Color composite thumbnail image of M33-1M33-1 (J013323.76+302535.3)



Target Notes

Color composite thumbnail image of M33-1

Classification: -

Khan et al. 2012, object X. No blend 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
56140.40>19.130-M33-1 in filter V on MJD  56140.400
----> 18.23-M33-1 in filter R on MJD  56140.400
----
56599.22>19.340-M33-1 in filter V on MJD  56599.220
> 18.86-M33-1 in filter B on MJD  56599.220
> 19.41-M33-1 in filter R on MJD  56599.220
----
56982.22>19.410-M33-1 in filter V on MJD  56982.220
> 19.05-M33-1 in filter B on MJD  56982.220
> 19.52-M33-1 in filter R on MJD  56982.220
----
57035.14>17.860-M33-1 in filter V on MJD  57035.140
> 17.97-M33-1 in filter B on MJD  57035.140
> 19.42-M33-1 in filter R on MJD  57035.140
----
57310.16>19.310-M33-1 in filter V on MJD  57310.160
> 18.98-M33-1 in filter B on MJD  57310.160
> 19.40-M33-1 in filter R on MJD  57310.160
----
57328.19>19.410-M33-1 in filter V on MJD  57328.190
> 19.06-M33-1 in filter B on MJD  57328.190
> 19.50-M33-1 in filter R on MJD  57328.190
----
57406.10>17.890-M33-1 in filter V on MJD  57406.100
> 18.09-M33-1 in filter B on MJD  57406.100
> 17.95-M33-1 in filter R on MJD  57406.100
> 18.01-M33-1 in filter I on MJD  57406.100
57634.41>19.340-M33-1 in filter V on MJD  57634.410
> 19.00-M33-1 in filter B on MJD  57634.410
> 19.45-M33-1 in filter R on MJD  57634.410
----
57638.40>19.240-M33-1 in filter V on MJD  57638.400
M33-1 in filter V on MJD  57638.400
> 18.83-M33-1 in filter B on MJD  57638.400
> 19.32-M33-1 in filter R on MJD  57638.400
> 18.36-M33-1 in filter I on MJD  57638.400
M33-1 in filter I on MJD  57638.400
57988.43>19.320-M33-1 in filter V on MJD  57988.430
------------
58043.16>19.350-M33-1 in filter V on MJD  58043.160
> 19.00-M33-1 in filter B on MJD  58043.160
> 19.44-M33-1 in filter R on MJD  58043.160
> 18.47-M33-1 in filter I on MJD  58043.160
58108.17>19.020-M33-1 in filter V on MJD  58108.170
> 18.91-M33-1 in filter B on MJD  58108.170
----> 18.40-M33-1 in filter I on MJD  58108.170
58339.40>19.190-M33-1 in filter V on MJD  58339.400
> 18.88-M33-1 in filter B on MJD  58339.400
> 19.32-M33-1 in filter R on MJD  58339.400
----
58375.16>19.150-M33-1 in filter V on MJD  58375.160
--------> 18.30-M33-1 in filter I on MJD  58375.160
58433.02>19.190-M33-1 in filter V on MJD  58433.020
----> 19.33-M33-1 in filter R on MJD  58433.020
> 18.36-M33-1 in filter I on MJD  58433.020
58695.39>19.230-M33-1 in filter V on MJD  58695.390
----> 19.35-M33-1 in filter R on MJD  58695.390
----
58696.41>19.260-M33-1 in filter V on MJD  58696.410
> 18.93-M33-1 in filter B on MJD  58696.410
> 19.19-M33-1 in filter R on MJD  58696.410
M33-1 in filter R on MJD  58696.410
----
58757.17>19.240-M33-1 in filter V on MJD  58757.170
----> 19.32-M33-1 in filter R on MJD  58757.170
----
58784.14>19.260-M33-1 in filter V on MJD  58784.140
M33-1 in filter V on MJD  58784.140
----> 19.31-M33-1 in filter R on MJD  58784.140
> 18.46-M33-1 in filter I on MJD  58784.140
59059.40>19.250-M33-1 in filter V on MJD  59059.400
1000.00±-10.00-> 19.33-M33-1 in filter R on MJD  59059.400
> 18.43-M33-1 in filter I on MJD  59059.400
59081.34>19.250-M33-1 in filter V on MJD  59081.340
M33-1 in filter V on MJD  59081.340
> 18.93-M33-1 in filter B on MJD  59081.340
M33-1 in filter B on MJD  59081.340
> 19.37-M33-1 in filter R on MJD  59081.340
M33-1 in filter R on MJD  59081.340
> 18.39-M33-1 in filter I on MJD  59081.340
59082.38>19.250-M33-1 in filter V on MJD  59082.380
> 18.94-M33-1 in filter B on MJD  59082.380
M33-1 in filter B on MJD  59082.380
M33-1 in filter B on MJD  59082.380
> 19.35-M33-1 in filter R on MJD  59082.380
M33-1 in filter R on MJD  59082.380
M33-1 in filter R on MJD  59082.380
1000.00±-10.00-M33-1 in filter I on MJD  59082.380
59084.38--------> 19.36-M33-1 in filter R on MJD  59084.380
----
59161.14>19.160-M33-1 in filter V on MJD  59161.140
1000.00±-10.00-> 19.24-M33-1 in filter R on MJD  59161.140
> 18.33-M33-1 in filter I on MJD  59161.140
59171.15>19.310-M33-1 in filter V on MJD  59171.150
M33-1 in filter V on MJD  59171.150
> 18.97-M33-1 in filter B on MJD  59171.150
M33-1 in filter B on MJD  59171.150
> 19.37-M33-1 in filter R on MJD  59171.150
> 18.44-M33-1 in filter I on MJD  59171.150
M33-1 in filter I on MJD  59171.150
59227.14>19.190-M33-1 in filter V on MJD  59227.140
M33-1 in filter V on MJD  59227.140
> 18.84-M33-1 in filter B on MJD  59227.140
M33-1 in filter B on MJD  59227.140
> 19.31-M33-1 in filter R on MJD  59227.140
M33-1 in filter R on MJD  59227.140
> 17.90-M33-1 in filter I on MJD  59227.140
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 M33-1Plot of color for M33-1

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 M33-1

Plot to assess correlation between bands for M33-1

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