Color composite thumbnail image of V-045901V-045901 (J013327.40+303029.5)



Target Notes

Color composite thumbnail image of V-045901

Classification: YSG

On the edge of but separated by 4 arcseconds from a group of LGGS stars >2 magnitudes fainter. Indicated in individual records when unresolved by bad seeing.

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
56140.40 17.50± 0.06bV-045901 in filter V on MJD  56140.400
---- 17.12± 0.08bV-045901 in filter R on MJD  56140.400
----
56599.22 17.42± 0.06bV-045901 in filter V on MJD  56599.220
17.92± 0.05bV-045901 in filter B on MJD  56599.220
17.17± 0.05bV-045901 in filter R on MJD  56599.220
----
56982.22 17.42± 0.06bV-045901 in filter V on MJD  56982.220
17.94± 0.06bV-045901 in filter B on MJD  56982.220
17.02± 0.07bV-045901 in filter R on MJD  56982.220
----
57035.14 17.34± 0.04bV-045901 in filter V on MJD  57035.140
17.83± 0.05bV-045901 in filter B on MJD  57035.140
17.15± 0.05bV-045901 in filter R on MJD  57035.140
----
57310.16 17.60± 0.06bV-045901 in filter V on MJD  57310.160
17.96± 0.05bV-045901 in filter B on MJD  57310.160
16.99± 0.05bV-045901 in filter R on MJD  57310.160
----
57328.19 17.48± 0.05bV-045901 in filter V on MJD  57328.190
17.99± 0.07bV-045901 in filter B on MJD  57328.190
17.05± 0.07bV-045901 in filter R on MJD  57328.190
----
57406.10 17.27± 0.05bV-045901 in filter V on MJD  57406.100
17.88± 0.08bV-045901 in filter B on MJD  57406.100
17.00± 0.05bV-045901 in filter R on MJD  57406.100
16.61± 0.07bV-045901 in filter I on MJD  57406.100
57634.41 17.38± 0.07bV-045901 in filter V on MJD  57634.410
17.94± 0.08bV-045901 in filter B on MJD  57634.410
16.92± 0.08bV-045901 in filter R on MJD  57634.410
----
57638.40 17.47± 0.05AbV-045901 in filter V on MJD  57638.400
V-045901 in filter V on MJD  57638.400
18.07± 0.05bV-045901 in filter B on MJD  57638.400
17.06± 0.04bV-045901 in filter R on MJD  57638.400
16.71± 0.08AbV-045901 in filter I on MJD  57638.400
V-045901 in filter I on MJD  57638.400
57988.43 17.43± 0.06TbV-045901 in filter V on MJD  57988.430
------------
58043.15 17.45± 0.04AbV-045901 in filter V on MJD  58043.150
V-045901 in filter V on MJD  58043.150
17.93± 0.05AbV-045901 in filter B on MJD  58043.150
V-045901 in filter B on MJD  58043.150
17.00± 0.05AbV-045901 in filter R on MJD  58043.150
V-045901 in filter R on MJD  58043.150
16.63± 0.10bV-045901 in filter I on MJD  58043.150
58108.17 17.39± 0.05bV-045901 in filter V on MJD  58108.170
17.79± 0.06bV-045901 in filter B on MJD  58108.170
---- 16.60± 0.09bV-045901 in filter I on MJD  58108.170
58339.40 17.35± 0.06bV-045901 in filter V on MJD  58339.400
17.85± 0.06bV-045901 in filter B on MJD  58339.400
16.98± 0.06bV-045901 in filter R on MJD  58339.400
----
58375.16 17.48± 0.05bV-045901 in filter V on MJD  58375.160
-------- 16.71± 0.09bV-045901 in filter I on MJD  58375.160
58433.02 17.54± 0.05bV-045901 in filter V on MJD  58433.020
---- 17.11± 0.05bV-045901 in filter R on MJD  58433.020
16.75± 0.09bV-045901 in filter I on MJD  58433.020
58673.38 17.53± 0.03bV-045901 in filter V on MJD  58673.380
18.14± 0.04bV-045901 in filter B on MJD  58673.380
--------
58695.39 17.55± 0.05bV-045901 in filter V on MJD  58695.390
---- 17.16± 0.04bV-045901 in filter R on MJD  58695.390
----
58696.41 17.55± 0.05bV-045901 in filter V on MJD  58696.410
18.15± 0.08bV-045901 in filter B on MJD  58696.410
17.12± 0.07bV-045901 in filter R on MJD  58696.410
V-045901 in filter R on MJD  58696.410
----
58750.22 17.53± 0.04bV-045901 in filter V on MJD  58750.220
18.04± 0.03bV-045901 in filter B on MJD  58750.220
---- 16.80± 0.08bV-045901 in filter I on MJD  58750.220
58757.17 17.49± 0.06bV-045901 in filter V on MJD  58757.170
---- 17.10± 0.05bV-045901 in filter R on MJD  58757.170
----
58784.14 17.55± 0.05AbV-045901 in filter V on MJD  58784.140
V-045901 in filter V on MJD  58784.140
---- 17.11± 0.04bV-045901 in filter R on MJD  58784.140
16.82± 0.08bV-045901 in filter I on MJD  58784.140
58812.20 17.43± 0.06bV-045901 in filter V on MJD  58812.200
---- 17.02± 0.07bV-045901 in filter R on MJD  58812.200
----
59059.40 17.60± 0.06bV-045901 in filter V on MJD  59059.400
---- 17.18± 0.05bV-045901 in filter R on MJD  59059.400
16.88± 0.09bV-045901 in filter I on MJD  59059.400
59081.34 17.63± 0.06AbV-045901 in filter V on MJD  59081.340
V-045901 in filter V on MJD  59081.340
18.07± 0.05bV-045901 in filter B on MJD  59081.340
V-045901 in filter B on MJD  59081.340
17.19± 0.05AbV-045901 in filter R on MJD  59081.340
V-045901 in filter R on MJD  59081.340
16.78± 0.08bV-045901 in filter I on MJD  59081.340
59082.35 17.62± 0.04AbV-045901 in filter V on MJD  59082.350
V-045901 in filter V on MJD  59082.350
18.14± 0.04AbV-045901 in filter B on MJD  59082.350
V-045901 in filter B on MJD  59082.350
V-045901 in filter B on MJD  59082.350
V-045901 in filter B on MJD  59082.350
17.21± 0.04AbV-045901 in filter R on MJD  59082.350
V-045901 in filter R on MJD  59082.350
V-045901 in filter R on MJD  59082.350
V-045901 in filter R on MJD  59082.350
----
59084.25-------- 17.20± 0.04TbV-045901 in filter R on MJD  59084.250
----
59161.12 17.41± 0.04AbV-045901 in filter V on MJD  59161.120
V-045901 in filter V on MJD  59161.120
17.82± 0.03bV-045901 in filter B on MJD  59161.120
17.00± 0.05AbV-045901 in filter R on MJD  59161.120
V-045901 in filter R on MJD  59161.120
16.69± 0.09bV-045901 in filter I on MJD  59161.120
59171.14 17.48± 0.05AbV-045901 in filter V on MJD  59171.140
V-045901 in filter V on MJD  59171.140
V-045901 in filter V on MJD  59171.140
17.93± 0.06AbV-045901 in filter B on MJD  59171.140
V-045901 in filter B on MJD  59171.140
V-045901 in filter B on MJD  59171.140
17.05± 0.05bV-045901 in filter R on MJD  59171.140
16.70± 0.08AbV-045901 in filter I on MJD  59171.140
V-045901 in filter I on MJD  59171.140
V-045901 in filter I on MJD  59171.140
59227.14 17.61± 0.05AbV-045901 in filter V on MJD  59227.140
V-045901 in filter V on MJD  59227.140
18.10± 0.05AbV-045901 in filter B on MJD  59227.140
V-045901 in filter B on MJD  59227.140
17.18± 0.05AbV-045901 in filter R on MJD  59227.140
V-045901 in filter R on MJD  59227.140
16.83± 0.08bV-045901 in filter I on MJD  59227.140
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-045901Plot of color for V-045901

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 [0.35 mag]B [0.36 mag]R [0.29 mag]
B [0.35 mag]0.63 (19)
R [0.29 mag]0.38 (23)0.32 (16)
I [0.28 mag]0.76 (13)0.69 (9)0.78 (10)

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-045901

Plot to assess correlation between bands for V-045901

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)
4.03 | 1.15
R
(I|R)
1.80 | 1.180.03 | 0.10
I
(I|R)
1.82 | 1.761.83 | 2.581.43 | 1.55

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