Color composite thumbnail image of V-001429V-001429 (J013227.78+302146.7)



Target Notes

Color composite thumbnail image of V-001429

Classification: foreground

No concerns.

Find In Simbad Query LGGS Massey (2016) at VizieR Query CAT WISE (Eisenhardt et al., 2020) at VizieR Query Gaia EDR3 (2020) at VizieR
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
57638.39 18.41± 0.04-V-001429 in filter V on MJD  57638.390
19.20± 0.06-V-001429 in filter B on MJD  57638.390
17.80± 0.04-V-001429 in filter R on MJD  57638.390
17.23± 0.07-V-001429 in filter I on MJD  57638.390
57988.43 18.31± 0.07TV-001429 in filter V on MJD  57988.430
------------
58339.40 18.33± 0.06-V-001429 in filter V on MJD  58339.400
19.10± 0.09-V-001429 in filter B on MJD  58339.400
17.77± 0.06-V-001429 in filter R on MJD  58339.400
----
58375.16 18.34± 0.06-V-001429 in filter V on MJD  58375.160
-------- 17.23± 0.10-V-001429 in filter I on MJD  58375.160
58695.39 18.27± 0.05-V-001429 in filter V on MJD  58695.390
---- 17.71± 0.04-V-001429 in filter R on MJD  58695.390
----
58750.22 18.30± 0.05-V-001429 in filter V on MJD  58750.220
19.10± 0.05-V-001429 in filter B on MJD  58750.220
---- 17.23± 0.08-V-001429 in filter I on MJD  58750.220
58784.14 18.26± 0.05-V-001429 in filter V on MJD  58784.140
---- 17.70± 0.04-V-001429 in filter R on MJD  58784.140
----
59081.36 18.29± 0.06-V-001429 in filter V on MJD  59081.360
19.07± 0.06-V-001429 in filter B on MJD  59081.360
17.73± 0.05-V-001429 in filter R on MJD  59081.360
17.19± 0.07-V-001429 in filter I on MJD  59081.360
59082.38 18.30± 0.06-V-001429 in filter V on MJD  59082.380
19.13± 0.04-V-001429 in filter B on MJD  59082.380
V-001429 in filter B on MJD  59082.380
17.70± 0.04-V-001429 in filter R on MJD  59082.380
V-001429 in filter R on MJD  59082.380
----
59084.25-------- 17.74± 0.04TV-001429 in filter R on MJD  59084.250
----
59161.14 18.31± 0.05-V-001429 in filter V on MJD  59161.140
---- 17.75± 0.04-V-001429 in filter R on MJD  59161.140
17.15± 0.09-V-001429 in filter I on MJD  59161.140
59171.14 18.31± 0.06-V-001429 in filter V on MJD  59171.140
19.06± 0.04-V-001429 in filter B on MJD  59171.140
---- 17.20± 0.07-V-001429 in filter I on MJD  59171.140
59227.12 18.25± 0.05-V-001429 in filter V on MJD  59227.120
19.13± 0.05-V-001429 in filter B on MJD  59227.120
17.71± 0.05-V-001429 in filter R 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-001429Plot of color for V-001429

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 [0.14 mag]B [0.17 mag]R [0.10 mag]
B [0.14 mag]0.31 (7)
R [0.10 mag]0.77 (8)0.22 (5)
I [0.08 mag]0.21 (6)0.52 (4)0.48 (3)

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-001429

Plot to assess correlation between bands for V-001429

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)
0.50 | 0.77
R
(I|R)
0.83 | 1.40-0.60 | 0.02
I
(I|R)
0.19 | 2.56--- | --- --- | ----

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By John C. Martin, University of Illinois Springfield Henry R. Barber Research Observatory

Generated on 2021-11-06 16:53:54 UT-5