Color composite thumbnail image of V-136261V-136261 (J013430.26+304039.7)



Target Notes

Color composite thumbnail image of V-136261

Classification: OB-Supergiant

On east side of a clump of LGGS stars of comparable brightness.

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
56140.37 17.65± 0.06bV-136261 in filter V on MJD  56140.370
---- 17.04± 0.10bV-136261 in filter R on MJD  56140.370
----
56599.17 17.44± 0.05bV-136261 in filter V on MJD  56599.170
17.68± 0.07bV-136261 in filter B on MJD  56599.170
17.17± 0.06bV-136261 in filter R on MJD  56599.170
----
56976.16 17.62± 0.04bV-136261 in filter V on MJD  56976.160
17.64± 0.06bV-136261 in filter B on MJD  56976.160
17.38± 0.05bV-136261 in filter R on MJD  56976.160
----
57038.13 17.55± 0.05bV-136261 in filter V on MJD  57038.130
17.59± 0.05bV-136261 in filter B on MJD  57038.130
17.28± 0.04bV-136261 in filter R on MJD  57038.130
----
57310.13 17.58± 0.06bV-136261 in filter V on MJD  57310.130
17.65± 0.07bV-136261 in filter B on MJD  57310.130
17.32± 0.05bV-136261 in filter R on MJD  57310.130
----
57335.18 17.61± 0.06bV-136261 in filter V on MJD  57335.180
---- 17.16± 0.05bV-136261 in filter R on MJD  57335.180
----
57401.10 17.50± 0.05bV-136261 in filter V on MJD  57401.100
17.51± 0.06bV-136261 in filter B on MJD  57401.100
--------
57634.34 17.57± 0.05bV-136261 in filter V on MJD  57634.340
17.64± 0.07bV-136261 in filter B on MJD  57634.340
17.19± 0.05bV-136261 in filter R on MJD  57634.340
16.67± 0.06bV-136261 in filter I on MJD  57634.340
57687.13 17.47± 0.05bV-136261 in filter V on MJD  57687.130
17.82± 0.07bV-136261 in filter B on MJD  57687.130
17.17± 0.05bV-136261 in filter R on MJD  57687.130
16.75± 0.08bV-136261 in filter I on MJD  57687.130
57964.35 17.48± 0.04AbV-136261 in filter V on MJD  57964.350
V-136261 in filter V on MJD  57964.350
17.54± 0.06AbV-136261 in filter B on MJD  57964.350
V-136261 in filter B on MJD  57964.350
17.14± 0.05AbV-136261 in filter R on MJD  57964.350
V-136261 in filter R on MJD  57964.350
16.61± 0.07AbV-136261 in filter I on MJD  57964.350
V-136261 in filter I on MJD  57964.350
58045.16 17.54± 0.06AbV-136261 in filter V on MJD  58045.160
V-136261 in filter V on MJD  58045.160
17.63± 0.07AbV-136261 in filter B on MJD  58045.160
V-136261 in filter B on MJD  58045.160
17.17± 0.05AbV-136261 in filter R on MJD  58045.160
V-136261 in filter R on MJD  58045.160
----
58073.19 17.62± 0.05AbV-136261 in filter V on MJD  58073.190
V-136261 in filter V on MJD  58073.190
17.60± 0.07AbV-136261 in filter B on MJD  58073.190
V-136261 in filter B on MJD  58073.190
--------
58103.16 17.55± 0.05AbV-136261 in filter V on MJD  58103.160
V-136261 in filter V on MJD  58103.160
-------- 16.52± 0.07bV-136261 in filter I on MJD  58103.160
58108.11 17.52± 0.06bV-136261 in filter V on MJD  58108.110
17.48± 0.08bV-136261 in filter B on MJD  58108.110
---- 16.50± 0.08bV-136261 in filter I on MJD  58108.110
58312.39 17.58± 0.05bV-136261 in filter V on MJD  58312.390
17.41± 0.08bV-136261 in filter B on MJD  58312.390
--------
58316.38 17.48± 0.03bV-136261 in filter V on MJD  58316.380
17.55± 0.06bV-136261 in filter B on MJD  58316.380
17.31± 0.04bV-136261 in filter R on MJD  58316.380
16.60± 0.09bV-136261 in filter I on MJD  58316.380
58317.37 17.56± 0.05bV-136261 in filter V on MJD  58317.370
17.46± 0.06bV-136261 in filter B on MJD  58317.370
V-136261 in filter B on MJD  58317.370
17.17± 0.05bV-136261 in filter R on MJD  58317.370
V-136261 in filter R on MJD  58317.370
----
58341.34 17.61± 0.07bV-136261 in filter V on MJD  58341.340
-------- 16.62± 0.08bV-136261 in filter I on MJD  58341.340
58342.38 17.63± 0.05AbV-136261 in filter V on MJD  58342.380
V-136261 in filter V on MJD  58342.380
17.53± 0.07AbV-136261 in filter B on MJD  58342.380
V-136261 in filter B on MJD  58342.380
17.30± 0.05AbV-136261 in filter R on MJD  58342.380
V-136261 in filter R on MJD  58342.380
16.65± 0.06bV-136261 in filter I on MJD  58342.380
V-136261 in filter I on MJD  58342.380
58375.14 17.44± 0.05bV-136261 in filter V on MJD  58375.140
---- 17.26± 0.05bV-136261 in filter R on MJD  58375.140
----
58420.08 17.49± 0.05AbV-136261 in filter V on MJD  58420.080
V-136261 in filter V on MJD  58420.080
17.36± 0.06AbV-136261 in filter B on MJD  58420.080
V-136261 in filter B on MJD  58420.080
17.63± 0.10XV-136261 in filter R on MJD  58420.080
16.65± 0.07AbV-136261 in filter I on MJD  58420.080
V-136261 in filter I on MJD  58420.080
58433.00 17.50± 0.07bV-136261 in filter V on MJD  58433.000
---- 17.35± 0.06bV-136261 in filter R on MJD  58433.000
16.65± 0.07bV-136261 in filter I on MJD  58433.000
58672.39 17.67± 0.09bV-136261 in filter V on MJD  58672.390
---- 17.20± 0.06bV-136261 in filter R on MJD  58672.390
> 18.05XV-136261 in filter I on MJD  58672.390
58695.36 17.53± 0.05bV-136261 in filter V on MJD  58695.360
17.51± 0.06bV-136261 in filter B on MJD  58695.360
17.20± 0.05bV-136261 in filter R on MJD  58695.360
----
58784.12 17.52± 0.06bV-136261 in filter V on MJD  58784.120
17.54± 0.06bV-136261 in filter B on MJD  58784.120
--------
58812.22 17.65± 0.05bV-136261 in filter V on MJD  58812.220
-------- 16.92± 0.11bV-136261 in filter I on MJD  58812.220
58902.07 17.55± 0.05bV-136261 in filter V on MJD  58902.070
---- 17.33± 0.05bV-136261 in filter R on MJD  58902.070
----
59059.38 17.53± 0.05bV-136261 in filter V on MJD  59059.380
17.51± 0.06bV-136261 in filter B on MJD  59059.380
--------
59081.30 17.47± 0.05AbV-136261 in filter V on MJD  59081.300
V-136261 in filter V on MJD  59081.300
17.57± 0.06bV-136261 in filter B on MJD  59081.300
17.06± 0.04AbV-136261 in filter R on MJD  59081.300
V-136261 in filter R on MJD  59081.300
----
59084.34-------- 17.14± 0.05TbV-136261 in filter R on MJD  59084.340
----
59161.07 17.43± 0.05bV-136261 in filter V on MJD  59161.070
17.53± 0.07bV-136261 in filter B on MJD  59161.070
17.18± 0.05bV-136261 in filter R on MJD  59161.070
----
59171.09 17.41± 0.05bV-136261 in filter V on MJD  59171.090
-------- 16.83± 0.06bV-136261 in filter I on MJD  59171.090
59227.08 17.63± 0.04bV-136261 in filter V on MJD  59227.080
17.63± 0.05bV-136261 in filter B on MJD  59227.080
17.37± 0.05bV-136261 in filter R on MJD  59227.080
----
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-136261Plot of color for V-136261

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 [0.46 mag]B [0.26 mag]R [0.34 mag]
B [0.46 mag]0.00 (22)
R [0.34 mag]0.03 (21)0.01 (15)
I [0.42 mag]0.01 (12)0.39 (7)0.08 (6)

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-136261

Plot to assess correlation between bands for V-136261

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 | 1.08
R
(I|R)
0.83 | 0.770.48 | 0.14
I
(I|R)
-0.14 | 1.101.06 | 2.00-0.25 | 3.18

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