Color composite thumbnail image of M31-004057.03M31-004057.03 (J004057.03+405238.6)



Target Notes

Color composite thumbnail image of M31-004057.03

Classification: B[e]sg

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 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
56593.14 19.10± 0.08-M31-004057.03 in filter V on MJD  56593.140
19.49± 0.10-M31-004057.03 in filter B on MJD  56593.140
18.55± 0.07-M31-004057.03 in filter R on MJD  56593.140
----
56599.11 19.01± 0.06-M31-004057.03 in filter V on MJD  56599.110
19.47± 0.08-M31-004057.03 in filter B on MJD  56599.110
18.57± 0.06-M31-004057.03 in filter R on MJD  56599.110
----
57687.07 19.43± 0.10XM31-004057.03 in filter V on MJD  57687.070
19.78± 0.12XM31-004057.03 in filter B on MJD  57687.070
--------
57743.07 18.89± 0.05AM31-004057.03 in filter V on MJD  57743.070
M31-004057.03 in filter V on MJD  57743.070
19.27± 0.06AM31-004057.03 in filter B on MJD  57743.070
M31-004057.03 in filter B on MJD  57743.070
18.42± 0.04AM31-004057.03 in filter R on MJD  57743.070
M31-004057.03 in filter R on MJD  57743.070
18.11± 0.06AM31-004057.03 in filter I on MJD  57743.070
M31-004057.03 in filter I on MJD  57743.070
57963.32 18.77± 0.07-M31-004057.03 in filter V on MJD  57963.320
19.27± 0.08-M31-004057.03 in filter B on MJD  57963.320
---- 18.01± 0.08-M31-004057.03 in filter I on MJD  57963.320
58035.05 18.72± 0.08-M31-004057.03 in filter V on MJD  58035.050
---- 18.31± 0.08-M31-004057.03 in filter R on MJD  58035.050
----
58045.12 18.84± 0.07-M31-004057.03 in filter V on MJD  58045.120
-------- 18.15± 0.16-M31-004057.03 in filter I on MJD  58045.120
58073.10 18.89± 0.07-M31-004057.03 in filter V on MJD  58073.100
19.49± 0.10-M31-004057.03 in filter B on MJD  58073.100
--------
58098.16 18.82± 0.06-M31-004057.03 in filter V on MJD  58098.160
---- 18.35± 0.06-M31-004057.03 in filter R on MJD  58098.160
18.00± 0.08-M31-004057.03 in filter I on MJD  58098.160
58312.37 18.72± 0.07-M31-004057.03 in filter V on MJD  58312.370
19.16± 0.10-M31-004057.03 in filter B on MJD  58312.370
--------
58339.30 18.91± 0.07-M31-004057.03 in filter V on MJD  58339.300
---- 18.40± 0.06-M31-004057.03 in filter R on MJD  58339.300
18.10± 0.08-M31-004057.03 in filter I on MJD  58339.300
58341.32 19.02± 0.08-M31-004057.03 in filter V on MJD  58341.320
-------- 18.14± 0.10-M31-004057.03 in filter I on MJD  58341.320
58342.29 18.91± 0.09-M31-004057.03 in filter V on MJD  58342.290
19.43± 0.11-M31-004057.03 in filter B on MJD  58342.290
--------
58373.11 18.76± 0.08-M31-004057.03 in filter V on MJD  58373.110
19.14± 0.11-M31-004057.03 in filter B on MJD  58373.110
--------
58407.07 18.73± 0.07-M31-004057.03 in filter V on MJD  58407.070
---- 18.20± 0.09-M31-004057.03 in filter R on MJD  58407.070
----
58672.34 19.14± 0.08-M31-004057.03 in filter V on MJD  58672.340
19.52± 0.11-M31-004057.03 in filter B on MJD  58672.340
--------
58673.33 19.21± 0.05AM31-004057.03 in filter V on MJD  58673.330
M31-004057.03 in filter V on MJD  58673.330
19.54± 0.09-M31-004057.03 in filter B on MJD  58673.330
M31-004057.03 in filter B on MJD  58673.330
18.57± 0.06-M31-004057.03 in filter R on MJD  58673.330
18.20± 0.08-M31-004057.03 in filter I on MJD  58673.330
58696.33 19.00± 0.05-M31-004057.03 in filter V on MJD  58696.330
19.46± 0.07-M31-004057.03 in filter B on MJD  58696.330
18.57± 0.06-M31-004057.03 in filter R on MJD  58696.330
----
58750.16 18.90± 0.05-M31-004057.03 in filter V on MJD  58750.160
---- 18.46± 0.04-M31-004057.03 in filter R on MJD  58750.160
18.13± 0.08-M31-004057.03 in filter I on MJD  58750.160
58757.12 18.93± 0.06-M31-004057.03 in filter V on MJD  58757.120
---- 18.49± 0.06-M31-004057.03 in filter R on MJD  58757.120
----
58784.10 18.87± 0.04-M31-004057.03 in filter V on MJD  58784.100
19.29± 0.05-M31-004057.03 in filter B on MJD  58784.100
--------
58836.14 18.63± 0.06AM31-004057.03 in filter V on MJD  58836.140
M31-004057.03 in filter V on MJD  58836.140
---- 18.15± 0.05AM31-004057.03 in filter R on MJD  58836.140
M31-004057.03 in filter R on MJD  58836.140
17.82± 0.08AM31-004057.03 in filter I on MJD  58836.140
M31-004057.03 in filter I on MJD  58836.140
59019.37 19.22± 0.08-M31-004057.03 in filter V on MJD  59019.370
---- 18.65± 0.07-M31-004057.03 in filter R on MJD  59019.370
----
59056.32 18.86± 0.06AM31-004057.03 in filter V on MJD  59056.320
M31-004057.03 in filter V on MJD  59056.320
19.26± 0.07AM31-004057.03 in filter B on MJD  59056.320
M31-004057.03 in filter B on MJD  59056.320
---- 17.81± 0.07-M31-004057.03 in filter I on MJD  59056.320
59081.17 19.13± 0.08-M31-004057.03 in filter V on MJD  59081.170
---- 18.50± 0.06-M31-004057.03 in filter R on MJD  59081.170
18.32± 0.09-M31-004057.03 in filter I on MJD  59081.170
59082.26 19.02± 0.06-M31-004057.03 in filter V on MJD  59082.260
19.50± 0.07-M31-004057.03 in filter B on MJD  59082.260
18.49± 0.06-M31-004057.03 in filter R on MJD  59082.260
M31-004057.03 in filter R on MJD  59082.260
----
59131.13 18.95± 0.07-M31-004057.03 in filter V on MJD  59131.130
19.31± 0.09-M31-004057.03 in filter B on MJD  59131.130
--------
59136.05 18.87± 0.07-M31-004057.03 in filter V on MJD  59136.050
-------- 17.70± 0.08-M31-004057.03 in filter I on MJD  59136.050
59166.19 18.88± 0.05AM31-004057.03 in filter V on MJD  59166.190
M31-004057.03 in filter V on MJD  59166.190
19.42± 0.07-M31-004057.03 in filter B on MJD  59166.190
18.38± 0.05-M31-004057.03 in filter R on MJD  59166.190
17.75± 0.07-M31-004057.03 in filter I on MJD  59166.190
59194.14 18.98± 0.05-M31-004057.03 in filter V on MJD  59194.140
---- 18.39± 0.05-M31-004057.03 in filter R on MJD  59194.140
----
59379.38 18.63± 0.10-M31-004057.03 in filter V on MJD  59379.380
---- 18.00± 0.08-M31-004057.03 in filter R on MJD  59379.380
----
59382.36 18.75± 0.12-M31-004057.03 in filter V on MJD  59382.360
---- 18.10± 0.10-M31-004057.03 in filter R on MJD  59382.360
----
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 M31-004057.03Plot of color for M31-004057.03

Key for Plot Variability Photometry Table Target Notes


Variability

Plot/Graph Photometry Table Target Notes

It is likely that 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 [0.40 mag]B [0.59 mag]R [0.64 mag]
B [0.40 mag]0.73 (16)
R [0.64 mag]0.82 (19)0.45 (7)
I [0.61 mag]0.39 (13)0.09 (5)0.58 (8)

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 M31-004057.03

Plot to assess correlation between bands for M31-004057.03

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)
2.68 | 0.80
R
(I|R)
5.39 | 1.022.08 | 0.05
I
(I|R)
3.31 | 0.780.54 | 0.584.06 | 0.79

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