Color composite thumbnail image of M31-004339.28M31-004339.28 (J004339.27+411019.3)



Target Notes

Color composite thumbnail image of M31-004339.28

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 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
56142.33 18.59± 0.11TAM31-004339.28 in filter V on MJD  56142.330
M31-004339.28 in filter V on MJD  56142.330
------------
56267.15-------- 18.21± 0.06TM31-004339.28 in filter R on MJD  56267.150
M31-004339.28 in filter R on MJD  56267.150
----
56490.38 18.64± 0.05TM31-004339.28 in filter V on MJD  56490.380
------------
56536.26 18.52± 0.06-M31-004339.28 in filter V on MJD  56536.260
---- 18.17± 0.07-M31-004339.28 in filter R on MJD  56536.260
----
56537.18 18.61± 0.06AM31-004339.28 in filter V on MJD  56537.180
M31-004339.28 in filter V on MJD  56537.180
18.76± 0.07AM31-004339.28 in filter B on MJD  56537.180
M31-004339.28 in filter B on MJD  56537.180
18.15± 0.05-M31-004339.28 in filter R on MJD  56537.180
M31-004339.28 in filter R on MJD  56537.180
----
56915.16 18.68± 0.07-M31-004339.28 in filter V on MJD  56915.160
18.66± 0.08-M31-004339.28 in filter B on MJD  56915.160
18.14± 0.06-M31-004339.28 in filter R on MJD  56915.160
----
57227.34 18.59± 0.05-M31-004339.28 in filter V on MJD  57227.340
18.71± 0.06-M31-004339.28 in filter B on MJD  57227.340
18.13± 0.05-M31-004339.28 in filter R on MJD  57227.340
----
57310.10 18.52± 0.07TM31-004339.28 in filter V on MJD  57310.100
--------> 18.45-M31-004339.28 in filter I on MJD  57310.100
57633.35 18.65± 0.07AM31-004339.28 in filter V on MJD  57633.350
M31-004339.28 in filter V on MJD  57633.350
18.68± 0.07AM31-004339.28 in filter B on MJD  57633.350
M31-004339.28 in filter B on MJD  57633.350
18.12± 0.05AM31-004339.28 in filter R on MJD  57633.350
M31-004339.28 in filter R on MJD  57633.350
----
57635.35 18.66± 0.06-M31-004339.28 in filter V on MJD  57635.350
-------- 18.21± 0.08-M31-004339.28 in filter I on MJD  57635.350
57638.25 18.64± 0.05-M31-004339.28 in filter V on MJD  57638.250
-------- 18.24± 0.09-M31-004339.28 in filter I on MJD  57638.250
57887.40>19.140XM31-004339.28 in filter V on MJD  57887.400
------------
57888.40----> 18.13-M31-004339.28 in filter B on MJD  57888.400
> 19.28XM31-004339.28 in filter R on MJD  57888.400
----
57928.32 18.61± 0.08-M31-004339.28 in filter V on MJD  57928.320
18.68± 0.09-M31-004339.28 in filter B on MJD  57928.320
17.98± 0.07-M31-004339.28 in filter R on MJD  57928.320
> 18.44-M31-004339.28 in filter I on MJD  57928.320
57958.26 18.80± 0.09-M31-004339.28 in filter V on MJD  57958.260
19.02± 0.12-M31-004339.28 in filter B on MJD  57958.260
---- 18.56± 0.12-M31-004339.28 in filter I on MJD  57958.260
57963.26 18.50± 0.07-M31-004339.28 in filter V on MJD  57963.260
18.69± 0.08-M31-004339.28 in filter B on MJD  57963.260
--------
57988.22 18.61± 0.08-M31-004339.28 in filter V on MJD  57988.220
18.78± 0.09-M31-004339.28 in filter B on MJD  57988.220
---- 18.21± 0.09-M31-004339.28 in filter I on MJD  57988.220
58035.03 18.55± 0.08-M31-004339.28 in filter V on MJD  58035.030
---- 18.04± 0.05-M31-004339.28 in filter R on MJD  58035.030
----
58043.05 18.66± 0.07-M31-004339.28 in filter V on MJD  58043.050
18.72± 0.07-M31-004339.28 in filter B on MJD  58043.050
18.06± 0.05-M31-004339.28 in filter R on MJD  58043.050
----
58045.05 18.62± 0.06TM31-004339.28 in filter V on MJD  58045.050
--------> 18.43-M31-004339.28 in filter I on MJD  58045.050
58067.10 18.58± 0.06-M31-004339.28 in filter V on MJD  58067.100
-------- 18.20± 0.09-M31-004339.28 in filter I on MJD  58067.100
58073.09 18.65± 0.07-M31-004339.28 in filter V on MJD  58073.090
18.69± 0.08-M31-004339.28 in filter B on MJD  58073.090
--------
58077.08 18.66± 0.09-M31-004339.28 in filter V on MJD  58077.080
-------- 18.06± 0.10-M31-004339.28 in filter I on MJD  58077.080
58098.07 18.46± 0.07-M31-004339.28 in filter V on MJD  58098.070
18.69± 0.08-M31-004339.28 in filter B on MJD  58098.070
--------
58103.08 18.67± 0.06-M31-004339.28 in filter V on MJD  58103.080
-------- 17.70± 0.09-M31-004339.28 in filter I on MJD  58103.080
58312.26 18.79± 0.09-M31-004339.28 in filter V on MJD  58312.260
18.85± 0.10-M31-004339.28 in filter B on MJD  58312.260
18.18± 0.07-M31-004339.28 in filter R on MJD  58312.260
----
58316.24 18.60± 0.08-M31-004339.28 in filter V on MJD  58316.240
-------- 18.39± 0.12-M31-004339.28 in filter I on MJD  58316.240
58339.26 18.61± 0.07-M31-004339.28 in filter V on MJD  58339.260
-------- 18.01± 0.09-M31-004339.28 in filter I on MJD  58339.260
58342.26 18.70± 0.07-M31-004339.28 in filter V on MJD  58342.260
18.67± 0.08-M31-004339.28 in filter B on MJD  58342.260
--------
58366.11 18.61± 0.07-M31-004339.28 in filter V on MJD  58366.110
18.75± 0.08-M31-004339.28 in filter B on MJD  58366.110
--------
58375.09 18.62± 0.06-M31-004339.28 in filter V on MJD  58375.090
---- 18.14± 0.05-M31-004339.28 in filter R on MJD  58375.090
----
58403.06 18.66± 0.06-M31-004339.28 in filter V on MJD  58403.060
-------- 17.81± 0.08-M31-004339.28 in filter I on MJD  58403.060
58420.01 18.56± 0.09-M31-004339.28 in filter V on MJD  58420.010
18.86± 0.10-M31-004339.28 in filter B on MJD  58420.010
--------
58436.04 18.66± 0.06-M31-004339.28 in filter V on MJD  58436.040
18.39± 0.08-M31-004339.28 in filter B on MJD  58436.040
18.04± 0.05-M31-004339.28 in filter R on MJD  58436.040
----
58671.35 18.62± 0.06AM31-004339.28 in filter V on MJD  58671.350
M31-004339.28 in filter V on MJD  58671.350
18.76± 0.05-M31-004339.28 in filter B on MJD  58671.350
18.18± 0.05-M31-004339.28 in filter R on MJD  58671.350
----
58695.41 18.74± 0.05-M31-004339.28 in filter V on MJD  58695.410
---- 18.23± 0.05-M31-004339.28 in filter R on MJD  58695.410
----
58750.11 18.49± 0.04-M31-004339.28 in filter V on MJD  58750.110
-------- 17.79± 0.07-M31-004339.28 in filter I on MJD  58750.110
58779.03 18.60± 0.05-M31-004339.28 in filter V on MJD  58779.030
18.67± 0.05-M31-004339.28 in filter B on MJD  58779.030
--------
58812.16 18.63± 0.04-M31-004339.28 in filter V on MJD  58812.160
---- 18.21± 0.04-M31-004339.28 in filter R on MJD  58812.160
----
59000.37 18.50± 0.07-M31-004339.28 in filter V on MJD  59000.370
---- 18.13± 0.06-M31-004339.28 in filter R on MJD  59000.370
----
59055.29 18.62± 0.07-M31-004339.28 in filter V on MJD  59055.290
18.72± 0.08-M31-004339.28 in filter B on MJD  59055.290
--------
59077.25 18.63± 0.08-M31-004339.28 in filter V on MJD  59077.250
---- 18.16± 0.06-M31-004339.28 in filter R on MJD  59077.250
18.24± 0.08-M31-004339.28 in filter I on MJD  59077.250
59131.11 18.56± 0.06-M31-004339.28 in filter V on MJD  59131.110
18.58± 0.07-M31-004339.28 in filter B on MJD  59131.110
--------
59166.14 18.64± 0.06-M31-004339.28 in filter V on MJD  59166.140
-------- 18.13± 0.07-M31-004339.28 in filter I on MJD  59166.140
59194.12 18.62± 0.04-M31-004339.28 in filter V on MJD  59194.120
---- 18.18± 0.05-M31-004339.28 in filter R on MJD  59194.120
----
59376.38 18.59± 0.09-M31-004339.28 in filter V on MJD  59376.380
18.69± 0.12-M31-004339.28 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 M31-004339.28Plot of color for M31-004339.28

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 [0.64 mag]B [0.33 mag]R [0.24 mag]
B [0.64 mag]0.11 (21)
R [0.24 mag]0.06 (17)0.34 (9)
I [0.86 mag]0.17 (13)-.-- (2) -.-- (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 M31-004339.28

Plot to assess correlation between bands for M31-004339.28

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)
0.25 | 1.21
R
(I|R)
0.30 | 0.811.85 | 0.10
I
(I|R)
1.08 | 0.34--- | --- --- | ----

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