Color composite thumbnail image of V-130270V-130270 (J013420.92+303039.8)



Target Notes

Color composite thumbnail image of V-130270

Classification: YSG

Unresolved from J013421.00+303040.4 four magnitudes fainter.

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 16.47± 0.06bV-130270 in filter V on MJD  56140.370
---- 16.26± 0.07bV-130270 in filter R on MJD  56140.370
----
56599.17 16.47± 0.05bV-130270 in filter V on MJD  56599.170
16.63± 0.07bV-130270 in filter B on MJD  56599.170
16.27± 0.06bV-130270 in filter R on MJD  56599.170
----
56976.16 16.48± 0.04bV-130270 in filter V on MJD  56976.160
16.60± 0.06bV-130270 in filter B on MJD  56976.160
16.28± 0.04bV-130270 in filter R on MJD  56976.160
----
56982.22 16.45± 0.06bV-130270 in filter V on MJD  56982.220
16.58± 0.06bV-130270 in filter B on MJD  56982.220
16.27± 0.07bV-130270 in filter R on MJD  56982.220
----
57038.13 16.57± 0.04bV-130270 in filter V on MJD  57038.130
16.69± 0.05bV-130270 in filter B on MJD  57038.130
16.37± 0.04bV-130270 in filter R on MJD  57038.130
----
57310.13 16.50± 0.05bV-130270 in filter V on MJD  57310.130
16.64± 0.07bV-130270 in filter B on MJD  57310.130
16.28± 0.05bV-130270 in filter R on MJD  57310.130
----
57328.19 16.48± 0.05bV-130270 in filter V on MJD  57328.190
16.62± 0.07bV-130270 in filter B on MJD  57328.190
16.29± 0.07bV-130270 in filter R on MJD  57328.190
----
57335.18 16.48± 0.06bV-130270 in filter V on MJD  57335.180
---- 16.32± 0.05bV-130270 in filter R on MJD  57335.180
----
57401.10 16.52± 0.04bV-130270 in filter V on MJD  57401.100
16.67± 0.05bV-130270 in filter B on MJD  57401.100
--------
57406.10 16.49± 0.04bV-130270 in filter V on MJD  57406.100
16.68± 0.03bV-130270 in filter B on MJD  57406.100
16.31± 0.04bV-130270 in filter R on MJD  57406.100
16.13± 0.07bV-130270 in filter I on MJD  57406.100
57634.37 16.47± 0.06AbV-130270 in filter V on MJD  57634.370
V-130270 in filter V on MJD  57634.370
16.61± 0.07AbV-130270 in filter B on MJD  57634.370
V-130270 in filter B on MJD  57634.370
16.27± 0.06AbV-130270 in filter R on MJD  57634.370
V-130270 in filter R on MJD  57634.370
16.15± 0.06bV-130270 in filter I on MJD  57634.370
57638.43 16.48± 0.06bV-130270 in filter V on MJD  57638.430
-------- 16.09± 0.10bV-130270 in filter I on MJD  57638.430
57687.13 16.50± 0.05bV-130270 in filter V on MJD  57687.130
16.67± 0.06bV-130270 in filter B on MJD  57687.130
16.29± 0.05bV-130270 in filter R on MJD  57687.130
16.13± 0.06bV-130270 in filter I on MJD  57687.130
57964.33 16.51± 0.04bV-130270 in filter V on MJD  57964.330
16.66± 0.07bV-130270 in filter B on MJD  57964.330
16.33± 0.05bV-130270 in filter R on MJD  57964.330
16.16± 0.06bV-130270 in filter I on MJD  57964.330
58045.18 16.50± 0.05bV-130270 in filter V on MJD  58045.180
16.65± 0.07bV-130270 in filter B on MJD  58045.180
16.30± 0.05bV-130270 in filter R on MJD  58045.180
----
58073.20 16.45± 0.04bV-130270 in filter V on MJD  58073.200
16.60± 0.06bV-130270 in filter B on MJD  58073.200
--------
58103.18 16.49± 0.05TbV-130270 in filter V on MJD  58103.180
------------
58108.11 16.48± 0.05bV-130270 in filter V on MJD  58108.110
16.60± 0.08bV-130270 in filter B on MJD  58108.110
---- 16.14± 0.07bV-130270 in filter I on MJD  58108.110
58312.39 16.46± 0.05bV-130270 in filter V on MJD  58312.390
16.66± 0.07bV-130270 in filter B on MJD  58312.390
--------
58317.37 16.50± 0.04bV-130270 in filter V on MJD  58317.370
16.63± 0.06bV-130270 in filter B on MJD  58317.370
16.29± 0.04bV-130270 in filter R on MJD  58317.370
----
58341.34 16.44± 0.07bV-130270 in filter V on MJD  58341.340
-------- 16.06± 0.07bV-130270 in filter I on MJD  58341.340
58342.40 16.48± 0.04bV-130270 in filter V on MJD  58342.400
16.64± 0.06bV-130270 in filter B on MJD  58342.400
16.30± 0.05bV-130270 in filter R on MJD  58342.400
----
58375.14 16.51± 0.04bV-130270 in filter V on MJD  58375.140
---- 16.29± 0.05bV-130270 in filter R on MJD  58375.140
----
58420.10 16.50± 0.04bV-130270 in filter V on MJD  58420.100
16.64± 0.06bV-130270 in filter B on MJD  58420.100
---- 16.14± 0.07bV-130270 in filter I on MJD  58420.100
58433.00 16.48± 0.05bV-130270 in filter V on MJD  58433.000
---- 16.28± 0.05bV-130270 in filter R on MJD  58433.000
15.97± 0.06bV-130270 in filter I on MJD  58433.000
58672.39 16.50± 0.07bV-130270 in filter V on MJD  58672.390
---- 16.32± 0.06bV-130270 in filter R on MJD  58672.390
16.17± 0.08bV-130270 in filter I on MJD  58672.390
58695.36 16.47± 0.05bV-130270 in filter V on MJD  58695.360
16.59± 0.05bV-130270 in filter B on MJD  58695.360
16.27± 0.04bV-130270 in filter R on MJD  58695.360
----
58757.17 16.48± 0.05bV-130270 in filter V on MJD  58757.170
---- 16.25± 0.05bV-130270 in filter R on MJD  58757.170
----
58784.14 16.52± 0.05AbV-130270 in filter V on MJD  58784.140
V-130270 in filter V on MJD  58784.140
16.64± 0.05bV-130270 in filter B on MJD  58784.140
---- 16.13± 0.07bV-130270 in filter I on MJD  58784.140
58812.22 16.44± 0.04bV-130270 in filter V on MJD  58812.220
-------- 16.12± 0.05bV-130270 in filter I on MJD  58812.220
58902.07 16.47± 0.04bV-130270 in filter V on MJD  58902.070
---- 16.27± 0.04bV-130270 in filter R on MJD  58902.070
----
59059.38 16.50± 0.05bV-130270 in filter V on MJD  59059.380
16.63± 0.05bV-130270 in filter B on MJD  59059.380
--------
59081.26 16.50± 0.05bV-130270 in filter V on MJD  59081.260
---- 16.33± 0.05bV-130270 in filter R on MJD  59081.260
----
59084.38-------- 16.26± 0.06TbV-130270 in filter R on MJD  59084.380
----
59161.07 16.48± 0.05bV-130270 in filter V on MJD  59161.070
16.64± 0.06bV-130270 in filter B on MJD  59161.070
16.28± 0.04bV-130270 in filter R on MJD  59161.070
----
59171.09 16.47± 0.04bV-130270 in filter V on MJD  59171.090
-------- 16.18± 0.06bV-130270 in filter I on MJD  59171.090
59227.12 16.49± 0.04AbV-130270 in filter V on MJD  59227.120
V-130270 in filter V on MJD  59227.120
16.64± 0.05AbV-130270 in filter B on MJD  59227.120
V-130270 in filter B on MJD  59227.120
16.26± 0.04AbV-130270 in filter R on MJD  59227.120
V-130270 in filter R on MJD  59227.120
16.12± 0.07bV-130270 in filter I on MJD  59227.120
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-130270Plot of color for V-130270

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 [0.10 mag]B [0.13 mag]R [0.12 mag]
B [0.10 mag]0.50 (23)
R [0.12 mag]0.62 (24)0.48 (16)
I [0.20 mag]0.12 (14)0.08 (8)0.17 (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-130270

Plot to assess correlation between bands for V-130270

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)
0.20 | 1.03
R
(I|R)
0.23 | 0.740.64 | 0.06
I
(I|R)
0.10 | 0.67-0.03 | 2.420.20 | 0.59

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