Color composite thumbnail image of V-107775V-107775 (J013401.08+303619.6)



Target Notes

Color composite thumbnail image of V-107775

Classification: OB-Supergiant

Two LGGS stars (J013401.16+303618.4 and J013401.18+303618.3) of comparable brightness 1.5-1.8 arcseconds to SE. Combine to be brighter than the target in all. They cannot be reliably separated from the target under most conditions. All three modeled together as a single star.

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 17.41± 0.06ABV-107775 in filter V on MJD  56140.380
V-107775 in filter V on MJD  56140.380
---- 17.13± 0.11ABV-107775 in filter R on MJD  56140.380
V-107775 in filter R on MJD  56140.380
----
56593.16 17.59± 0.04BV-107775 in filter V on MJD  56593.160
17.50± 0.03BV-107775 in filter B on MJD  56593.160
--------
56599.18 17.25± 0.05ABV-107775 in filter V on MJD  56599.180
V-107775 in filter V on MJD  56599.180
17.55± 0.06ABV-107775 in filter B on MJD  56599.180
V-107775 in filter B on MJD  56599.180
16.98± 0.06ABV-107775 in filter R on MJD  56599.180
V-107775 in filter R on MJD  56599.180
----
56976.16 17.28± 0.05BV-107775 in filter V on MJD  56976.160
17.52± 0.06BV-107775 in filter B on MJD  56976.160
17.03± 0.05BV-107775 in filter R on MJD  56976.160
----
57038.13 17.45± 0.05BV-107775 in filter V on MJD  57038.130
17.64± 0.05BV-107775 in filter B on MJD  57038.130
17.14± 0.05BV-107775 in filter R on MJD  57038.130
----
57310.13 17.21± 0.06BV-107775 in filter V on MJD  57310.130
17.42± 0.07BV-107775 in filter B on MJD  57310.130
17.11± 0.06BV-107775 in filter R on MJD  57310.130
----
57328.16 17.41± 0.04BV-107775 in filter V on MJD  57328.160
17.62± 0.04BV-107775 in filter B on MJD  57328.160
17.36± 0.05BV-107775 in filter R on MJD  57328.160
----
57335.18 17.50± 0.06BV-107775 in filter V on MJD  57335.180
---- 17.35± 0.07BV-107775 in filter R on MJD  57335.180
----
57401.10 17.30± 0.05BV-107775 in filter V on MJD  57401.100
17.64± 0.06BV-107775 in filter B on MJD  57401.100
--------
57406.10 17.28± 0.05BV-107775 in filter V on MJD  57406.100
17.33± 0.05BV-107775 in filter B on MJD  57406.100
17.12± 0.06BV-107775 in filter R on MJD  57406.100
17.04± 0.08BV-107775 in filter I on MJD  57406.100
57634.38 17.45± 0.06ABV-107775 in filter V on MJD  57634.380
V-107775 in filter V on MJD  57634.380
17.54± 0.07ABV-107775 in filter B on MJD  57634.380
V-107775 in filter B on MJD  57634.380
V-107775 in filter B on MJD  57634.380
17.14± 0.07ABV-107775 in filter R on MJD  57634.380
V-107775 in filter R on MJD  57634.380
V-107775 in filter R on MJD  57634.380
17.07± 0.08ABV-107775 in filter I on MJD  57634.380
V-107775 in filter I on MJD  57634.380
57638.43 17.41± 0.07BV-107775 in filter V on MJD  57638.430
-------- 17.07± 0.10BV-107775 in filter I on MJD  57638.430
57687.13 17.29± 0.05BV-107775 in filter V on MJD  57687.130
17.45± 0.06BV-107775 in filter B on MJD  57687.130
17.06± 0.05BV-107775 in filter R on MJD  57687.130
17.03± 0.07BV-107775 in filter I on MJD  57687.130
57964.36 17.53± 0.04BV-107775 in filter V on MJD  57964.360
17.53± 0.07ABV-107775 in filter B on MJD  57964.360
V-107775 in filter B on MJD  57964.360
17.32± 0.05BV-107775 in filter R on MJD  57964.360
17.06± 0.06BV-107775 in filter I on MJD  57964.360
58045.16 17.43± 0.06BV-107775 in filter V on MJD  58045.160
17.38± 0.07BV-107775 in filter B on MJD  58045.160
17.03± 0.06BV-107775 in filter R on MJD  58045.160
----
58073.19 17.49± 0.05ABV-107775 in filter V on MJD  58073.190
V-107775 in filter V on MJD  58073.190
17.59± 0.09ABV-107775 in filter B on MJD  58073.190
V-107775 in filter B on MJD  58073.190
--------
58103.16 17.36± 0.05ABV-107775 in filter V on MJD  58103.160
V-107775 in filter V on MJD  58103.160
-------- 17.18± 0.07BV-107775 in filter I on MJD  58103.160
58108.11 17.36± 0.06BV-107775 in filter V on MJD  58108.110
17.44± 0.08BV-107775 in filter B on MJD  58108.110
---- 17.16± 0.10BV-107775 in filter I on MJD  58108.110
58312.39 17.57± 0.07BV-107775 in filter V on MJD  58312.390
17.41± 0.08BV-107775 in filter B on MJD  58312.390
--------
58317.37 17.69± 0.06BV-107775 in filter V on MJD  58317.370
17.82± 0.08BV-107775 in filter B on MJD  58317.370
17.21± 0.05BV-107775 in filter R on MJD  58317.370
----
58341.34 17.40± 0.07BV-107775 in filter V on MJD  58341.340
-------- 17.09± 0.08BV-107775 in filter I on MJD  58341.340
58342.40 17.37± 0.06BV-107775 in filter V on MJD  58342.400
17.67± 0.08BV-107775 in filter B on MJD  58342.400
17.20± 0.06BV-107775 in filter R on MJD  58342.400
----
58375.14 17.36± 0.05BV-107775 in filter V on MJD  58375.140
---- 17.06± 0.05BV-107775 in filter R on MJD  58375.140
----
58420.10 17.30± 0.05BV-107775 in filter V on MJD  58420.100
17.37± 0.06BV-107775 in filter B on MJD  58420.100
---- 17.01± 0.07BV-107775 in filter I on MJD  58420.100
58433.00 17.32± 0.06BV-107775 in filter V on MJD  58433.000
---- 17.05± 0.06BV-107775 in filter R on MJD  58433.000
16.98± 0.07BV-107775 in filter I on MJD  58433.000
58672.39 17.34± 0.08BV-107775 in filter V on MJD  58672.390
---- 17.11± 0.06BV-107775 in filter R on MJD  58672.390
> 18.05BV-107775 in filter I on MJD  58672.390
58695.36 17.54± 0.05BV-107775 in filter V on MJD  58695.360
17.48± 0.06BV-107775 in filter B on MJD  58695.360
17.49± 0.04BV-107775 in filter R on MJD  58695.360
----
58784.12 17.53± 0.06BV-107775 in filter V on MJD  58784.120
17.56± 0.06BV-107775 in filter B on MJD  58784.120
--------
58812.22 17.49± 0.06BV-107775 in filter V on MJD  58812.220
-------- 16.89± 0.06BV-107775 in filter I on MJD  58812.220
58902.06 17.43± 0.04ABV-107775 in filter V on MJD  58902.060
V-107775 in filter V on MJD  58902.060
---- 17.08± 0.05BV-107775 in filter R on MJD  58902.060
16.98± 0.08BV-107775 in filter I on MJD  58902.060
59056.38 17.48± 0.05BV-107775 in filter V on MJD  59056.380
17.59± 0.07BV-107775 in filter B on MJD  59056.380
16.95± 0.05BV-107775 in filter R on MJD  59056.380
17.04± 0.08BV-107775 in filter I on MJD  59056.380
59059.38 17.43± 0.05BV-107775 in filter V on MJD  59059.380
17.46± 0.06BV-107775 in filter B on MJD  59059.380
--------
59081.26 17.52± 0.07BV-107775 in filter V on MJD  59081.260
---- 17.31± 0.06BV-107775 in filter R on MJD  59081.260
----
59082.32 17.31± 0.03BV-107775 in filter V on MJD  59082.320
17.59± 0.04BV-107775 in filter B on MJD  59082.320
17.07± 0.05BV-107775 in filter R on MJD  59082.320
V-107775 in filter R on MJD  59082.320
----
59084.34-------- 17.10± 0.05TBV-107775 in filter R on MJD  59084.340
----
59161.09 17.46± 0.05ABV-107775 in filter V on MJD  59161.090
V-107775 in filter V on MJD  59161.090
17.38± 0.05ABV-107775 in filter B on MJD  59161.090
V-107775 in filter B on MJD  59161.090
17.33± 0.08ABV-107775 in filter R on MJD  59161.090
V-107775 in filter R on MJD  59161.090
----
59171.11 17.50± 0.06ABV-107775 in filter V on MJD  59171.110
V-107775 in filter V on MJD  59171.110
17.59± 0.04BV-107775 in filter B on MJD  59171.110
---- 17.04± 0.08ABV-107775 in filter I on MJD  59171.110
V-107775 in filter I on MJD  59171.110
59227.09 17.48± 0.06ABV-107775 in filter V on MJD  59227.090
V-107775 in filter V on MJD  59227.090
17.53± 0.04ABV-107775 in filter B on MJD  59227.090
V-107775 in filter B on MJD  59227.090
17.11± 0.05BV-107775 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-107775Plot of color for V-107775

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 [0.49 mag]B [0.48 mag]R [0.54 mag]
B [0.49 mag]0.13 (26)
R [0.54 mag]0.30 (24)0.00 (17)
I [0.29 mag]0.02 (14)0.00 (8)0.18 (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-107775

Plot to assess correlation between bands for V-107775

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)
0.95 | 0.72
R
(I|R)
3.02 | 0.86-0.20 | 0.22
I
(I|R)
-0.22 | 1.880.09 | 4.170.49 | 3.53

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