Color composite thumbnail image of V-120530V-120530 (J013411.33+303628.0)



Target Notes

Color composite thumbnail image of V-120530

Classification: Warm-Hypergiant

Resolved from N120786 (J013411.56+303625.4) of comparable brightness 3 arcseconds away.

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
56140.37 18.47± 0.08-V-120530 in filter V on MJD  56140.370
---- 18.44± 0.29-V-120530 in filter R on MJD  56140.370
----
56599.17 18.39± 0.07-V-120530 in filter V on MJD  56599.170
18.48± 0.08-V-120530 in filter B on MJD  56599.170
18.11± 0.07-V-120530 in filter R on MJD  56599.170
----
56976.16 18.41± 0.06-V-120530 in filter V on MJD  56976.160
18.44± 0.07-V-120530 in filter B on MJD  56976.160
18.23± 0.06-V-120530 in filter R on MJD  56976.160
----
57038.13 18.50± 0.05-V-120530 in filter V on MJD  57038.130
18.56± 0.06-V-120530 in filter B on MJD  57038.130
18.25± 0.05-V-120530 in filter R on MJD  57038.130
----
57310.13 18.42± 0.08-V-120530 in filter V on MJD  57310.130
18.39± 0.08-V-120530 in filter B on MJD  57310.130
18.11± 0.07-V-120530 in filter R on MJD  57310.130
----
57335.18 18.40± 0.07-V-120530 in filter V on MJD  57335.180
---- 18.09± 0.06-V-120530 in filter R on MJD  57335.180
----
57401.10 18.38± 0.06-V-120530 in filter V on MJD  57401.100
18.42± 0.06-V-120530 in filter B on MJD  57401.100
--------
57406.10 18.53± 0.12-V-120530 in filter V on MJD  57406.100
18.20± 0.08-V-120530 in filter B on MJD  57406.100
18.23± 0.09-V-120530 in filter R on MJD  57406.100
18.08± 0.14-V-120530 in filter I on MJD  57406.100
57634.37 18.42± 0.06AV-120530 in filter V on MJD  57634.370
V-120530 in filter V on MJD  57634.370
V-120530 in filter V on MJD  57634.370
18.48± 0.08AXV-120530 in filter B on MJD  57634.370
V-120530 in filter B on MJD  57634.370
V-120530 in filter B on MJD  57634.370
18.19± 0.07AXV-120530 in filter R on MJD  57634.370
V-120530 in filter R on MJD  57634.370
V-120530 in filter R on MJD  57634.370
18.23± 0.09-V-120530 in filter I on MJD  57634.370
57638.43 18.44± 0.07-V-120530 in filter V on MJD  57638.430
-------- 18.20± 0.12-V-120530 in filter I on MJD  57638.430
57687.13 18.54± 0.06-V-120530 in filter V on MJD  57687.130
18.36± 0.08-V-120530 in filter B on MJD  57687.130
18.25± 0.06-V-120530 in filter R on MJD  57687.130
17.84± 0.09-V-120530 in filter I on MJD  57687.130
57964.35 18.43± 0.05AV-120530 in filter V on MJD  57964.350
V-120530 in filter V on MJD  57964.350
18.47± 0.07AV-120530 in filter B on MJD  57964.350
V-120530 in filter B on MJD  57964.350
18.18± 0.06AV-120530 in filter R on MJD  57964.350
V-120530 in filter R on MJD  57964.350
18.52± 0.11AV-120530 in filter I on MJD  57964.350
V-120530 in filter I on MJD  57964.350
58045.16 18.50± 0.07AV-120530 in filter V on MJD  58045.160
V-120530 in filter V on MJD  58045.160
18.57± 0.09AV-120530 in filter B on MJD  58045.160
V-120530 in filter B on MJD  58045.160
18.20± 0.07AV-120530 in filter R on MJD  58045.160
V-120530 in filter R on MJD  58045.160
----
58073.19 18.41± 0.05AV-120530 in filter V on MJD  58073.190
V-120530 in filter V on MJD  58073.190
18.48± 0.08AV-120530 in filter B on MJD  58073.190
V-120530 in filter B on MJD  58073.190
--------
58103.16 18.42± 0.07AV-120530 in filter V on MJD  58103.160
V-120530 in filter V on MJD  58103.160
-------- 18.61± 0.17-V-120530 in filter I on MJD  58103.160
58108.11 18.42± 0.06-V-120530 in filter V on MJD  58108.110
18.45± 0.09-V-120530 in filter B on MJD  58108.110
---- 18.58± 0.31-V-120530 in filter I on MJD  58108.110
58312.39 18.47± 0.06-V-120530 in filter V on MJD  58312.390
18.85± 0.15XV-120530 in filter B on MJD  58312.390
--------
58316.38 18.41± 0.05-V-120530 in filter V on MJD  58316.380
18.64± 0.07-V-120530 in filter B on MJD  58316.380
18.17± 0.04-V-120530 in filter R on MJD  58316.380
18.06± 0.06-V-120530 in filter I on MJD  58316.380
58317.37 18.45± 0.05-V-120530 in filter V on MJD  58317.370
18.53± 0.07-V-120530 in filter B on MJD  58317.370
V-120530 in filter B on MJD  58317.370
18.30± 0.06-V-120530 in filter R on MJD  58317.370
V-120530 in filter R on MJD  58317.370
----
58341.34 18.45± 0.08-V-120530 in filter V on MJD  58341.340
-------- 18.18± 0.10-V-120530 in filter I on MJD  58341.340
58342.38 18.40± 0.06AV-120530 in filter V on MJD  58342.380
V-120530 in filter V on MJD  58342.380
18.50± 0.09AV-120530 in filter B on MJD  58342.380
V-120530 in filter B on MJD  58342.380
18.36± 0.08AV-120530 in filter R on MJD  58342.380
V-120530 in filter R on MJD  58342.380
18.27± 0.09-V-120530 in filter I on MJD  58342.380
V-120530 in filter I on MJD  58342.380
58375.14 18.37± 0.07-V-120530 in filter V on MJD  58375.140
---- 18.33± 0.07-V-120530 in filter R on MJD  58375.140
----
58420.08 18.42± 0.06AV-120530 in filter V on MJD  58420.080
V-120530 in filter V on MJD  58420.080
18.56± 0.08AV-120530 in filter B on MJD  58420.080
V-120530 in filter B on MJD  58420.080
18.27± 0.07-V-120530 in filter R on MJD  58420.080
18.12± 0.12AV-120530 in filter I on MJD  58420.080
V-120530 in filter I on MJD  58420.080
58433.00 18.51± 0.09-V-120530 in filter V on MJD  58433.000
---- 18.23± 0.07-V-120530 in filter R on MJD  58433.000
18.39± 0.13-V-120530 in filter I on MJD  58433.000
58672.39 18.40± 0.12-V-120530 in filter V on MJD  58672.390
---- 18.27± 0.08-V-120530 in filter R on MJD  58672.390
> 18.05-V-120530 in filter I on MJD  58672.390
58695.36 18.43± 0.05-V-120530 in filter V on MJD  58695.360
18.48± 0.06-V-120530 in filter B on MJD  58695.360
18.22± 0.05-V-120530 in filter R on MJD  58695.360
----
58784.12 18.47± 0.06-V-120530 in filter V on MJD  58784.120
18.54± 0.06-V-120530 in filter B on MJD  58784.120
--------
58812.22 18.31± 0.05-V-120530 in filter V on MJD  58812.220
-------- 18.14± 0.08-V-120530 in filter I on MJD  58812.220
58902.07 18.40± 0.05-V-120530 in filter V on MJD  58902.070
---- 18.18± 0.06-V-120530 in filter R on MJD  58902.070
----
59059.38 18.50± 0.06-V-120530 in filter V on MJD  59059.380
18.51± 0.06-V-120530 in filter B on MJD  59059.380
--------
59081.26 18.43± 0.06-V-120530 in filter V on MJD  59081.260
---- 18.22± 0.06-V-120530 in filter R on MJD  59081.260
----
59084.34-------- 18.23± 0.04TV-120530 in filter R on MJD  59084.340
----
59161.07 18.34± 0.06-V-120530 in filter V on MJD  59161.070
18.53± 0.08-V-120530 in filter B on MJD  59161.070
18.10± 0.05-V-120530 in filter R on MJD  59161.070
----
59171.09 18.32± 0.06-V-120530 in filter V on MJD  59171.090
-------- 18.20± 0.09-V-120530 in filter I on MJD  59171.090
59227.08 18.43± 0.04-V-120530 in filter V on MJD  59227.080
18.55± 0.05-V-120530 in filter B on MJD  59227.080
18.25± 0.05-V-120530 in filter R on MJD  59227.080
----
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-120530Plot of color for V-120530

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 [0.45 mag]B [0.22 mag]R [0.35 mag]
B [0.45 mag]0.09 (20)
R [0.35 mag]0.06 (22)0.00 (15)
I [0.77 mag]0.05 (14)0.02 (7)0.01 (7)

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-120530

Plot to assess correlation between bands for V-120530

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)
-0.13 | 1.42
R
(I|R)
0.26 | 0.61-0.40 | 0.21
I
(I|R)
-0.38 | 0.500.57 | 0.780.02 | 0.39

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