Color composite thumbnail image of M31-004318.57M31-004318.57 (J004318.57+415311.1)



Target Notes

Color composite thumbnail image of M31-004318.57

Classification: foreground

No blend concerns

Find In Simbad Query LGGS Massey (2016) at VizieR Query CAT WISE (Eisenhardt et al., 2020) at VizieR Query Gaia DR3 (2022) at VizieR
Query Kaluzny et al. (1998) M31 Survey at VizieR
Query POINT-AGAPE An et al. (2004) M31 Survey at VizieR


Photometry Table

Download table (txt) Key to Flags in Table Key For Images Plot/Graph Variability
MJDV*ImageB*ImageR*ImagesI*Images
56142.35 16.53± 0.03TM31-004318.57 in filter V on MJD  56142.350
------------
56267.17-------- 16.07± 0.04TM31-004318.57 in filter R on MJD  56267.170
----
56537.22 16.53± 0.04-M31-004318.57 in filter V on MJD  56537.220
17.32± 0.03-M31-004318.57 in filter B on MJD  56537.220
16.04± 0.04-M31-004318.57 in filter R on MJD  56537.220
----
56593.08 16.55± 0.03-M31-004318.57 in filter V on MJD  56593.080
---- 16.09± 0.03-M31-004318.57 in filter R on MJD  56593.080
----
56923.11 16.54± 0.04-M31-004318.57 in filter V on MJD  56923.110
17.35± 0.04-M31-004318.57 in filter B on MJD  56923.110
16.06± 0.04-M31-004318.57 in filter R on MJD  56923.110
----
57227.36 16.52± 0.04-M31-004318.57 in filter V on MJD  57227.360
17.34± 0.03-M31-004318.57 in filter B on MJD  57227.360
--------
57282.18 16.55± 0.03-M31-004318.57 in filter V on MJD  57282.180
17.33± 0.04-M31-004318.57 in filter B on MJD  57282.180
16.05± 0.04-M31-004318.57 in filter R on MJD  57282.180
----
57314.13 16.53± 0.03AM31-004318.57 in filter V on MJD  57314.130
M31-004318.57 in filter V on MJD  57314.130
-------- 15.61± 0.04AM31-004318.57 in filter I on MJD  57314.130
M31-004318.57 in filter I on MJD  57314.130
57633.25 16.54± 0.04-M31-004318.57 in filter V on MJD  57633.250
17.34± 0.04-M31-004318.57 in filter B on MJD  57633.250
16.05± 0.03-M31-004318.57 in filter R on MJD  57633.250
----
57635.39 16.50± 0.06AM31-004318.57 in filter V on MJD  57635.390
M31-004318.57 in filter V on MJD  57635.390
17.31± 0.08-M31-004318.57 in filter B on MJD  57635.390
16.02± 0.07-M31-004318.57 in filter R on MJD  57635.390
15.60± 0.06AM31-004318.57 in filter I on MJD  57635.390
M31-004318.57 in filter I on MJD  57635.390
57958.35 16.53± 0.04-M31-004318.57 in filter V on MJD  57958.350
---- 16.04± 0.04-M31-004318.57 in filter R on MJD  57958.350
15.61± 0.04-M31-004318.57 in filter I on MJD  57958.350
57963.38 16.54± 0.04-M31-004318.57 in filter V on MJD  57963.380
17.34± 0.04-M31-004318.57 in filter B on MJD  57963.380
--------
58067.17 16.51± 0.03-M31-004318.57 in filter V on MJD  58067.170
-------- 15.59± 0.04-M31-004318.57 in filter I on MJD  58067.170
58312.35 16.53± 0.04-M31-004318.57 in filter V on MJD  58312.350
17.32± 0.04-M31-004318.57 in filter B on MJD  58312.350
--------
58341.28 16.56± 0.04-M31-004318.57 in filter V on MJD  58341.280
---- 16.11± 0.04-M31-004318.57 in filter R on MJD  58341.280
15.69± 0.04-M31-004318.57 in filter I on MJD  58341.280
58366.16 16.51± 0.05-M31-004318.57 in filter V on MJD  58366.160
17.28± 0.04-M31-004318.57 in filter B on MJD  58366.160
--------
58433.11 16.52± 0.05-M31-004318.57 in filter V on MJD  58433.110
17.30± 0.05-M31-004318.57 in filter B on MJD  58433.110
--------
58750.10 16.53± 0.03-M31-004318.57 in filter V on MJD  58750.100
17.34± 0.03-M31-004318.57 in filter B on MJD  58750.100
--------
58779.07 16.54± 0.03-M31-004318.57 in filter V on MJD  58779.070
---- 16.04± 0.04-M31-004318.57 in filter R on MJD  58779.070
----
59019.33 16.48± 0.05-M31-004318.57 in filter V on MJD  59019.330
17.34± 0.04-M31-004318.57 in filter B on MJD  59019.330
--------
59055.30 16.53± 0.03-M31-004318.57 in filter V on MJD  59055.300
---- 16.04± 0.03-M31-004318.57 in filter R on MJD  59055.300
15.61± 0.04-M31-004318.57 in filter I on MJD  59055.300
59082.20 16.51± 0.03-M31-004318.57 in filter V on MJD  59082.200
17.33± 0.03-M31-004318.57 in filter B on MJD  59082.200
16.07± 0.02-M31-004318.57 in filter R on MJD  59082.200
----
59131.07 16.51± 0.03-M31-004318.57 in filter V on MJD  59131.070
---- 16.07± 0.03-M31-004318.57 in filter R on MJD  59131.070
----
59166.09 16.55± 0.03-M31-004318.57 in filter V on MJD  59166.090
-------- 15.67± 0.04-M31-004318.57 in filter I on MJD  59166.090
59194.09 16.52± 0.03-M31-004318.57 in filter V on MJD  59194.090
17.34± 0.03-M31-004318.57 in filter B on MJD  59194.090
--------
59379.35 16.52± 0.04-M31-004318.57 in filter V on MJD  59379.350
---- 16.07± 0.03-M31-004318.57 in filter R on MJD  59379.350
----
59409.40 16.59± 0.04-M31-004318.57 in filter V on MJD  59409.400
17.39± 0.14XM31-004318.57 in filter B on MJD  59409.400
--------
59442.26 16.54± 0.03-M31-004318.57 in filter V on MJD  59442.260
---- 16.08± 0.03-M31-004318.57 in filter R on MJD  59442.260
15.67± 0.04-M31-004318.57 in filter I on MJD  59442.260
59467.16 16.52± 0.03-M31-004318.57 in filter V on MJD  59467.160
17.33± 0.03-M31-004318.57 in filter B on MJD  59467.160
--------
59522.09 16.53± 0.03-M31-004318.57 in filter V on MJD  59522.090
---- 16.06± 0.03-M31-004318.57 in filter R on MJD  59522.090
----
59546.09 16.53± 0.03-M31-004318.57 in filter V on MJD  59546.090
17.34± 0.03-M31-004318.57 in filter B on MJD  59546.090
--------
59583.09 16.52± 0.04-M31-004318.57 in filter V on MJD  59583.090
-------- 15.62± 0.04-M31-004318.57 in filter I on MJD  59583.090
59753.32 16.51± 0.04-M31-004318.57 in filter V on MJD  59753.320
17.30± 0.04-M31-004318.57 in filter B on MJD  59753.320
--------
59816.18 16.53± 0.03-M31-004318.57 in filter V on MJD  59816.180
---- 16.08± 0.03-M31-004318.57 in filter R on MJD  59816.180
----
59848.06 16.54± 0.03-M31-004318.57 in filter V on MJD  59848.060
-------- 15.60± 0.04-M31-004318.57 in filter I on MJD  59848.060
59854.14 16.55± 0.03-M31-004318.57 in filter V on MJD  59854.140
17.36± 0.03-M31-004318.57 in filter B on MJD  59854.140
16.07± 0.03-M31-004318.57 in filter R on MJD  59854.140
----
59879.09 16.53± 0.03-M31-004318.57 in filter V on MJD  59879.090
-------- 15.68± 0.04-M31-004318.57 in filter I on MJD  59879.090
59905.12 16.57± 0.03-M31-004318.57 in filter V on MJD  59905.120
17.36± 0.03-M31-004318.57 in filter B on MJD  59905.120
16.10± 0.03-M31-004318.57 in filter R on MJD  59905.120
----
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 M31-004318.57Plot of color for M31-004318.57

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 [0.08 mag]B [0.11 mag]R [0.09 mag]
B [0.08 mag]0.27 (19)
R [0.09 mag]0.43 (18)0.71 (8)
I [0.11 mag]0.43 (11)-.-- (1) 0.95 (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 M31-004318.57

Plot to assess correlation between bands for M31-004318.57

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 | 0.95
R
(I|R)
0.22 | 0.89-0.95 | 0.01
I
(I|R)
0.27 | 0.41--- | --- 0.78 | 0.81

Back to catalog index


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

Generated on 2023-08-14 14:15:12 UT-5