Color composite thumbnail image of AE AndAE And (J004302.52+414912.4)



Target Notes

Color composite thumbnail image of AE_And

Classification: LBV

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
56142.31 16.62± 0.04TAE_And in filter V on MJD  56142.310
------------
56267.16-------- 16.48± 0.04TAE_And in filter R on MJD  56267.160
AE_And in filter R on MJD  56267.160
----
56490.35 16.78± 0.05-AE_And in filter V on MJD  56490.350
17.02± 0.05-AE_And in filter B on MJD  56490.350
--------
56536.22 16.93± 0.09-AE_And in filter V on MJD  56536.220
---- 16.84± 0.04-AE_And in filter R on MJD  56536.220
----
56923.11 17.14± 0.04-AE_And in filter V on MJD  56923.110
17.27± 0.04-AE_And in filter B on MJD  56923.110
17.02± 0.04-AE_And in filter R on MJD  56923.110
----
57227.36 17.39± 0.04-AE_And in filter V on MJD  57227.360
17.53± 0.04-AE_And in filter B on MJD  57227.360
--------
57314.12 17.44± 0.04-AE_And in filter V on MJD  57314.120
-------- 17.26± 0.05-AE_And in filter I on MJD  57314.120
57633.25 17.26± 0.04-AE_And in filter V on MJD  57633.250
17.34± 0.04-AE_And in filter B on MJD  57633.250
17.08± 0.03-AE_And in filter R on MJD  57633.250
----
57635.36 17.22± 0.04-AE_And in filter V on MJD  57635.360
-------- 16.99± 0.04-AE_And in filter I on MJD  57635.360
57958.35 17.40± 0.05-AE_And in filter V on MJD  57958.350
---- 17.18± 0.04-AE_And in filter R on MJD  57958.350
17.12± 0.04-AE_And in filter I on MJD  57958.350
57963.38 17.38± 0.04-AE_And in filter V on MJD  57963.380
17.49± 0.04-AE_And in filter B on MJD  57963.380
--------
58067.17 17.43± 0.04-AE_And in filter V on MJD  58067.170
-------- 17.27± 0.05-AE_And in filter I on MJD  58067.170
58312.35 17.34± 0.04-AE_And in filter V on MJD  58312.350
17.43± 0.04-AE_And in filter B on MJD  58312.350
--------
58341.28 17.37± 0.04-AE_And in filter V on MJD  58341.280
---- 17.12± 0.04-AE_And in filter R on MJD  58341.280
17.08± 0.04-AE_And in filter I on MJD  58341.280
58366.16 17.29± 0.05-AE_And in filter V on MJD  58366.160
17.37± 0.04-AE_And in filter B on MJD  58366.160
--------
58433.11 17.27± 0.05-AE_And in filter V on MJD  58433.110
17.35± 0.06-AE_And in filter B on MJD  58433.110
--------
58671.33 17.45± 0.05-AE_And in filter V on MJD  58671.330
17.60± 0.05-AE_And in filter B on MJD  58671.330
--------
58696.25 17.39± 0.05-AE_And in filter V on MJD  58696.250
17.43± 0.05-AE_And in filter B on MJD  58696.250
17.16± 0.04-AE_And in filter R on MJD  58696.250
17.13± 0.04-AE_And in filter I on MJD  58696.250
58757.10 17.26± 0.04-AE_And in filter V on MJD  58757.100
---- 17.06± 0.04-AE_And in filter R on MJD  58757.100
----
58784.07 17.32± 0.04-AE_And in filter V on MJD  58784.070
17.43± 0.04-AE_And in filter B on MJD  58784.070
--------
58812.12 17.20± 0.04-AE_And in filter V on MJD  58812.120
-------- 16.99± 0.03-AE_And in filter I on MJD  58812.120
59019.33 17.32± 0.05-AE_And in filter V on MJD  59019.330
17.47± 0.04-AE_And in filter B on MJD  59019.330
--------
59055.30 17.22± 0.04-AE_And in filter V on MJD  59055.300
---- 17.06± 0.03-AE_And in filter R on MJD  59055.300
16.98± 0.05-AE_And in filter I on MJD  59055.300
59082.20 17.23± 0.03-AE_And in filter V on MJD  59082.200
17.36± 0.03-AE_And in filter B on MJD  59082.200
17.08± 0.03-AE_And in filter R on MJD  59082.200
----
59131.07 17.28± 0.03-AE_And in filter V on MJD  59131.070
---- 17.10± 0.03-AE_And in filter R on MJD  59131.070
----
59166.09 17.29± 0.03-AE_And in filter V on MJD  59166.090
-------- 17.04± 0.04-AE_And in filter I on MJD  59166.090
59194.09 17.25± 0.03-AE_And in filter V on MJD  59194.090
17.34± 0.03-AE_And in filter B on MJD  59194.090
--------
59379.35 17.24± 0.04-AE_And in filter V on MJD  59379.350
---- 17.08± 0.04-AE_And in filter R on MJD  59379.350
----
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 AE_AndPlot of color for AE_And

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 [0.58 mag]B [0.83 mag]R [0.70 mag]
B [0.58 mag]0.94 (14)
R [0.70 mag]0.95 (11)0.98 (4)
I [0.30 mag]0.83 (9)-.-- (1) 0.92 (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 AE_And

Plot to assess correlation between bands for AE_And

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)
9.00 | 0.98
R
(I|R)
4.42 | 1.07--- | ---
I
(I|R)
5.55 | 1.07--- | --- --- | ----

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

Generated on 2021-11-06 16:53:54 UT-5