Color composite thumbnail image of PSO-J11.2574+42.0498PSO-J11.2574+42.0498 (J004501.83+420259.0)



Target Notes

Color composite thumbnail image of PSO-J11.2574+42.0498

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
56537.24 18.66± 0.05-PSO-J11.2574+42.0498 in filter V on MJD  56537.240
---- 18.22± 0.07-PSO-J11.2574+42.0498 in filter R on MJD  56537.240
----
56593.10 18.71± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  56593.100
---- 18.20± 0.06-PSO-J11.2574+42.0498 in filter R on MJD  56593.100
----
56951.07 18.51± 0.07-PSO-J11.2574+42.0498 in filter V on MJD  56951.070
18.87± 0.06-PSO-J11.2574+42.0498 in filter B on MJD  56951.070
17.85± 0.07-PSO-J11.2574+42.0498 in filter R on MJD  56951.070
----
56982.20 18.45± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  56982.200
18.81± 0.06-PSO-J11.2574+42.0498 in filter B on MJD  56982.200
--------
57036.13 18.57± 0.09-PSO-J11.2574+42.0498 in filter V on MJD  57036.130
18.80± 0.09-PSO-J11.2574+42.0498 in filter B on MJD  57036.130
--------
57309.14 18.34± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  57309.140
18.85± 0.05-PSO-J11.2574+42.0498 in filter B on MJD  57309.140
17.67± 0.06-PSO-J11.2574+42.0498 in filter R on MJD  57309.140
----
57958.32 18.25± 0.07-PSO-J11.2574+42.0498 in filter V on MJD  57958.320
18.68± 0.11-PSO-J11.2574+42.0498 in filter B on MJD  57958.320
---- 16.51± 0.07-PSO-J11.2574+42.0498 in filter I on MJD  57958.320
57963.28 18.21± 0.07-PSO-J11.2574+42.0498 in filter V on MJD  57963.280
18.78± 0.07-PSO-J11.2574+42.0498 in filter B on MJD  57963.280
17.50± 0.06-PSO-J11.2574+42.0498 in filter R on MJD  57963.280
----
58045.07 18.23± 0.05-PSO-J11.2574+42.0498 in filter V on MJD  58045.070
18.64± 0.10-PSO-J11.2574+42.0498 in filter B on MJD  58045.070
17.50± 0.06-PSO-J11.2574+42.0498 in filter R on MJD  58045.070
----
58067.12 18.16± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  58067.120
-------- 16.51± 0.07-PSO-J11.2574+42.0498 in filter I on MJD  58067.120
58098.12 18.23± 0.07-PSO-J11.2574+42.0498 in filter V on MJD  58098.120
18.75± 0.06-PSO-J11.2574+42.0498 in filter B on MJD  58098.120
--------
58312.32 18.27± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  58312.320
18.79± 0.05-PSO-J11.2574+42.0498 in filter B on MJD  58312.320
17.53± 0.06-PSO-J11.2574+42.0498 in filter R on MJD  58312.320
----
58316.28 18.25± 0.05-PSO-J11.2574+42.0498 in filter V on MJD  58316.280
-------- 16.57± 0.06-PSO-J11.2574+42.0498 in filter I on MJD  58316.280
58341.25 18.27± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  58341.250
18.76± 0.08-PSO-J11.2574+42.0498 in filter B on MJD  58341.250
--------
58366.14 18.23± 0.05-PSO-J11.2574+42.0498 in filter V on MJD  58366.140
18.89± 0.06-PSO-J11.2574+42.0498 in filter B on MJD  58366.140
--------
58372.12 18.16± 0.05-PSO-J11.2574+42.0498 in filter V on MJD  58372.120
-------- 16.58± 0.06-PSO-J11.2574+42.0498 in filter I on MJD  58372.120
58403.12 18.29± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  58403.120
---- 17.54± 0.06-PSO-J11.2574+42.0498 in filter R on MJD  58403.120
----
58420.03 18.31± 0.05-PSO-J11.2574+42.0498 in filter V on MJD  58420.030
18.76± 0.06-PSO-J11.2574+42.0498 in filter B on MJD  58420.030
--------
58436.02 18.22± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  58436.020
18.79± 0.07-PSO-J11.2574+42.0498 in filter B on MJD  58436.020
17.57± 0.06-PSO-J11.2574+42.0498 in filter R on MJD  58436.020
----
58672.32 18.45± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  58672.320
---- 17.76± 0.06-PSO-J11.2574+42.0498 in filter R on MJD  58672.320
16.75± 0.07-PSO-J11.2574+42.0498 in filter I on MJD  58672.320
58695.29 18.44± 0.05-PSO-J11.2574+42.0498 in filter V on MJD  58695.290
18.80± 0.06-PSO-J11.2574+42.0498 in filter B on MJD  58695.290
--------
58696.28 18.39± 0.04-PSO-J11.2574+42.0498 in filter V on MJD  58696.280
---- 17.77± 0.05-PSO-J11.2574+42.0498 in filter R on MJD  58696.280
16.71± 0.06-PSO-J11.2574+42.0498 in filter I on MJD  58696.280
58757.08 18.45± 0.05-PSO-J11.2574+42.0498 in filter V on MJD  58757.080
---- 17.77± 0.05-PSO-J11.2574+42.0498 in filter R on MJD  58757.080
----
58784.04 18.47± 0.04-PSO-J11.2574+42.0498 in filter V on MJD  58784.040
18.80± 0.05-PSO-J11.2574+42.0498 in filter B on MJD  58784.040
--------
58812.10 18.38± 0.04-PSO-J11.2574+42.0498 in filter V on MJD  58812.100
---- 17.73± 0.05-PSO-J11.2574+42.0498 in filter R on MJD  58812.100
----
59001.37 18.44± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  59001.370
---- 17.80± 0.05-PSO-J11.2574+42.0498 in filter R on MJD  59001.370
----
59055.33 18.52± 0.04-PSO-J11.2574+42.0498 in filter V on MJD  59055.330
18.84± 0.05-PSO-J11.2574+42.0498 in filter B on MJD  59055.330
---- 16.86± 0.06-PSO-J11.2574+42.0498 in filter I on MJD  59055.330
59077.22 18.51± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  59077.220
---- 17.93± 0.05-PSO-J11.2574+42.0498 in filter R on MJD  59077.220
----
59131.05 18.46± 0.05-PSO-J11.2574+42.0498 in filter V on MJD  59131.050
18.73± 0.07-PSO-J11.2574+42.0498 in filter B on MJD  59131.050
--------
59166.07 18.39± 0.05-PSO-J11.2574+42.0498 in filter V on MJD  59166.070
-------- 16.72± 0.06-PSO-J11.2574+42.0498 in filter I on MJD  59166.070
59194.07 18.49± 0.04-PSO-J11.2574+42.0498 in filter V on MJD  59194.070
---- 17.84± 0.04-PSO-J11.2574+42.0498 in filter R on MJD  59194.070
----
59376.36 18.49± 0.06-PSO-J11.2574+42.0498 in filter V on MJD  59376.360
18.87± 0.07-PSO-J11.2574+42.0498 in filter B on MJD  59376.360
--------
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 PSO-J11.2574+42.0498Plot of color for PSO-J11.2574+42.0498

Key for Plot Variability Photometry Table Target Notes


Variability

Plot/Graph Photometry Table Target Notes

It is 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 [0.25 mag]B [0.56 mag]R [0.72 mag]
B [0.25 mag]0.18 (18)
R [0.72 mag]0.95 (16)0.55 (6)
I [0.35 mag]0.89 (8)-.-- (2) -.-- (2)

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 PSO-J11.2574+42.0498

Plot to assess correlation between bands for PSO-J11.2574+42.0498

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)
0.64 | 0.34
R
(I|R)
9.18 | 0.795.05 | 0.04
I
(I|R)
4.66 | 1.29--- | --- --- | ----

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