Color composite thumbnail image of V-078046V-078046 (J013344.65+303559.2)



Target Notes

Color composite thumbnail image of V-078046

Classification: OB-Supergiant

Twenty three LGGS stars >2.5 mag fainter within 5 arcseconds. It is a complicated blend to model under all but the best conditions. Measures are marked 'b' or 'X' depending on how many of the interfering blends are properly modeled.

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 17.00± 0.04bV-078046 in filter V on MJD  56140.390
---- 16.77± 0.10bV-078046 in filter R on MJD  56140.390
----
56593.16 17.10± 0.04bV-078046 in filter V on MJD  56593.160
17.04± 0.03bV-078046 in filter B on MJD  56593.160
--------
56599.18 17.03± 0.05AbV-078046 in filter V on MJD  56599.180
V-078046 in filter V on MJD  56599.180
16.98± 0.06AbV-078046 in filter B on MJD  56599.180
V-078046 in filter B on MJD  56599.180
17.00± 0.06AbV-078046 in filter R on MJD  56599.180
V-078046 in filter R on MJD  56599.180
----
56976.19 17.27± 0.04bV-078046 in filter V on MJD  56976.190
17.15± 0.05bV-078046 in filter B on MJD  56976.190
17.02± 0.07bV-078046 in filter R on MJD  56976.190
----
57035.14 17.08± 0.04bV-078046 in filter V on MJD  57035.140
17.06± 0.04bV-078046 in filter B on MJD  57035.140
17.14± 0.05XV-078046 in filter R on MJD  57035.140
----
57310.16 17.02± 0.05bV-078046 in filter V on MJD  57310.160
17.10± 0.05XV-078046 in filter B on MJD  57310.160
16.89± 0.05bV-078046 in filter R on MJD  57310.160
----
57328.16 17.13± 0.04bV-078046 in filter V on MJD  57328.160
17.11± 0.04bV-078046 in filter B on MJD  57328.160
17.00± 0.04bV-078046 in filter R on MJD  57328.160
----
57406.10 17.01± 0.05bV-078046 in filter V on MJD  57406.100
16.92± 0.04bV-078046 in filter B on MJD  57406.100
17.04± 0.06bV-078046 in filter R on MJD  57406.100
17.03± 0.09bV-078046 in filter I on MJD  57406.100
57634.39 17.04± 0.06AbV-078046 in filter V on MJD  57634.390
V-078046 in filter V on MJD  57634.390
16.98± 0.07AbV-078046 in filter B on MJD  57634.390
V-078046 in filter B on MJD  57634.390
16.88± 0.07AbV-078046 in filter R on MJD  57634.390
V-078046 in filter R on MJD  57634.390
17.07± 0.09bV-078046 in filter I on MJD  57634.390
57638.43 17.11± 0.07bV-078046 in filter V on MJD  57638.430
-------- 17.00± 0.10bV-078046 in filter I on MJD  57638.430
57964.33 17.06± 0.05bV-078046 in filter V on MJD  57964.330
16.91± 0.07bV-078046 in filter B on MJD  57964.330
16.94± 0.06bV-078046 in filter R on MJD  57964.330
17.04± 0.06bV-078046 in filter I on MJD  57964.330
58045.18 17.11± 0.06bV-078046 in filter V on MJD  58045.180
16.99± 0.07bV-078046 in filter B on MJD  58045.180
17.01± 0.06bV-078046 in filter R on MJD  58045.180
----
58073.20 17.07± 0.05bV-078046 in filter V on MJD  58073.200
16.86± 0.06XV-078046 in filter B on MJD  58073.200
--------
58103.18 17.17± 0.06TbV-078046 in filter V on MJD  58103.180
------------
58108.11 17.11± 0.06bV-078046 in filter V on MJD  58108.110
16.98± 0.08bV-078046 in filter B on MJD  58108.110
---- 16.96± 0.09bV-078046 in filter I on MJD  58108.110
58312.39 17.09± 0.05bV-078046 in filter V on MJD  58312.390
17.11± 0.07bV-078046 in filter B on MJD  58312.390
--------
58316.35 17.35± 0.06bV-078046 in filter V on MJD  58316.350
17.21± 0.04bV-078046 in filter B on MJD  58316.350
--------
58317.37 17.05± 0.04bV-078046 in filter V on MJD  58317.370
16.95± 0.06bV-078046 in filter B on MJD  58317.370
V-078046 in filter B on MJD  58317.370
16.93± 0.04bV-078046 in filter R on MJD  58317.370
----
58341.36 17.25± 0.06AbV-078046 in filter V on MJD  58341.360
V-078046 in filter V on MJD  58341.360
-------- 17.17± 0.08AbV-078046 in filter I on MJD  58341.360
V-078046 in filter I on MJD  58341.360
58342.40 17.05± 0.05bV-078046 in filter V on MJD  58342.400
16.94± 0.06bV-078046 in filter B on MJD  58342.400
16.96± 0.05bV-078046 in filter R on MJD  58342.400
----
58373.15 17.25± 0.06bV-078046 in filter V on MJD  58373.150
17.30± 0.06bV-078046 in filter B on MJD  58373.150
--------
58375.14 17.14± 0.05bV-078046 in filter V on MJD  58375.140
---- 17.02± 0.05bV-078046 in filter R on MJD  58375.140
----
58420.10 17.05± 0.05bV-078046 in filter V on MJD  58420.100
16.93± 0.06bV-078046 in filter B on MJD  58420.100
---- 16.77± 0.07bV-078046 in filter I on MJD  58420.100
58433.02 17.26± 0.08bV-078046 in filter V on MJD  58433.020
---- 17.07± 0.06bV-078046 in filter R on MJD  58433.020
16.89± 0.09bV-078046 in filter I on MJD  58433.020
58672.39 17.00± 0.08bV-078046 in filter V on MJD  58672.390
---- 16.90± 0.06bV-078046 in filter R on MJD  58672.390
16.62± 0.09bV-078046 in filter I on MJD  58672.390
58673.38 17.12± 0.03bV-078046 in filter V on MJD  58673.380
17.14± 0.04bV-078046 in filter B on MJD  58673.380
--------
58695.36 17.08± 0.05bV-078046 in filter V on MJD  58695.360
16.97± 0.05bV-078046 in filter B on MJD  58695.360
16.97± 0.04bV-078046 in filter R on MJD  58695.360
----
58757.17 17.05± 0.05bV-078046 in filter V on MJD  58757.170
---- 16.94± 0.05bV-078046 in filter R on MJD  58757.170
----
58779.18 17.83± 0.05XV-078046 in filter V on MJD  58779.180
17.09± 0.05bV-078046 in filter B on MJD  58779.180
--------
58784.14 17.06± 0.05AbV-078046 in filter V on MJD  58784.140
V-078046 in filter V on MJD  58784.140
16.97± 0.06bV-078046 in filter B on MJD  58784.140
---- 16.93± 0.08bV-078046 in filter I on MJD  58784.140
58812.21 17.01± 0.05AbV-078046 in filter V on MJD  58812.210
V-078046 in filter V on MJD  58812.210
---- 16.92± 0.07bV-078046 in filter R on MJD  58812.210
16.92± 0.06bV-078046 in filter I on MJD  58812.210
58902.06 17.09± 0.04AbV-078046 in filter V on MJD  58902.060
V-078046 in filter V on MJD  58902.060
---- 16.95± 0.04bV-078046 in filter R on MJD  58902.060
17.04± 0.08bV-078046 in filter I on MJD  58902.060
59056.38 17.08± 0.04bV-078046 in filter V on MJD  59056.380
17.04± 0.06bV-078046 in filter B on MJD  59056.380
16.89± 0.05bV-078046 in filter R on MJD  59056.380
16.97± 0.08bV-078046 in filter I on MJD  59056.380
59059.39 17.11± 0.06AbV-078046 in filter V on MJD  59059.390
V-078046 in filter V on MJD  59059.390
16.97± 0.06bV-078046 in filter B on MJD  59059.390
17.05± 0.05bV-078046 in filter R on MJD  59059.390
17.05± 0.09bV-078046 in filter I on MJD  59059.390
59081.29 17.09± 0.05AbV-078046 in filter V on MJD  59081.290
V-078046 in filter V on MJD  59081.290
16.99± 0.04bV-078046 in filter B on MJD  59081.290
16.97± 0.05AbV-078046 in filter R on MJD  59081.290
V-078046 in filter R on MJD  59081.290
----
59082.32 17.14± 0.03bV-078046 in filter V on MJD  59082.320
17.01± 0.03bV-078046 in filter B on MJD  59082.320
V-078046 in filter B on MJD  59082.320
16.98± 0.04bV-078046 in filter R on MJD  59082.320
V-078046 in filter R on MJD  59082.320
V-078046 in filter R on MJD  59082.320
----
59084.29-------- 16.97± 0.06TbV-078046 in filter R on MJD  59084.290
----
59161.09 17.18± 0.05AbV-078046 in filter V on MJD  59161.090
V-078046 in filter V on MJD  59161.090
17.00± 0.05AbV-078046 in filter B on MJD  59161.090
V-078046 in filter B on MJD  59161.090
17.01± 0.05AbV-078046 in filter R on MJD  59161.090
V-078046 in filter R on MJD  59161.090
----
59171.11 17.05± 0.04AbV-078046 in filter V on MJD  59171.110
V-078046 in filter V on MJD  59171.110
17.02± 0.03bV-078046 in filter B on MJD  59171.110
---- 16.95± 0.07AbV-078046 in filter I on MJD  59171.110
V-078046 in filter I on MJD  59171.110
59227.09 17.11± 0.03AbV-078046 in filter V on MJD  59227.090
V-078046 in filter V on MJD  59227.090
17.02± 0.04AbV-078046 in filter B on MJD  59227.090
V-078046 in filter B on MJD  59227.090
16.98± 0.04bV-078046 in filter R on MJD  59227.090
----
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 V-078046Plot of color for V-078046

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 [0.39 mag]B [0.35 mag]R [0.30 mag]
B [0.39 mag]0.61 (26)
R [0.30 mag]0.42 (24)0.02 (16)
I [0.55 mag]0.13 (15)0.00 (9)0.04 (9)

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 V-078046

Plot to assess correlation between bands for V-078046

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)
2.06 | 1.31
R
(I|R)
0.96 | 1.330.19 | 1.16
I
(I|R)
0.74 | 0.790.00 | 0.800.39 | 0.93

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