 in filter R on MJD  57310.160
----
57328.19 18.01± 0.06bV-073722 in filter V on MJD  57328.190
17.76± 0.07bV-073722 in filter B on MJD  57328.190
17.70± 0.07bV-073722 in filter R on MJD  57328.190
----
57406.10 17.83± 0.08bV-073722 in filter V on MJD  57406.100
17.71± 0.06bV-073722 in filter B on MJD  57406.100
17.59± 0.06bV-073722 in filter R on MJD  57406.100
17.77± 0.12bV-073722 in filter I on MJD  57406.100
57634.41 17.89± 0.07bV-073722 in filter V on MJD  57634.410
17.71± 0.08bV-073722 in filter B on MJD  57634.410
17.60± 0.08bV-073722 in filter R on MJD  57634.410
----
57638.43 18.02± 0.07bV-073722 in filter V on MJD  57638.430
-------- 17.76± 0.11bV-073722 in filter I on MJD  57638.430
57964.36 17.99± 0.05AbV-073722 in filter V on MJD  57964.360
V-073722 in filter V on MJD  57964.360
17.78± 0.07bV-073722 in filter B on MJD  57964.360
17.58± 0.06bV-073722 in filter R on MJD  57964.360
17.61± 0.08AbV-073722 in filter I on MJD  57964.360
V-073722 in filter I on MJD  57964.360
V-073722 in filter I on MJD  57964.360
58043.15 17.92± 0.05AbV-073722 in filter V on MJD  58043.150
V-073722 in filter V on MJD  58043.150
17.97± 0.06AbV-073722 in filter B on MJD  58043.150
V-073722 in filter B on MJD  58043.150
17.61± 0.05AbV-073722 in filter R on MJD  58043.150
V-073722 in filter R on MJD  58043.150
17.53± 0.10bV-073722 in filter I on MJD  58043.150
58073.20 17.89± 0.05bV-073722 in filter V on MJD  58073.200
17.76± 0.07bV-073722 in filter B on MJD  58073.200
--------
58103.18 17.87± 0.06TbV-073722 in filter V on MJD  58103.180
------------
58108.14 17.97± 0.06AbV-073722 in filter V on MJD  58108.140
V-073722 in filter V on MJD  58108.140
17.88± 0.07AbV-073722 in filter B on MJD  58108.140
V-073722 in filter B on MJD  58108.140
---- 17.52± 0.10AbV-073722 in filter I on MJD  58108.140
V-073722 in filter I on MJD  58108.140
58312.39 17.93± 0.05bV-073722 in filter V on MJD  58312.390
17.97± 0.10bV-073722 in filter B on MJD  58312.390
--------
58317.37 17.86± 0.05bV-073722 in filter V on MJD  58317.370
17.82± 0.07bV-073722 in filter B on MJD  58317.370
17.66± 0.05bV-073722 in filter R on MJD  58317.370
----
58341.34 17.94± 0.07bV-073722 in filter V on MJD  58341.340
-------- 17.70± 0.08bV-073722 in filter I on MJD  58341.340
58342.40 17.99± 0.06bV-073722 in filter V on MJD  58342.400
17.73± 0.07bV-073722 in filter B on MJD  58342.400
17.74± 0.06bV-073722 in filter R on MJD  58342.400
----
58375.14 17.95± 0.06bV-073722 in filter V on MJD  58375.140
---- 17.59± 0.05bV-073722 in filter R on MJD  58375.140
----
58420.10 17.82± 0.06bV-073722 in filter V on MJD  58420.100
17.76± 0.07bV-073722 in filter B on MJD  58420.100
---- 17.46± 0.09bV-073722 in filter I on MJD  58420.100
58433.02 17.90± 0.05bV-073722 in filter V on MJD  58433.020
---- 17.59± 0.06bV-073722 in filter R on MJD  58433.020
17.97± 0.12bV-073722 in filter I on MJD  58433.020
58696.41 18.08± 0.06bV-073722 in filter V on MJD  58696.410
17.78± 0.07bV-073722 in filter B on MJD  58696.410
17.69± 0.08bV-073722 in filter R on MJD  58696.410
----
58750.22 17.97± 0.05bV-073722 in filter V on MJD  58750.220
17.95± 0.04bV-073722 in filter B on MJD  58750.220
---- 17.79± 0.09bV-073722 in filter I on MJD  58750.220
58757.17 17.90± 0.06bV-073722 in filter V on MJD  58757.170
---- 17.45± 0.06bV-073722 in filter R on MJD  58757.170
----
58784.14 18.00± 0.05AbV-073722 in filter V on MJD  58784.140
V-073722 in filter V on MJD  58784.140
V-073722 in filter V on MJD  58784.140
17.86± 0.06bV-073722 in filter B on MJD  58784.140
17.76± 0.05bV-073722 in filter R on MJD  58784.140
17.67± 0.08bV-073722 in filter I on MJD  58784.140
59059.39 17.96± 0.06AbV-073722 in filter V on MJD  59059.390
V-073722 in filter V on MJD  59059.390
17.84± 0.06bV-073722 in filter B on MJD  59059.390
17.79± 0.06bV-073722 in filter R on MJD  59059.390
17.67± 0.11bV-073722 in filter I on MJD  59059.390
59081.29 17.96± 0.06AbV-073722 in filter V on MJD  59081.290
V-073722 in filter V on MJD  59081.290
17.89± 0.05bV-073722 in filter B on MJD  59081.290
17.63± 0.05AbV-073722 in filter R on MJD  59081.290
V-073722 in filter R on MJD  59081.290
----
59082.32 17.97± 0.03bV-073722 in filter V on MJD  59082.320
17.91± 0.04bV-073722 in filter B on MJD  59082.320
V-073722 in filter B on MJD  59082.320
17.71± 0.05bV-073722 in filter R on MJD  59082.320
V-073722 in filter R on MJD  59082.320
V-073722 in filter R on MJD  59082.320
----
59084.31-------- 17.69± 0.06TbV-073722 in filter R on MJD  59084.310
V-073722 in filter R on MJD  59084.310
V-073722 in filter R on MJD  59084.310
----
59161.10 17.97± 0.05AbV-073722 in filter V on MJD  59161.100
V-073722 in filter V on MJD  59161.100
V-073722 in filter V on MJD  59161.100
17.85± 0.06AbV-073722 in filter B on MJD  59161.100
V-073722 in filter B on MJD  59161.100
17.67± 0.05AbV-073722 in filter R on MJD  59161.100
V-073722 in filter R on MJD  59161.100
V-073722 in filter R on MJD  59161.100
17.74± 0.10bV-073722 in filter I on MJD  59161.100
59171.13 17.87± 0.05AbV-073722 in filter V on MJD  59171.130
V-073722 in filter V on MJD  59171.130
V-073722 in filter V on MJD  59171.130
17.88± 0.07AbV-073722 in filter B on MJD  59171.130
V-073722 in filter B on MJD  59171.130
17.75± 0.05bV-073722 in filter R on MJD  59171.130
17.68± 0.09AbV-073722 in filter I on MJD  59171.130
V-073722 in filter I on MJD  59171.130
V-073722 in filter I on MJD  59171.130
59227.13 17.95± 0.05AbV-073722 in filter V on MJD  59227.130
V-073722 in filter V on MJD  59227.130
V-073722 in filter V on MJD  59227.130
17.89± 0.05AbV-073722 in filter B on MJD  59227.130
V-073722 in filter B on MJD  59227.130
V-073722 in filter B on MJD  59227.130
17.61± 0.05AbV-073722 in filter R on MJD  59227.130
V-073722 in filter R on MJD  59227.130
17.62± 0.09bV-073722 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-073722Plot of color for V-073722

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 [0.62 mag]B [0.33 mag]R [0.36 mag]
B [0.62 mag]0.10 (26)
R [0.36 mag]0.23 (24)0.45 (20)
I [0.50 mag]0.01 (14)0.00 (11)0.02 (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 V-073722

Plot to assess correlation between bands for V-073722

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)
1.19 | 1.57
R
(I|R)
0.91 | 0.732.99 | 0.76
I
(I|R)
0.20 | 0.900.16 | 1.13-0.09 | 1.73

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