Color composite thumbnail image of V-135855V-135855 (J013429.44+305312.2)



Target Notes

Color composite thumbnail image of V-135855

Classification: -

Three LGGS stars combine to at least two magnitudes brighter 3 arcseconds E.

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
57638.35>19.210-V-135855 in filter V on MJD  57638.350
> 18.86-V-135855 in filter B on MJD  57638.350
> 19.34-V-135855 in filter R on MJD  57638.350
> 18.42-V-135855 in filter I on MJD  57638.350
57964.37>19.290-V-135855 in filter V on MJD  57964.370
> 18.94-V-135855 in filter B on MJD  57964.370
> 19.38-V-135855 in filter R on MJD  57964.370
> 18.43-V-135855 in filter I on MJD  57964.370
58045.15>19.300-V-135855 in filter V on MJD  58045.150
> 19.00-V-135855 in filter B on MJD  58045.150
> 19.44-V-135855 in filter R on MJD  58045.150
----
58073.18>19.320-V-135855 in filter V on MJD  58073.180
> 18.99-V-135855 in filter B on MJD  58073.180
--------
58103.14>19.350-V-135855 in filter V on MJD  58103.140
--------> 18.13-V-135855 in filter I on MJD  58103.140
58316.38>19.190-V-135855 in filter V on MJD  58316.380
> 18.87-V-135855 in filter B on MJD  58316.380
> 19.33-V-135855 in filter R on MJD  58316.380
> 18.39-V-135855 in filter I on MJD  58316.380
58317.39>18.990-V-135855 in filter V on MJD  58317.390
----> 19.20-V-135855 in filter R on MJD  58317.390
V-135855 in filter R on MJD  58317.390
----
58341.40>18.980-V-135855 in filter V on MJD  58341.400
> 18.66-V-135855 in filter B on MJD  58341.400
> 19.21-V-135855 in filter R on MJD  58341.400
> 18.24-V-135855 in filter I on MJD  58341.400
58342.36>18.810-V-135855 in filter V on MJD  58342.360
> 18.29-V-135855 in filter B on MJD  58342.360
V-135855 in filter B on MJD  58342.360
> 18.85-V-135855 in filter R on MJD  58342.360
V-135855 in filter R on MJD  58342.360
> 18.05-V-135855 in filter I on MJD  58342.360
V-135855 in filter I on MJD  58342.360
58403.15>19.250-V-135855 in filter V on MJD  58403.150
--------> 18.37-V-135855 in filter I on MJD  58403.150
58420.06>19.170-V-135855 in filter V on MJD  58420.060
> 18.85-V-135855 in filter B on MJD  58420.060
> 19.34-V-135855 in filter R on MJD  58420.060
> 18.36-V-135855 in filter I on MJD  58420.060
58696.39>19.230-V-135855 in filter V on MJD  58696.390
> 18.93-V-135855 in filter B on MJD  58696.390
> 19.40-V-135855 in filter R on MJD  58696.390
----
58779.15>19.220-V-135855 in filter V on MJD  58779.150
----> 19.42-V-135855 in filter R on MJD  58779.150
> 18.37-V-135855 in filter I on MJD  58779.150
59081.33>19.220-V-135855 in filter V on MJD  59081.330
> 18.95-V-135855 in filter B on MJD  59081.330
> 19.38-V-135855 in filter R on MJD  59081.330
----
59082.35>19.260-V-135855 in filter V on MJD  59082.350
> 18.96-V-135855 in filter B on MJD  59082.350
V-135855 in filter B on MJD  59082.350
> 19.39-V-135855 in filter R on MJD  59082.350
V-135855 in filter R on MJD  59082.350
----
59084.21--------> 19.24-V-135855 in filter R on MJD  59084.210
----
59171.07>19.200-V-135855 in filter V on MJD  59171.070
> 18.94-V-135855 in filter B on MJD  59171.070
> 19.32-V-135855 in filter R on MJD  59171.070
> 18.38-V-135855 in filter I on MJD  59171.070
59227.06>19.270-V-135855 in filter V on MJD  59227.060
> 18.97-V-135855 in filter B on MJD  59227.060
> 19.37-V-135855 in filter R on MJD  59227.060
----
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-135855Plot of color for V-135855

Key for Plot Variability Photometry Table Target Notes


Variability

Plot/Graph Photometry Table Target Notes

There are not yet enough observations (fewer than three epochs) of this star to reliably determine if it could be variable or not

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 [0.00 mag]B [0.00 mag]R [0.00 mag]
B [0.00 mag]-.-- (0)
R [0.00 mag]-.-- (0)-.-- (0)
I [0.00 mag]-.-- (0)-.-- (0) -.-- (0)

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-135855

Plot to assess correlation between bands for V-135855

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)
--- | ---
R
(I|R)
--- | ------ | ---
I
(I|R)
--- | ------ | --- --- | ----

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