Color composite thumbnail image of M31-004052.19M31-004052.19 (J004052.18+403116.5)



Target Notes

Color composite thumbnail image of M31-004052.19

Classification: YSG

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
56951.10 17.66± 0.04-M31-004052.19 in filter V on MJD  56951.100
17.96± 0.04-M31-004052.19 in filter B on MJD  56951.100
17.37± 0.05-M31-004052.19 in filter R on MJD  56951.100
----
57307.15 17.72± 0.03-M31-004052.19 in filter V on MJD  57307.150
18.03± 0.03-M31-004052.19 in filter B on MJD  57307.150
17.52± 0.04-M31-004052.19 in filter R on MJD  57307.150
----
57634.30---- 17.98± 0.04TM31-004052.19 in filter B on MJD  57634.300
17.45± 0.06TM31-004052.19 in filter R on MJD  57634.300
----
57638.23 17.71± 0.05-M31-004052.19 in filter V on MJD  57638.230
17.93± 0.06-M31-004052.19 in filter B on MJD  57638.230
17.42± 0.07-M31-004052.19 in filter R on MJD  57638.230
17.19± 0.07-M31-004052.19 in filter I on MJD  57638.230
57958.38 17.82± 0.04-M31-004052.19 in filter V on MJD  57958.380
---- 17.60± 0.04-M31-004052.19 in filter R on MJD  57958.380
17.38± 0.05-M31-004052.19 in filter I on MJD  57958.380
57963.30 17.74± 0.03-M31-004052.19 in filter V on MJD  57963.300
18.02± 0.04-M31-004052.19 in filter B on MJD  57963.300
--------
58045.10 17.74± 0.04-M31-004052.19 in filter V on MJD  58045.100
18.02± 0.04-M31-004052.19 in filter B on MJD  58045.100
17.51± 0.04-M31-004052.19 in filter R on MJD  58045.100
----
58067.14 17.72± 0.04-M31-004052.19 in filter V on MJD  58067.140
-------- 17.20± 0.05-M31-004052.19 in filter I on MJD  58067.140
58103.11 17.74± 0.05-M31-004052.19 in filter V on MJD  58103.110
17.93± 0.06-M31-004052.19 in filter B on MJD  58103.110
---- 17.26± 0.06-M31-004052.19 in filter I on MJD  58103.110
58316.30 17.71± 0.05-M31-004052.19 in filter V on MJD  58316.300
18.07± 0.07-M31-004052.19 in filter B on MJD  58316.300
17.44± 0.05-M31-004052.19 in filter R on MJD  58316.300
----
58317.24 17.66± 0.04-M31-004052.19 in filter V on MJD  58317.240
-------- 17.00± 0.05-M31-004052.19 in filter I on MJD  58317.240
58342.23 17.73± 0.04-M31-004052.19 in filter V on MJD  58342.230
18.08± 0.05-M31-004052.19 in filter B on MJD  58342.230
---- 17.28± 0.05-M31-004052.19 in filter I on MJD  58342.230
58372.13 17.76± 0.03-M31-004052.19 in filter V on MJD  58372.130
-------- 17.33± 0.05-M31-004052.19 in filter I on MJD  58372.130
58433.06 17.76± 0.03-M31-004052.19 in filter V on MJD  58433.060
18.05± 0.04-M31-004052.19 in filter B on MJD  58433.060
17.50± 0.03-M31-004052.19 in filter R on MJD  58433.060
----
58672.29 17.72± 0.04-M31-004052.19 in filter V on MJD  58672.290
18.09± 0.06-M31-004052.19 in filter B on MJD  58672.290
--------
58695.24 17.77± 0.03-M31-004052.19 in filter V on MJD  58695.240
---- 17.53± 0.03-M31-004052.19 in filter R on MJD  58695.240
17.30± 0.04-M31-004052.19 in filter I on MJD  58695.240
58757.06 17.76± 0.04-M31-004052.19 in filter V on MJD  58757.060
---- 17.50± 0.03-M31-004052.19 in filter R on MJD  58757.060
----
58784.02 17.73± 0.05-M31-004052.19 in filter V on MJD  58784.020
18.04± 0.04-M31-004052.19 in filter B on MJD  58784.020
--------
58836.09 17.75± 0.03AM31-004052.19 in filter V on MJD  58836.090
M31-004052.19 in filter V on MJD  58836.090
---- 17.44± 0.03-M31-004052.19 in filter R on MJD  58836.090
17.21± 0.05-M31-004052.19 in filter I on MJD  58836.090
59001.40 17.80± 0.11TM31-004052.19 in filter V on MJD  59001.400
------------
59026.34 17.71± 0.04AM31-004052.19 in filter V on MJD  59026.340
M31-004052.19 in filter V on MJD  59026.340
---- 17.45± 0.05-M31-004052.19 in filter R on MJD  59026.340
----
59059.29 17.74± 0.04-M31-004052.19 in filter V on MJD  59059.290
18.07± 0.04-M31-004052.19 in filter B on MJD  59059.290
---- 17.30± 0.06-M31-004052.19 in filter I on MJD  59059.290
59082.29 17.85± 0.04-M31-004052.19 in filter V on MJD  59082.290
18.16± 0.04-M31-004052.19 in filter B on MJD  59082.290
17.62± 0.05-M31-004052.19 in filter R on MJD  59082.290
----
59131.15 17.69± 0.04-M31-004052.19 in filter V on MJD  59131.150
---- 17.48± 0.05-M31-004052.19 in filter R on MJD  59131.150
----
59166.21 17.79± 0.04-M31-004052.19 in filter V on MJD  59166.210
-------- 17.22± 0.07-M31-004052.19 in filter I on MJD  59166.210
59194.16 17.73± 0.03-M31-004052.19 in filter V on MJD  59194.160
18.04± 0.04-M31-004052.19 in filter B on MJD  59194.160
--------
59380.34 17.80± 0.05-M31-004052.19 in filter V on MJD  59380.340
18.09± 0.05-M31-004052.19 in filter B on MJD  59380.340
--------
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 M31-004052.19Plot of color for M31-004052.19

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 [0.23 mag]B [0.19 mag]R [0.25 mag]
B [0.23 mag]0.43 (15)
R [0.25 mag]0.79 (13)0.70 (8)
I [0.37 mag]0.64 (11)0.58 (4)1.00 (4)

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 M31-004052.19

Plot to assess correlation between bands for M31-004052.19

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)
1.10 | 1.39
R
(I|R)
1.79 | 0.871.00 | 0.10
I
(I|R)
1.65 | 0.56--- | --- --- | ----

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