Color composite thumbnail image of M31-004259.31M31-004259.31 (J004259.30+410629.0)



Target Notes

Color composite thumbnail image of M31-004259.31

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 EDR3 (2020) 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
56142.34 17.45± 0.05TM31-004259.31 in filter V on MJD  56142.340
------------
56267.16-------- 16.74± 0.04TM31-004259.31 in filter R on MJD  56267.160
----
56537.17 17.07± 0.03-M31-004259.31 in filter V on MJD  56537.170
17.99± 0.04-M31-004259.31 in filter B on MJD  56537.170
16.71± 0.04-M31-004259.31 in filter R on MJD  56537.170
----
57633.38 17.60± 0.04-M31-004259.31 in filter V on MJD  57633.380
18.05± 0.04-M31-004259.31 in filter B on MJD  57633.380
16.89± 0.03-M31-004259.31 in filter R on MJD  57633.380
----
57638.25 17.05± 0.04-M31-004259.31 in filter V on MJD  57638.250
-------- 16.27± 0.07-M31-004259.31 in filter I on MJD  57638.250
57888.07 17.08± 0.08-M31-004259.31 in filter V on MJD  57888.070
18.19± 0.23XM31-004259.31 in filter B on MJD  57888.070
16.92± 0.08XM31-004259.31 in filter R on MJD  57888.070
----
57958.40 17.02± 0.04-M31-004259.31 in filter V on MJD  57958.400
-------- 16.27± 0.06-M31-004259.31 in filter I on MJD  57958.400
57963.41 17.15± 0.04-M31-004259.31 in filter V on MJD  57963.410
17.50± 0.06-M31-004259.31 in filter B on MJD  57963.410
16.68± 0.05-M31-004259.31 in filter R on MJD  57963.410
----
57988.26 17.09± 0.04-M31-004259.31 in filter V on MJD  57988.260
17.95± 0.04-M31-004259.31 in filter B on MJD  57988.260
17.05± 0.04-M31-004259.31 in filter R on MJD  57988.260
----
58067.16 17.20± 0.05-M31-004259.31 in filter V on MJD  58067.160
-------- 16.31± 0.06-M31-004259.31 in filter I on MJD  58067.160
58098.14 17.12± 0.04-M31-004259.31 in filter V on MJD  58098.140
17.73± 0.04-M31-004259.31 in filter B on MJD  58098.140
--------
58317.28 17.40± 0.04-M31-004259.31 in filter V on MJD  58317.280
18.17± 0.05-M31-004259.31 in filter B on MJD  58317.280
17.15± 0.05-M31-004259.31 in filter R on MJD  58317.280
----
58339.27 17.41± 0.04-M31-004259.31 in filter V on MJD  58339.270
-------- 16.48± 0.08-M31-004259.31 in filter I on MJD  58339.270
58342.27 17.02± 0.05-M31-004259.31 in filter V on MJD  58342.270
17.65± 0.04-M31-004259.31 in filter B on MJD  58342.270
--------
58373.09 17.53± 0.05-M31-004259.31 in filter V on MJD  58373.090
18.13± 0.06-M31-004259.31 in filter B on MJD  58373.090
--------
58671.35 17.35± 0.03AM31-004259.31 in filter V on MJD  58671.350
M31-004259.31 in filter V on MJD  58671.350
17.79± 0.04-M31-004259.31 in filter B on MJD  58671.350
16.73± 0.04-M31-004259.31 in filter R on MJD  58671.350
----
58695.41 17.17± 0.03-M31-004259.31 in filter V on MJD  58695.410
---- 16.81± 0.04-M31-004259.31 in filter R on MJD  58695.410
----
58750.11 17.01± 0.03-M31-004259.31 in filter V on MJD  58750.110
-------- 16.20± 0.05-M31-004259.31 in filter I on MJD  58750.110
58779.03 17.07± 0.03-M31-004259.31 in filter V on MJD  58779.030
17.68± 0.03-M31-004259.31 in filter B on MJD  58779.030
--------
58812.16 17.12± 0.03-M31-004259.31 in filter V on MJD  58812.160
---- 16.64± 0.03-M31-004259.31 in filter R on MJD  58812.160
----
59000.37 17.12± 0.06-M31-004259.31 in filter V on MJD  59000.370
---- 16.80± 0.04-M31-004259.31 in filter R on MJD  59000.370
----
59055.29 17.44± 0.06-M31-004259.31 in filter V on MJD  59055.290
17.89± 0.07-M31-004259.31 in filter B on MJD  59055.290
--------
59077.25 17.39± 0.07-M31-004259.31 in filter V on MJD  59077.250
---- 17.09± 0.05-M31-004259.31 in filter R on MJD  59077.250
16.63± 0.06-M31-004259.31 in filter I on MJD  59077.250
59131.11 17.07± 0.05-M31-004259.31 in filter V on MJD  59131.110
17.61± 0.05-M31-004259.31 in filter B on MJD  59131.110
--------
59166.14 17.01± 0.05-M31-004259.31 in filter V on MJD  59166.140
-------- 16.18± 0.06-M31-004259.31 in filter I on MJD  59166.140
59194.12 16.98± 0.03-M31-004259.31 in filter V on MJD  59194.120
---- 16.55± 0.04-M31-004259.31 in filter R on MJD  59194.120
----
59376.38 17.24± 0.07-M31-004259.31 in filter V on MJD  59376.380
17.77± 0.08-M31-004259.31 in filter B on MJD  59376.380
--------
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 M31-004259.31Plot of color for M31-004259.31

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 [0.66 mag]B [0.62 mag]R [0.60 mag]
B [0.66 mag]0.43 (13)
R [0.60 mag]0.31 (11)0.51 (6)
I [0.45 mag]0.87 (7)-.-- (0) -.-- (1)

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 M31-004259.31

Plot to assess correlation between bands for M31-004259.31

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)
12.70 | 0.93
R
(I|R)
10.58 | 1.0816.06 | 0.13
I
(I|R)
7.68 | 1.60--- | --- --- | ----

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