Open a color composite thumbnail image of M31-004334.50M31-004334.50 (J004334.50+410951.7)


Target Notes

Open a color composite thumbnail image of M31-004334.50

Classification: Of/late-WN

One LGGS star one mag fainter 4 arc-seconds to NE. Sixteen more LGGS stars >2 magnitudes fainter within 5 arc-seconds. On the edge of an unresolved blob but nothing bright and close enough to overwhelm PSF fitting.

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>15.870-Open a thumbnail image of M31-004334.50 in filter V on MJD 56142.330
Open a thumbnail image of M31-004334.50 in filter V on MJD 56142.330
------------
56267.15-------- 16.98± 0.06TbOpen a thumnail image of M31-004334.50 in filter R on MJD 56267.150
Open a thumnail image of M31-004334.50 in filter R on MJD 56267.150
----
56490.38 17.75± 0.05TbOpen a thumbnail image of M31-004334.50 in filter V on MJD 56490.380
------------
56536.26 17.68± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 56536.260
---- 16.80± 0.07bOpen a thumnail image of M31-004334.50 in filter R on MJD 56536.260
----
56537.18 17.69± 0.05AbOpen a thumbnail image of M31-004334.50 in filter V on MJD 56537.180
Open a thumbnail image of M31-004334.50 in filter V on MJD 56537.180
 17.71± 0.06AbOpen a thumnail image of M31-004334.50 in filter B on MJD 56537.180
Open a thumnail image of M31-004334.50 in filter B on MJD 56537.180
 16.80± 0.04bOpen a thumnail image of M31-004334.50 in filter R on MJD 56537.180
Open a thumnail image of M31-004334.50 in filter R on MJD 56537.180
----
56915.16 17.68± 0.04bOpen a thumbnail image of M31-004334.50 in filter V on MJD 56915.160
 17.78± 0.06bOpen a thumnail image of M31-004334.50 in filter B on MJD 56915.160
 16.64± 0.05bOpen a thumnail image of M31-004334.50 in filter R on MJD 56915.160
----
57227.34 17.74± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 57227.340
 17.83± 0.05bOpen a thumnail image of M31-004334.50 in filter B on MJD 57227.340
 16.90± 0.06bOpen a thumnail image of M31-004334.50 in filter R on MJD 57227.340
----
57310.10 17.35± 0.04XOpen a thumbnail image of M31-004334.50 in filter V on MJD 57310.100
--------> 15.52bOpen a thumnail image of M31-004334.50 in filter I on MJD 57310.100
57633.35 17.68± 0.06AbOpen a thumbnail image of M31-004334.50 in filter V on MJD 57633.350
Open a thumbnail image of M31-004334.50 in filter V on MJD 57633.350
 17.80± 0.06AbOpen a thumnail image of M31-004334.50 in filter B on MJD 57633.350
Open a thumnail image of M31-004334.50 in filter B on MJD 57633.350
 16.96± 0.06AbOpen a thumnail image of M31-004334.50 in filter R on MJD 57633.350
Open a thumnail image of M31-004334.50 in filter R on MJD 57633.350
----
57635.35 17.77± 0.06bOpen a thumbnail image of M31-004334.50 in filter V on MJD 57635.350
-------- 17.26± 0.07bOpen a thumnail image of M31-004334.50 in filter I on MJD 57635.350
57638.25 17.80± 0.04bOpen a thumbnail image of M31-004334.50 in filter V on MJD 57638.250
-------- 17.29± 0.08bOpen a thumnail image of M31-004334.50 in filter I on MJD 57638.250
57888.07>14.390-Open a thumbnail image of M31-004334.50 in filter V on MJD 57888.070
 17.51± 0.16XOpen a thumnail image of M31-004334.50 in filter B on MJD 57888.070
> 14.41XOpen a thumnail image of M31-004334.50 in filter R on MJD 57888.070
----
57928.32 17.38± 0.05XOpen a thumbnail image of M31-004334.50 in filter V on MJD 57928.320
 17.53± 0.07XOpen a thumnail image of M31-004334.50 in filter B on MJD 57928.320
 16.39± 0.06XOpen a thumnail image of M31-004334.50 in filter R on MJD 57928.320
> 15.48XOpen a thumnail image of M31-004334.50 in filter I on MJD 57928.320
57958.26 17.70± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 57958.260
 17.73± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 57958.260
---- 17.09± 0.07bOpen a thumnail image of M31-004334.50 in filter I on MJD 57958.260
57963.26 17.72± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 57963.260
 17.79± 0.07bOpen a thumnail image of M31-004334.50 in filter B on MJD 57963.260
--------
57988.22 17.65± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 57988.220
 17.81± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 57988.220
---- 17.12± 0.07bOpen a thumnail image of M31-004334.50 in filter I on MJD 57988.220
58035.03 17.65± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58035.030
---- 16.48± 0.05bOpen a thumnail image of M31-004334.50 in filter R on MJD 58035.030
----
58043.05 17.74± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58043.050
 17.71± 0.06bOpen a thumnail image of M31-004334.50 in filter B on MJD 58043.050
 16.67± 0.05bOpen a thumnail image of M31-004334.50 in filter R on MJD 58043.050
----
58045.05 17.71± 0.05TbOpen a thumbnail image of M31-004334.50 in filter V on MJD 58045.050
--------> 15.54XOpen a thumnail image of M31-004334.50 in filter I on MJD 58045.050
58067.10 17.62± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58067.100
-------- 17.15± 0.07bOpen a thumnail image of M31-004334.50 in filter I on MJD 58067.100
58073.09 17.79± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58073.090
 18.00± 0.09bOpen a thumnail image of M31-004334.50 in filter B on MJD 58073.090
--------
58077.08 17.80± 0.08bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58077.080
-------- 17.10± 0.08bOpen a thumnail image of M31-004334.50 in filter I on MJD 58077.080
58098.07 17.75± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58098.070
 17.86± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 58098.070
--------
58103.08 17.81± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58103.080
-------- 17.05± 0.08bOpen a thumnail image of M31-004334.50 in filter I on MJD 58103.080
58312.26 17.83± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58312.260
 17.80± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 58312.260
 16.83± 0.07bOpen a thumnail image of M31-004334.50 in filter R on MJD 58312.260
----
58316.24 17.75± 0.07TbOpen a thumbnail image of M31-004334.50 in filter V on MJD 58316.240
--------> 15.30-Open a thumnail image of M31-004334.50 in filter I on MJD 58316.240
58339.26 17.69± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58339.260
-------- 17.20± 0.08bOpen a thumnail image of M31-004334.50 in filter I on MJD 58339.260
58342.26 17.72± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58342.260
 17.70± 0.07bOpen a thumnail image of M31-004334.50 in filter B on MJD 58342.260
--------
58366.11 17.72± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58366.110
 17.66± 0.07bOpen a thumnail image of M31-004334.50 in filter B on MJD 58366.110
--------
58375.09 17.63± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58375.090
---- 16.80± 0.06bOpen a thumnail image of M31-004334.50 in filter R on MJD 58375.090
----
58403.06 17.64± 0.04TbOpen a thumbnail image of M31-004334.50 in filter V on MJD 58403.060
--------> 15.69-Open a thumnail image of M31-004334.50 in filter I on MJD 58403.060
58420.01 17.51± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58420.010
 17.55± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 58420.010
--------
58436.04 17.58± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58436.040
 17.35± 0.06bOpen a thumnail image of M31-004334.50 in filter B on MJD 58436.040
 16.36± 0.05bOpen a thumnail image of M31-004334.50 in filter R on MJD 58436.040
----
58671.35 17.76± 0.04AbOpen a thumbnail image of M31-004334.50 in filter V on MJD 58671.350
Open a thumbnail image of M31-004334.50 in filter V on MJD 58671.350
 17.90± 0.04bOpen a thumnail image of M31-004334.50 in filter B on MJD 58671.350
 16.95± 0.06bOpen a thumnail image of M31-004334.50 in filter R on MJD 58671.350
----
58695.41 17.71± 0.04bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58695.410
---- 16.84± 0.06bOpen a thumnail image of M31-004334.50 in filter R on MJD 58695.410
----
58750.11 17.85± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58750.110
-------- 17.13± 0.07bOpen a thumnail image of M31-004334.50 in filter I on MJD 58750.110
58779.03 17.63± 0.04bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58779.030
 17.64± 0.04bOpen a thumnail image of M31-004334.50 in filter B on MJD 58779.030
--------
58812.16 17.74± 0.04bOpen a thumbnail image of M31-004334.50 in filter V on MJD 58812.160
---- 16.77± 0.05bOpen a thumnail image of M31-004334.50 in filter R on MJD 58812.160
----
59000.37 17.63± 0.06bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59000.370
---- 16.85± 0.06bOpen a thumnail image of M31-004334.50 in filter R on MJD 59000.370
----
59055.29 17.76± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59055.290
 17.95± 0.07bOpen a thumnail image of M31-004334.50 in filter B on MJD 59055.290
--------
59077.25 17.67± 0.08bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59077.250
---- 16.77± 0.07bOpen a thumnail image of M31-004334.50 in filter R on MJD 59077.250
 17.27± 0.07bOpen a thumnail image of M31-004334.50 in filter I on MJD 59077.250
59131.11 17.77± 0.06bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59131.110
 17.75± 0.06bOpen a thumnail image of M31-004334.50 in filter B on MJD 59131.110
--------
59166.14 17.62± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59166.140
-------- 17.23± 0.07bOpen a thumnail image of M31-004334.50 in filter I on MJD 59166.140
59194.12 17.80± 0.04bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59194.120
---- 16.99± 0.07bOpen a thumnail image of M31-004334.50 in filter R on MJD 59194.120
----
59376.38 17.68± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59376.380
 17.76± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 59376.380
--------
59409.33 17.55± 0.09AbOpen a thumbnail image of M31-004334.50 in filter V on MJD 59409.330
Open a thumbnail image of M31-004334.50 in filter V on MJD 59409.330
---- 16.83± 0.07bOpen a thumnail image of M31-004334.50 in filter R on MJD 59409.330
----
59442.36 17.72± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59442.360
 17.84± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 59442.360
---- 17.17± 0.07bOpen a thumnail image of M31-004334.50 in filter I on MJD 59442.360
59467.13 17.59± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59467.130
---- 16.72± 0.06bOpen a thumnail image of M31-004334.50 in filter R on MJD 59467.130
----
59522.10 17.82± 0.05bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59522.100
 17.66± 0.06bOpen a thumnail image of M31-004334.50 in filter B on MJD 59522.100
--------
59546.13 17.89± 0.04bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59546.130
-------- 17.26± 0.08bOpen a thumnail image of M31-004334.50 in filter I on MJD 59546.130
59583.12 17.81± 0.06bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59583.120
---- 16.96± 0.07bOpen a thumnail image of M31-004334.50 in filter R on MJD 59583.120
----
59739.38 17.73± 0.06bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59739.380
 17.77± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 59739.380
 16.90± 0.08bOpen a thumnail image of M31-004334.50 in filter R on MJD 59739.380
----
59816.16 17.71± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59816.160
---- 16.91± 0.07bOpen a thumnail image of M31-004334.50 in filter R on MJD 59816.160
----
59848.09 17.26± 0.05TXOpen a thumbnail image of M31-004334.50 in filter V on MJD 59848.090
--------> 15.19-Open a thumnail image of M31-004334.50 in filter I on MJD 59848.090
59879.05 17.59± 0.06bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59879.050
 17.70± 0.07bOpen a thumnail image of M31-004334.50 in filter B on MJD 59879.050
--------
59905.10 17.74± 0.04bOpen a thumbnail image of M31-004334.50 in filter V on MJD 59905.100
---- 16.90± 0.06bOpen a thumnail image of M31-004334.50 in filter R on MJD 59905.100
 17.15± 0.05bOpen a thumnail image of M31-004334.50 in filter I on MJD 59905.100
60147.27 17.70± 0.08bOpen a thumbnail image of M31-004334.50 in filter V on MJD 60147.270
---- 16.85± 0.08bOpen a thumnail image of M31-004334.50 in filter R on MJD 60147.270
----
60172.21 17.74± 0.08bOpen a thumbnail image of M31-004334.50 in filter V on MJD 60172.210
-------- 17.03± 0.12bOpen a thumnail image of M31-004334.50 in filter I on MJD 60172.210
60201.09 17.57± 0.09bOpen a thumbnail image of M31-004334.50 in filter V on MJD 60201.090
---- 16.80± 0.08bOpen a thumnail image of M31-004334.50 in filter R on MJD 60201.090
----
60251.03 17.56± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 60251.030
 17.61± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 60251.030
--------
60290.06 17.73± 0.08bOpen a thumbnail image of M31-004334.50 in filter V on MJD 60290.060
-------- 17.13± 0.10bOpen a thumnail image of M31-004334.50 in filter I on MJD 60290.060
60469.38 17.52± 0.09bOpen a thumbnail image of M31-004334.50 in filter V on MJD 60469.380
---- 16.47± 0.09bOpen a thumnail image of M31-004334.50 in filter R on MJD 60469.380
----
60504.34 17.65± 0.08bOpen a thumbnail image of M31-004334.50 in filter V on MJD 60504.340
 17.66± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 60504.340
--------
60533.25 17.59± 0.08TbOpen a thumbnail image of M31-004334.50 in filter V on MJD 60533.250
------------
60555.16 17.54± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 60555.160
---- 16.75± 0.08bOpen a thumnail image of M31-004334.50 in filter R on MJD 60555.160
 17.13± 0.10bOpen a thumnail image of M31-004334.50 in filter I on MJD 60555.160
60564.15 17.62± 0.08bOpen a thumbnail image of M31-004334.50 in filter V on MJD 60564.150
 17.65± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 60564.150
--------
60594.07 17.62± 0.08bOpen a thumbnail image of M31-004334.50 in filter V on MJD 60594.070
 17.59± 0.08bOpen a thumnail image of M31-004334.50 in filter B on MJD 60594.070
 16.65± 0.08bOpen a thumnail image of M31-004334.50 in filter R on MJD 60594.070
----
60651.11 17.58± 0.07bOpen a thumbnail image of M31-004334.50 in filter V on MJD 60651.110
-------- 17.03± 0.10bOpen a thumnail image of M31-004334.50 in filter I on MJD 60651.110
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

Open a plot of photometry for M31-004334.50Open a plot of color for M31-004334.50

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 [0.38 mag]B [0.65 mag]R [0.63 mag]
B [0.65 mag]0.43 (28)
R [0.63 mag]0.33 (27)0.78 (10)
I [0.27 mag]0.04 (18)0.85 (3)0.09 (3)

Magnitude-Magnitude Plots

The plots below are provided to check the values in the table above and also to show any non-linear correlations

Opens a plot to assess correlation between bands for M31-004334.50

Opens a plot to assess correlation between bands for M31-004334.50

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)		1.69 | 1.39
R
(I|R)		2.04 | 0.5712.89 | 0.10
I
(I|R)		0.33 | 1.51--- | --- --- | ----

Back to catalog index

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

Generated on 2026-01-19 14:34:50 UT-5