Color composite thumbnail image of V-031584V-031584 (J013314.78+304559.2)



Target Notes

Color composite thumbnail image of V-031584

Classification: YSG

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 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
56140.39 18.27± 0.05-V-031584 in filter V on MJD  56140.390
---- 17.99± 0.18-V-031584 in filter R on MJD  56140.390
----
56593.16 18.33± 0.04-V-031584 in filter V on MJD  56593.160
18.60± 0.05-V-031584 in filter B on MJD  56593.160
--------
56599.19 18.30± 0.05-V-031584 in filter V on MJD  56599.190
18.69± 0.06-V-031584 in filter B on MJD  56599.190
17.88± 0.07-V-031584 in filter R on MJD  56599.190
----
56976.19 18.27± 0.06-V-031584 in filter V on MJD  56976.190
18.68± 0.07-V-031584 in filter B on MJD  56976.190
17.84± 0.07-V-031584 in filter R on MJD  56976.190
----
57328.16 18.27± 0.04-V-031584 in filter V on MJD  57328.160
18.71± 0.05-V-031584 in filter B on MJD  57328.160
17.87± 0.04-V-031584 in filter R on MJD  57328.160
----
57634.38 18.32± 0.05-V-031584 in filter V on MJD  57634.380
18.79± 0.06-V-031584 in filter B on MJD  57634.380
17.86± 0.07-V-031584 in filter R on MJD  57634.380
17.65± 0.10-V-031584 in filter I on MJD  57634.380
57964.40 18.25± 0.04-V-031584 in filter V on MJD  57964.400
-------- 17.56± 0.08AV-031584 in filter I on MJD  57964.400
V-031584 in filter I on MJD  57964.400
57988.41 18.31± 0.05-V-031584 in filter V on MJD  57988.410
18.60± 0.06-V-031584 in filter B on MJD  57988.410
--------
58043.11 18.32± 0.05AV-031584 in filter V on MJD  58043.110
V-031584 in filter V on MJD  58043.110
18.76± 0.06-V-031584 in filter B on MJD  58043.110
17.75± 0.04AV-031584 in filter R on MJD  58043.110
V-031584 in filter R on MJD  58043.110
17.43± 0.08-V-031584 in filter I on MJD  58043.110
58073.22 18.17± 0.06-V-031584 in filter V on MJD  58073.220
18.55± 0.06-V-031584 in filter B on MJD  58073.220
--------
58103.17 18.31± 0.06-V-031584 in filter V on MJD  58103.170
18.67± 0.05-V-031584 in filter B on MJD  58103.170
--------
58108.11 18.28± 0.05AV-031584 in filter V on MJD  58108.110
V-031584 in filter V on MJD  58108.110
18.67± 0.06AV-031584 in filter B on MJD  58108.110
V-031584 in filter B on MJD  58108.110
---- 17.61± 0.08AV-031584 in filter I on MJD  58108.110
V-031584 in filter I on MJD  58108.110
58316.35 18.19± 0.06-V-031584 in filter V on MJD  58316.350
18.73± 0.05-V-031584 in filter B on MJD  58316.350
--------
58317.39 18.24± 0.05-V-031584 in filter V on MJD  58317.390
---- 17.94± 0.08-V-031584 in filter R on MJD  58317.390
----
58341.39 18.30± 0.06AV-031584 in filter V on MJD  58341.390
V-031584 in filter V on MJD  58341.390
18.71± 0.09-V-031584 in filter B on MJD  58341.390
17.93± 0.08-V-031584 in filter R on MJD  58341.390
17.67± 0.10AV-031584 in filter I on MJD  58341.390
V-031584 in filter I on MJD  58341.390
58373.15 18.26± 0.07-V-031584 in filter V on MJD  58373.150
18.73± 0.08-V-031584 in filter B on MJD  58373.150
--------
58673.38 18.29± 0.04-V-031584 in filter V on MJD  58673.380
18.78± 0.06-V-031584 in filter B on MJD  58673.380
--------
58750.19 18.32± 0.04-V-031584 in filter V on MJD  58750.190
---- 17.85± 0.05-V-031584 in filter R on MJD  58750.190
----
58779.18 18.19± 0.06-V-031584 in filter V on MJD  58779.180
18.84± 0.09-V-031584 in filter B on MJD  58779.180
--------
58902.05 18.34± 0.04-V-031584 in filter V on MJD  58902.050
-------- 17.72± 0.08-V-031584 in filter I on MJD  58902.050
59056.38 18.33± 0.04-V-031584 in filter V on MJD  59056.380
18.76± 0.07-V-031584 in filter B on MJD  59056.380
17.87± 0.05-V-031584 in filter R on MJD  59056.380
17.66± 0.08-V-031584 in filter I on MJD  59056.380
59082.34 18.27± 0.04AV-031584 in filter V on MJD  59082.340
V-031584 in filter V on MJD  59082.340
18.71± 0.06AV-031584 in filter B on MJD  59082.340
V-031584 in filter B on MJD  59082.340
17.84± 0.05AV-031584 in filter R on MJD  59082.340
V-031584 in filter R on MJD  59082.340
----
59084.29-------- 17.84± 0.06TV-031584 in filter R on MJD  59084.290
----
59161.11 18.30± 0.04-V-031584 in filter V on MJD  59161.110
18.83± 0.04-V-031584 in filter B on MJD  59161.110
17.84± 0.05-V-031584 in filter R on MJD  59161.110
----
59171.09 18.23± 0.05AV-031584 in filter V on MJD  59171.090
V-031584 in filter V on MJD  59171.090
18.76± 0.07AV-031584 in filter B on MJD  59171.090
V-031584 in filter B on MJD  59171.090
17.68± 0.07-V-031584 in filter R on MJD  59171.090
17.62± 0.09AV-031584 in filter I on MJD  59171.090
V-031584 in filter I on MJD  59171.090
59227.08 18.30± 0.04AV-031584 in filter V on MJD  59227.080
V-031584 in filter V on MJD  59227.080
18.72± 0.05AV-031584 in filter B on MJD  59227.080
V-031584 in filter B on MJD  59227.080
17.84± 0.05-V-031584 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-031584Plot of color for V-031584

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 [0.29 mag]B [0.18 mag]R [0.30 mag]
B [0.29 mag]0.00 (20)
R [0.30 mag]0.01 (14)0.08 (11)
I [0.30 mag]0.04 (8)0.01 (6)0.32 (5)

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-031584

Plot to assess correlation between bands for V-031584

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)
0.08 | 1.36
R
(I|R)
0.06 | 0.710.16 | 0.04
I
(I|R)
0.24 | 0.90-0.07 | 0.611.19 | 1.46

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