Color composite thumbnail image of UIT008UIT008 (J013245.41+303858.3 )



Target Notes

Color composite thumbnail image of UIT008

Classification: Of/late-WN

(Candidate LBV) Two LGGS stars >2 fainter and fifteen LGGS stars >3 magnitudes fainter within 5 arcseconds. But nothing else within 2 arcseconds.

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 M33 Variability Hartman et al. Survey (2006) at VizieR


Photometry Table

Download table (txt) Key to Flags in Table Key For Images Plot/Graph Variability
MJDV*ImageB*ImageR*ImagesI*Images
56140.39 17.08± 0.04BUIT008 in filter V on MJD  56140.390
---- 17.04± 0.11bUIT008 in filter R on MJD  56140.390
----
56593.16 17.09± 0.04BUIT008 in filter V on MJD  56593.160
17.02± 0.03bUIT008 in filter B on MJD  56593.160
--------
56599.19 16.88± 0.04BUIT008 in filter V on MJD  56599.190
16.91± 0.03bUIT008 in filter B on MJD  56599.190
16.80± 0.06bUIT008 in filter R on MJD  56599.190
----
56976.19 17.42± 0.05BUIT008 in filter V on MJD  56976.190
17.03± 0.05bUIT008 in filter B on MJD  56976.190
16.92± 0.07bUIT008 in filter R on MJD  56976.190
----
57328.16 17.14± 0.04BUIT008 in filter V on MJD  57328.160
17.14± 0.04bUIT008 in filter B on MJD  57328.160
17.02± 0.04bUIT008 in filter R on MJD  57328.160
----
57406.10 16.92± 0.06BUIT008 in filter V on MJD  57406.100
17.10± 0.04bUIT008 in filter B on MJD  57406.100
16.98± 0.05bUIT008 in filter R on MJD  57406.100
17.11± 0.09bUIT008 in filter I on MJD  57406.100
57634.38 17.04± 0.04BUIT008 in filter V on MJD  57634.380
17.07± 0.05bUIT008 in filter B on MJD  57634.380
17.00± 0.07bUIT008 in filter R on MJD  57634.380
17.00± 0.09bUIT008 in filter I on MJD  57634.380
57964.40------------ 17.12± 0.08TbUIT008 in filter I on MJD  57964.400
UIT008 in filter I on MJD  57964.400
58043.13 17.04± 0.04BUIT008 in filter V on MJD  58043.130
17.12± 0.04bUIT008 in filter B on MJD  58043.130
16.94± 0.04bUIT008 in filter R on MJD  58043.130
----
58073.22 17.10± 0.05BUIT008 in filter V on MJD  58073.220
17.31± 0.05bUIT008 in filter B on MJD  58073.220
--------
58108.09 17.11± 0.04BUIT008 in filter V on MJD  58108.090
17.18± 0.04bUIT008 in filter B on MJD  58108.090
---- 17.20± 0.08bUIT008 in filter I on MJD  58108.090
58316.35 17.01± 0.06BUIT008 in filter V on MJD  58316.350
17.21± 0.04bUIT008 in filter B on MJD  58316.350
--------
58341.37 17.12± 0.05BUIT008 in filter V on MJD  58341.370
-------- 17.16± 0.08bUIT008 in filter I on MJD  58341.370
58373.15 17.05± 0.06BUIT008 in filter V on MJD  58373.150
17.19± 0.06bUIT008 in filter B on MJD  58373.150
--------
58433.02 17.04± 0.05BUIT008 in filter V on MJD  58433.020
---- 16.81± 0.05bUIT008 in filter R on MJD  58433.020
16.86± 0.09bUIT008 in filter I on MJD  58433.020
58673.38 17.18± 0.04BUIT008 in filter V on MJD  58673.380
17.22± 0.04bUIT008 in filter B on MJD  58673.380
--------
58695.39 17.24± 0.05BUIT008 in filter V on MJD  58695.390
---- 17.34± 0.07bUIT008 in filter R on MJD  58695.390
----
58750.20 17.15± 0.05ABUIT008 in filter V on MJD  58750.200
UIT008 in filter V on MJD  58750.200
17.24± 0.05bUIT008 in filter B on MJD  58750.200
17.01± 0.06bUIT008 in filter R on MJD  58750.200
17.20± 0.09bUIT008 in filter I on MJD  58750.200
58779.18 16.91± 0.04BUIT008 in filter V on MJD  58779.180
17.01± 0.04bUIT008 in filter B on MJD  58779.180
--------
58784.14 17.15± 0.05BUIT008 in filter V on MJD  58784.140
---- 17.07± 0.05bUIT008 in filter R on MJD  58784.140
----
58812.20 17.11± 0.07BUIT008 in filter V on MJD  58812.200
---- 16.94± 0.07bUIT008 in filter R on MJD  58812.200
----
59059.40 17.18± 0.07BUIT008 in filter V on MJD  59059.400
---- 17.09± 0.06bUIT008 in filter R on MJD  59059.400
17.13± 0.10bUIT008 in filter I on MJD  59059.400
59081.30 17.12± 0.06BUIT008 in filter V on MJD  59081.300
17.07± 0.04bUIT008 in filter B on MJD  59081.300
17.06± 0.05bUIT008 in filter R on MJD  59081.300
----
59082.35 17.09± 0.05ABUIT008 in filter V on MJD  59082.350
UIT008 in filter V on MJD  59082.350
17.14± 0.04AbUIT008 in filter B on MJD  59082.350
UIT008 in filter B on MJD  59082.350
UIT008 in filter B on MJD  59082.350
17.07± 0.06AbUIT008 in filter R on MJD  59082.350
UIT008 in filter R on MJD  59082.350
UIT008 in filter R on MJD  59082.350
----
59084.25-------- 17.00± 0.05TbUIT008 in filter R on MJD  59084.250
----
59161.12 17.11± 0.04ABUIT008 in filter V on MJD  59161.120
UIT008 in filter V on MJD  59161.120
17.03± 0.03bUIT008 in filter B on MJD  59161.120
16.97± 0.06AbUIT008 in filter R on MJD  59161.120
UIT008 in filter R on MJD  59161.120
17.16± 0.09bUIT008 in filter I on MJD  59161.120
59171.13 17.17± 0.06ABUIT008 in filter V on MJD  59171.130
UIT008 in filter V on MJD  59171.130
17.14± 0.04AbUIT008 in filter B on MJD  59171.130
UIT008 in filter B on MJD  59171.130
---- 17.19± 0.08AbUIT008 in filter I on MJD  59171.130
UIT008 in filter I on MJD  59171.130
59227.11 17.11± 0.05ABUIT008 in filter V on MJD  59227.110
UIT008 in filter V on MJD  59227.110
17.23± 0.05AbUIT008 in filter B on MJD  59227.110
UIT008 in filter B on MJD  59227.110
17.17± 0.06bUIT008 in filter R on MJD  59227.110
----
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

Plot of photometry for UIT008Plot of color for UIT008

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 [0.40 mag]B [0.54 mag]R [0.53 mag]
B [0.40 mag]0.06 (19)
R [0.53 mag]0.16 (17)0.61 (11)
I [0.34 mag]0.25 (9)0.36 (6)0.55 (6)

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 UIT008

Plot to assess correlation between bands for UIT008

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)
2.26 | 1.21
R
(I|R)
2.09 | 1.142.08 | 1.05
I
(I|R)
1.03 | 1.380.77 | 2.361.68 | 1.05

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