Color composite thumbnail image of V-097751V-097751 (J013355.21+303429.9)



Target Notes

Color composite thumbnail image of V-097751

Classification: OB-Supergiant

Three LGGS stars about 2 acrseconds to E combine to be comparable brightness to target in VBR and -0.7 magnitudes brighter in I. Images with pair was not resolved are rejected (marked "X"). Those with less certain PSF fits are marked "B."

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
56140.38 18.14± 0.19AbV-097751 in filter V on MJD  56140.380
V-097751 in filter V on MJD  56140.380
---- 18.04± 0.33BV-097751 in filter R on MJD  56140.380
V-097751 in filter R on MJD  56140.380
----
56593.16 17.47± 0.07BV-097751 in filter V on MJD  56593.160
17.90± 0.12bV-097751 in filter B on MJD  56593.160
--------
56599.19 18.61± 0.26bV-097751 in filter V on MJD  56599.190
V-097751 in filter V on MJD  56599.190
17.59± 0.07AbV-097751 in filter B on MJD  56599.190
V-097751 in filter B on MJD  56599.190
17.48± 0.10AbV-097751 in filter R on MJD  56599.190
V-097751 in filter R on MJD  56599.190
V-097751 in filter R on MJD  56599.190
----
56976.18 18.02± 0.07AbV-097751 in filter V on MJD  56976.180
V-097751 in filter V on MJD  56976.180
17.55± 0.08AbV-097751 in filter B on MJD  56976.180
V-097751 in filter B on MJD  56976.180
18.42± 0.17BV-097751 in filter R on MJD  56976.180
V-097751 in filter R on MJD  56976.180
----
56982.22 17.58± 0.07bV-097751 in filter V on MJD  56982.220
17.45± 0.07bV-097751 in filter B on MJD  56982.220
17.39± 0.07bV-097751 in filter R on MJD  56982.220
----
57310.13 17.27± 0.06XV-097751 in filter V on MJD  57310.130
17.32± 0.07XV-097751 in filter B on MJD  57310.130
16.95± 0.05bV-097751 in filter R on MJD  57310.130
----
57328.17 18.23± 0.12ABV-097751 in filter V on MJD  57328.170
V-097751 in filter V on MJD  57328.170
17.58± 0.08AbV-097751 in filter B on MJD  57328.170
V-097751 in filter B on MJD  57328.170
17.55± 0.08AbV-097751 in filter R on MJD  57328.170
V-097751 in filter R on MJD  57328.170
----
57406.10 17.27± 0.09XV-097751 in filter V on MJD  57406.100
17.63± 0.16bV-097751 in filter B on MJD  57406.100
18.17± 0.10BV-097751 in filter R on MJD  57406.100
17.39± 0.20bV-097751 in filter I on MJD  57406.100
57634.37 17.53± 0.07AbV-097751 in filter V on MJD  57634.370
V-097751 in filter V on MJD  57634.370
17.34± 0.09bV-097751 in filter B on MJD  57634.370
V-097751 in filter B on MJD  57634.370
17.67± 0.09bV-097751 in filter R on MJD  57634.370
V-097751 in filter R on MJD  57634.370
17.68± 0.12BV-097751 in filter I on MJD  57634.370
57638.43 17.58± 0.09bV-097751 in filter V on MJD  57638.430
-------- 17.30± 0.11bV-097751 in filter I on MJD  57638.430
57687.13 17.28± 0.05XV-097751 in filter V on MJD  57687.130
17.47± 0.07bV-097751 in filter B on MJD  57687.130
17.68± 0.09bV-097751 in filter R on MJD  57687.130
17.82± 0.16bV-097751 in filter I on MJD  57687.130
57964.33 17.30± 0.07bV-097751 in filter V on MJD  57964.330
17.48± 0.11bV-097751 in filter B on MJD  57964.330
17.38± 0.09bV-097751 in filter R on MJD  57964.330
17.21± 0.16bV-097751 in filter I on MJD  57964.330
58045.18 17.16± 0.05XV-097751 in filter V on MJD  58045.180
17.27± 0.08bV-097751 in filter B on MJD  58045.180
16.88± 0.06XV-097751 in filter R on MJD  58045.180
----
58073.20 17.63± 0.09bV-097751 in filter V on MJD  58073.200
17.45± 0.08XV-097751 in filter B on MJD  58073.200
--------
58103.18 17.84± 0.16TbV-097751 in filter V on MJD  58103.180
------------
58108.11 17.49± 0.12bV-097751 in filter V on MJD  58108.110
17.39± 0.12bV-097751 in filter B on MJD  58108.110
---- 16.98± 0.34bV-097751 in filter I on MJD  58108.110
58312.39 17.88± 0.14bV-097751 in filter V on MJD  58312.390
17.60± 0.25bV-097751 in filter B on MJD  58312.390
--------
58317.37 17.42± 0.07bV-097751 in filter V on MJD  58317.370
17.59± 0.08bV-097751 in filter B on MJD  58317.370
17.42± 0.08bV-097751 in filter R on MJD  58317.370
----
58341.34 17.40± 0.09bV-097751 in filter V on MJD  58341.340
-------- 17.34± 0.10bV-097751 in filter I on MJD  58341.340
58342.40 17.80± 0.17bV-097751 in filter V on MJD  58342.400
17.52± 0.16bV-097751 in filter B on MJD  58342.400
17.44± 0.11bV-097751 in filter R on MJD  58342.400
----
58375.14 17.74± 0.06bV-097751 in filter V on MJD  58375.140
---- 17.57± 0.09bV-097751 in filter R on MJD  58375.140
----
58420.10 17.24± 0.05bV-097751 in filter V on MJD  58420.100
17.26± 0.06XV-097751 in filter B on MJD  58420.100
---- 17.63± 0.10bV-097751 in filter I on MJD  58420.100
58433.01 17.23± 0.05AXV-097751 in filter V on MJD  58433.010
V-097751 in filter V on MJD  58433.010
---- 17.36± 0.12AbV-097751 in filter R on MJD  58433.010
V-097751 in filter R on MJD  58433.010
16.64± 0.09bV-097751 in filter I on MJD  58433.010
58672.39 17.18± 0.07XV-097751 in filter V on MJD  58672.390
---- 17.50± 0.09bV-097751 in filter R on MJD  58672.390
16.51± 0.09XV-097751 in filter I on MJD  58672.390
58695.36 17.66± 0.10bV-097751 in filter V on MJD  58695.360
17.55± 0.09bV-097751 in filter B on MJD  58695.360
17.46± 0.06bV-097751 in filter R on MJD  58695.360
----
58757.17 17.44± 0.11BV-097751 in filter V on MJD  58757.170
---- 17.38± 0.09bV-097751 in filter R on MJD  58757.170
----
58784.14 17.65± 0.09AbV-097751 in filter V on MJD  58784.140
V-097751 in filter V on MJD  58784.140
17.58± 0.07bV-097751 in filter B on MJD  58784.140
---- 17.33± 0.09bV-097751 in filter I on MJD  58784.140
58812.22 17.57± 0.11bV-097751 in filter V on MJD  58812.220
-------- 17.14± 0.15bV-097751 in filter I on MJD  58812.220
58902.06 17.50± 0.05AbV-097751 in filter V on MJD  58902.060
V-097751 in filter V on MJD  58902.060
---- 17.48± 0.05bV-097751 in filter R on MJD  58902.060
17.33± 0.09bV-097751 in filter I on MJD  58902.060
59056.38 17.61± 0.07bV-097751 in filter V on MJD  59056.380
17.63± 0.06bV-097751 in filter B on MJD  59056.380
17.43± 0.09BV-097751 in filter R on MJD  59056.380
17.29± 0.10bV-097751 in filter I on MJD  59056.380
59059.39 17.61± 0.07AbV-097751 in filter V on MJD  59059.390
V-097751 in filter V on MJD  59059.390
17.45± 0.11bV-097751 in filter B on MJD  59059.390
17.55± 0.08bV-097751 in filter R on MJD  59059.390
16.70± 0.09XV-097751 in filter I on MJD  59059.390
59081.29 17.64± 0.10AbV-097751 in filter V on MJD  59081.290
V-097751 in filter V on MJD  59081.290
17.74± 0.10bV-097751 in filter B on MJD  59081.290
17.62± 0.08AbV-097751 in filter R on MJD  59081.290
V-097751 in filter R on MJD  59081.290
----
59082.32 17.62± 0.09bV-097751 in filter V on MJD  59082.320
17.67± 0.03bV-097751 in filter B on MJD  59082.320
V-097751 in filter B on MJD  59082.320
17.50± 0.05bV-097751 in filter R on MJD  59082.320
V-097751 in filter R on MJD  59082.320
V-097751 in filter R on MJD  59082.320
----
59084.38-------- 17.47± 0.08TbV-097751 in filter R on MJD  59084.380
----
59161.09 17.74± 0.20AbV-097751 in filter V on MJD  59161.090
V-097751 in filter V on MJD  59161.090
17.46± 0.05AbV-097751 in filter B on MJD  59161.090
17.42± 0.09AbV-097751 in filter R on MJD  59161.090
V-097751 in filter R on MJD  59161.090
----
59171.11 17.67± 0.16AbV-097751 in filter V on MJD  59171.110
V-097751 in filter V on MJD  59171.110
17.63± 0.10bV-097751 in filter B on MJD  59171.110
---- 17.38± 0.14AbV-097751 in filter I on MJD  59171.110
V-097751 in filter I on MJD  59171.110
59227.09 17.60± 0.06AbV-097751 in filter V on MJD  59227.090
V-097751 in filter V on MJD  59227.090
17.60± 0.06AbV-097751 in filter B on MJD  59227.090
V-097751 in filter B on MJD  59227.090
17.45± 0.06bV-097751 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-097751Plot of color for V-097751

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 [0.63 mag]B [1.37 mag]R [1.47 mag]
B [0.63 mag]0.00 (20)
R [1.47 mag]0.16 (19)0.01 (17)
I [1.18 mag]0.04 (11)0.02 (8)0.22 (7)

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-097751

Plot to assess correlation between bands for V-097751

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)
0.13 | 0.68
R
(I|R)
2.54 | 1.620.09 | 0.59
I
(I|R)
-1.21 | 1.51-1.06 | 0.903.62 | 0.91

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