Color composite thumbnail image of M31-004434.65M31-004434.65 (J004434.64+412503.5)


Target Notes

Color composite thumbnail image of M31-004434.65

Classification: OB-Supergiant

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 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
56142.33 16.69± 0.06TM31-004434.65 in filter V on MJD 56142.330
------------
56267.14-------- 16.63± 0.05TM31-004434.65 in filter R on MJD 56267.140
----
56490.38 16.68± 0.04TM31-004434.65 in filter V on MJD 56490.380
------------
56536.26 16.68± 0.05-M31-004434.65 in filter V on MJD 56536.260
---- 16.61± 0.06-M31-004434.65 in filter R on MJD 56536.260
----
56537.20 16.68± 0.05-M31-004434.65 in filter V on MJD 56537.200
 16.67± 0.07-M31-004434.65 in filter B on MJD 56537.200
--------
56915.14 16.62± 0.03AM31-004434.65 in filter V on MJD 56915.140
M31-004434.65 in filter V on MJD 56915.140
 16.61± 0.05AM31-004434.65 in filter B on MJD 56915.140
M31-004434.65 in filter B on MJD 56915.140
 16.54± 0.04AM31-004434.65 in filter R on MJD 56915.140
M31-004434.65 in filter R on MJD 56915.140
----
57227.33 16.68± 0.04AM31-004434.65 in filter V on MJD 57227.330
M31-004434.65 in filter V on MJD 57227.330
 16.67± 0.04AM31-004434.65 in filter B on MJD 57227.330
M31-004434.65 in filter B on MJD 57227.330
 16.60± 0.04AM31-004434.65 in filter R on MJD 57227.330
M31-004434.65 in filter R on MJD 57227.330
----
57310.09 16.64± 0.03AM31-004434.65 in filter V on MJD 57310.090
M31-004434.65 in filter V on MJD 57310.090
-------- 16.44± 0.06AM31-004434.65 in filter I on MJD 57310.090
M31-004434.65 in filter I on MJD 57310.090
57633.28 16.66± 0.04-M31-004434.65 in filter V on MJD 57633.280
 16.64± 0.04-M31-004434.65 in filter B on MJD 57633.280
 16.55± 0.04-M31-004434.65 in filter R on MJD 57633.280
----
57635.35 16.64± 0.05-M31-004434.65 in filter V on MJD 57635.350
-------- 16.49± 0.06-M31-004434.65 in filter I on MJD 57635.350
57638.27 16.68± 0.05-M31-004434.65 in filter V on MJD 57638.270
-------- 16.55± 0.04-M31-004434.65 in filter I on MJD 57638.270
57928.34 16.64± 0.04AM31-004434.65 in filter V on MJD 57928.340
M31-004434.65 in filter V on MJD 57928.340
 16.62± 0.05AM31-004434.65 in filter B on MJD 57928.340
M31-004434.65 in filter B on MJD 57928.340
 16.55± 0.05AM31-004434.65 in filter R on MJD 57928.340
M31-004434.65 in filter R on MJD 57928.340
 16.43± 0.07AM31-004434.65 in filter I on MJD 57928.340
M31-004434.65 in filter I on MJD 57928.340
57958.29 16.68± 0.04-M31-004434.65 in filter V on MJD 57958.290
 16.68± 0.04-M31-004434.65 in filter B on MJD 57958.290
---- 16.56± 0.05-M31-004434.65 in filter I on MJD 57958.290
57963.25 16.66± 0.06TM31-004434.65 in filter V on MJD 57963.250
------------
58035.03 16.62± 0.04-M31-004434.65 in filter V on MJD 58035.030
---- 16.52± 0.04-M31-004434.65 in filter R on MJD 58035.030
----
58043.05 16.67± 0.04AM31-004434.65 in filter V on MJD 58043.050
M31-004434.65 in filter V on MJD 58043.050
 16.66± 0.05AM31-004434.65 in filter B on MJD 58043.050
M31-004434.65 in filter B on MJD 58043.050
 16.56± 0.04-M31-004434.65 in filter R on MJD 58043.050
 16.58± 0.05-M31-004434.65 in filter I on MJD 58043.050
58073.09 16.66± 0.06-M31-004434.65 in filter V on MJD 58073.090
 16.59± 0.07-M31-004434.65 in filter B on MJD 58073.090
--------
58098.09 16.71± 0.04-M31-004434.65 in filter V on MJD 58098.090
 16.70± 0.04-M31-004434.65 in filter B on MJD 58098.090
 16.62± 0.03AM31-004434.65 in filter R on MJD 58098.090
M31-004434.65 in filter R on MJD 58098.090
----
58312.29 16.76± 0.04-M31-004434.65 in filter V on MJD 58312.290
 16.78± 0.04-M31-004434.65 in filter B on MJD 58312.290
 16.66± 0.04-M31-004434.65 in filter R on MJD 58312.290
----
58316.26 16.68± 0.04-M31-004434.65 in filter V on MJD 58316.260
-------- 16.54± 0.04-M31-004434.65 in filter I on MJD 58316.260
58341.23 16.75± 0.05-M31-004434.65 in filter V on MJD 58341.230
 16.77± 0.05-M31-004434.65 in filter B on MJD 58341.230
--------
58366.12 16.68± 0.03-M31-004434.65 in filter V on MJD 58366.120
 16.70± 0.04-M31-004434.65 in filter B on MJD 58366.120
--------
58375.12 16.72± 0.04-M31-004434.65 in filter V on MJD 58375.120
---- 16.62± 0.03-M31-004434.65 in filter R on MJD 58375.120
----
58403.08 16.73± 0.04-M31-004434.65 in filter V on MJD 58403.080
-------- 16.62± 0.06-M31-004434.65 in filter I on MJD 58403.080
58433.09 16.68± 0.06-M31-004434.65 in filter V on MJD 58433.090
 16.65± 0.06-M31-004434.65 in filter B on MJD 58433.090
 16.59± 0.06-M31-004434.65 in filter R on MJD 58433.090
----
58671.29 16.72± 0.07-M31-004434.65 in filter V on MJD 58671.290
 16.78± 0.06-M31-004434.65 in filter B on MJD 58671.290
--------
58673.29 16.75± 0.08-M31-004434.65 in filter V on MJD 58673.290
---- 16.65± 0.07-M31-004434.65 in filter R on MJD 58673.290
 16.58± 0.08-M31-004434.65 in filter I on MJD 58673.290
58696.30 16.67± 0.07-M31-004434.65 in filter V on MJD 58696.300
 16.67± 0.07-M31-004434.65 in filter B on MJD 58696.300
 16.59± 0.08-M31-004434.65 in filter R on MJD 58696.300
----
58750.07 16.68± 0.07-M31-004434.65 in filter V on MJD 58750.070
 16.70± 0.06-M31-004434.65 in filter B on MJD 58750.070
--------
58779.05 16.70± 0.06-M31-004434.65 in filter V on MJD 58779.050
---- 16.64± 0.03-M31-004434.65 in filter R on MJD 58779.050
----
58812.07 16.67± 0.08-M31-004434.65 in filter V on MJD 58812.070
---- 16.58± 0.08-M31-004434.65 in filter R on MJD 58812.070
----
59000.39 16.64± 0.07-M31-004434.65 in filter V on MJD 59000.390
---- 16.58± 0.10-M31-004434.65 in filter R on MJD 59000.390
----
59055.31 16.67± 0.07-M31-004434.65 in filter V on MJD 59055.310
---- 16.58± 0.08-M31-004434.65 in filter R on MJD 59055.310
----
59077.20 16.70± 0.07-M31-004434.65 in filter V on MJD 59077.200
 16.68± 0.07-M31-004434.65 in filter B on MJD 59077.200
 16.61± 0.07-M31-004434.65 in filter R on MJD 59077.200
 16.56± 0.10-M31-004434.65 in filter I on MJD 59077.200
59131.09 16.71± 0.07-M31-004434.65 in filter V on MJD 59131.090
---- 16.61± 0.07-M31-004434.65 in filter R on MJD 59131.090
----
59166.12 16.71± 0.07-M31-004434.65 in filter V on MJD 59166.120
-------- 16.55± 0.09-M31-004434.65 in filter I on MJD 59166.120
59194.11 16.68± 0.07-M31-004434.65 in filter V on MJD 59194.110
 16.66± 0.07-M31-004434.65 in filter B on MJD 59194.110
--------
59376.35 16.62± 0.07-M31-004434.65 in filter V on MJD 59376.350
 16.66± 0.07-M31-004434.65 in filter B on MJD 59376.350
--------
59409.37 16.72± 0.07-M31-004434.65 in filter V on MJD 59409.370
---- 16.62± 0.07-M31-004434.65 in filter R on MJD 59409.370
----
59441.26 16.71± 0.07-M31-004434.65 in filter V on MJD 59441.260
 16.72± 0.07-M31-004434.65 in filter B on MJD 59441.260
---- 16.65± 0.09-M31-004434.65 in filter I on MJD 59441.260
59467.11 16.70± 0.07-M31-004434.65 in filter V on MJD 59467.110
---- 16.57± 0.06-M31-004434.65 in filter R on MJD 59467.110
----
59522.04 16.73± 0.07-M31-004434.65 in filter V on MJD 59522.040
 16.72± 0.07-M31-004434.65 in filter B on MJD 59522.040
---- 16.53± 0.11-M31-004434.65 in filter I on MJD 59522.040
59546.05 16.68± 0.07-M31-004434.65 in filter V on MJD 59546.050
---- 16.60± 0.07-M31-004434.65 in filter R on MJD 59546.050
----
59583.10 16.62± 0.07-M31-004434.65 in filter V on MJD 59583.100
 16.63± 0.07-M31-004434.65 in filter B on MJD 59583.100
--------
59739.36 16.68± 0.07-M31-004434.65 in filter V on MJD 59739.360
 16.70± 0.07-M31-004434.65 in filter B on MJD 59739.360
 16.59± 0.07-M31-004434.65 in filter R on MJD 59739.360
----
59816.14 16.63± 0.06-M31-004434.65 in filter V on MJD 59816.140
-------- 16.39± 0.07-M31-004434.65 in filter I on MJD 59816.140
59851.09 16.69± 0.07-M31-004434.65 in filter V on MJD 59851.090
 16.68± 0.07-M31-004434.65 in filter B on MJD 59851.090
 16.57± 0.07-M31-004434.65 in filter R on MJD 59851.090
----
59879.03 16.64± 0.07-M31-004434.65 in filter V on MJD 59879.030
-------- 16.60± 0.07-M31-004434.65 in filter I on MJD 59879.030
59905.07 16.69± 0.07-M31-004434.65 in filter V on MJD 59905.070
 16.67± 0.06-M31-004434.65 in filter B on MJD 59905.070
 16.62± 0.07-M31-004434.65 in filter R on MJD 59905.070
----
60147.26 16.72± 0.07-M31-004434.65 in filter V on MJD 60147.260
 16.69± 0.07-M31-004434.65 in filter B on MJD 60147.260
--------
60172.17 16.68± 0.07-M31-004434.65 in filter V on MJD 60172.170
 16.68± 0.07-M31-004434.65 in filter B on MJD 60172.170
 16.59± 0.06-M31-004434.65 in filter R on MJD 60172.170
 16.43± 0.07-M31-004434.65 in filter I on MJD 60172.170
60202.10 16.72± 0.06-M31-004434.65 in filter V on MJD 60202.100
 16.69± 0.07-M31-004434.65 in filter B on MJD 60202.100
--------
60251.01 16.67± 0.08-M31-004434.65 in filter V on MJD 60251.010
-------- 16.56± 0.07-M31-004434.65 in filter I on MJD 60251.010
60290.10 16.71± 0.07-M31-004434.65 in filter V on MJD 60290.100
---- 16.59± 0.07-M31-004434.65 in filter R on MJD 60290.100
----
60469.35 16.65± 0.06-M31-004434.65 in filter V on MJD 60469.350
 16.63± 0.07-M31-004434.65 in filter B on MJD 60469.350
--------
60504.31 16.69± 0.07-M31-004434.65 in filter V on MJD 60504.310
---- 16.60± 0.06-M31-004434.65 in filter R on MJD 60504.310
----
60529.23 16.72± 0.07-M31-004434.65 in filter V on MJD 60529.230
-------- 16.52± 0.07-M31-004434.65 in filter I on MJD 60529.230
60555.13 16.71± 0.06-M31-004434.65 in filter V on MJD 60555.130
 16.69± 0.06-M31-004434.65 in filter B on MJD 60555.130
 16.60± 0.05-M31-004434.65 in filter R on MJD 60555.130
----
60587.10 16.70± 0.06-M31-004434.65 in filter V on MJD 60587.100
-------- 16.53± 0.07-M31-004434.65 in filter I on MJD 60587.100
60649.08 16.71± 0.07-M31-004434.65 in filter V on MJD 60649.080
 16.70± 0.07-M31-004434.65 in filter B on MJD 60649.080
 16.61± 0.07-M31-004434.65 in filter R on MJD 60649.080
----
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 M31-004434.65Plot of color for M31-004434.65

Key for Plot Variability Photometry Table Target Notes

Variability

Plot/Graph Photometry Table Target Notes

It is very 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 [0.14 mag]B [0.20 mag]R [0.14 mag]
B [0.20 mag]0.72 (31)
R [0.14 mag]0.73 (30)0.80 (16)
I [0.25 mag]0.29 (19)0.28 (7)0.20 (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 M31-004434.65

Plot to assess correlation between bands for M31-004434.65

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)		0.51 | 1.19
R
(I|R)		0.46 | 0.960.56 | 0.31
I
(I|R)		0.40 | 0.650.26 | 0.490.15 | 0.55

Back to catalog index

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

Generated on 2025-08-04 15:53:14 UT-5