Color composite thumbnail image of M33C-22178M33C-22178 (J013355.78+304831.3)



Target Notes

Color composite thumbnail image of M33C-22178

Classification: YSG

No blend concerns but marked "X" when signal to noise is too low to get a good PSF fit.

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 19.30± 0.10TM33C-22178 in filter V on MJD  56140.390
----> 18.24-M33C-22178 in filter R on MJD  56140.390
----
56593.16 19.28± 0.09-M33C-22178 in filter V on MJD  56593.160
19.66± 0.12XM33C-22178 in filter B on MJD  56593.160
--------
56599.19 19.32± 0.11-M33C-22178 in filter V on MJD  56599.190
19.63± 0.11-M33C-22178 in filter B on MJD  56599.190
19.10± 0.11-M33C-22178 in filter R on MJD  56599.190
----
56976.18 19.26± 0.11AM33C-22178 in filter V on MJD  56976.180
M33C-22178 in filter V on MJD  56976.180
19.52± 0.12AM33C-22178 in filter B on MJD  56976.180
M33C-22178 in filter B on MJD  56976.180
18.99± 0.09AM33C-22178 in filter R on MJD  56976.180
M33C-22178 in filter R on MJD  56976.180
----
57038.13 19.53± 0.08-M33C-22178 in filter V on MJD  57038.130
19.87± 0.14XM33C-22178 in filter B on MJD  57038.130
19.37± 0.09-M33C-22178 in filter R on MJD  57038.130
----
57638.35 19.33± 0.06-M33C-22178 in filter V on MJD  57638.350
19.64± 0.09-M33C-22178 in filter B on MJD  57638.350
19.21± 0.07-M33C-22178 in filter R on MJD  57638.350
19.29± 0.15-M33C-22178 in filter I on MJD  57638.350
57964.37 19.32± 0.07-M33C-22178 in filter V on MJD  57964.370
19.50± 0.10XM33C-22178 in filter B on MJD  57964.370
19.04± 0.07-M33C-22178 in filter R on MJD  57964.370
19.30± 0.16-M33C-22178 in filter I on MJD  57964.370
57988.41 19.37± 0.09-M33C-22178 in filter V on MJD  57988.410
20.05± 0.16XM33C-22178 in filter B on MJD  57988.410
--------
58043.10 19.34± 0.11XM33C-22178 in filter V on MJD  58043.100
---- 19.12± 0.09-M33C-22178 in filter R on MJD  58043.100
18.39± 0.12-M33C-22178 in filter I on MJD  58043.100
58045.15 19.60± 0.16XM33C-22178 in filter V on MJD  58045.150
19.91± 0.17-M33C-22178 in filter B on MJD  58045.150
19.46± 0.15-M33C-22178 in filter R on MJD  58045.150
----
58073.18 20.12± 0.19XM33C-22178 in filter V on MJD  58073.180
19.82± 0.12XM33C-22178 in filter B on MJD  58073.180
--------
58103.16 19.43± 0.09AM33C-22178 in filter V on MJD  58103.160
M33C-22178 in filter V on MJD  58103.160
19.62± 0.09-M33C-22178 in filter B on MJD  58103.160
---- 18.84± 0.17XM33C-22178 in filter I on MJD  58103.160
58108.14 19.36± 0.11XM33C-22178 in filter V on MJD  58108.140
19.54± 0.12XM33C-22178 in filter B on MJD  58108.140
---- 18.70± 0.12-M33C-22178 in filter I on MJD  58108.140
58316.38 19.55± 0.10-M33C-22178 in filter V on MJD  58316.380
19.75± 0.13-M33C-22178 in filter B on MJD  58316.380
19.28± 0.08-M33C-22178 in filter R on MJD  58316.380
18.97± 0.14XM33C-22178 in filter I on MJD  58316.380
58317.39 19.37± 0.11-M33C-22178 in filter V on MJD  58317.390
---- 19.10± 0.12-M33C-22178 in filter R on MJD  58317.390
M33C-22178 in filter R on MJD  58317.390
----
58341.40 19.50± 0.10-M33C-22178 in filter V on MJD  58341.400
19.57± 0.11-M33C-22178 in filter B on MJD  58341.400
19.03± 0.10-M33C-22178 in filter R on MJD  58341.400
18.62± 0.13-M33C-22178 in filter I on MJD  58341.400
58342.36 19.51± 0.12-M33C-22178 in filter V on MJD  58342.360
19.61± 0.14-M33C-22178 in filter B on MJD  58342.360
M33C-22178 in filter B on MJD  58342.360
19.12± 0.11-M33C-22178 in filter R on MJD  58342.360
M33C-22178 in filter R on MJD  58342.360
18.70± 0.13-M33C-22178 in filter I on MJD  58342.360
M33C-22178 in filter I on MJD  58342.360
58403.15 20.56± 0.31TXM33C-22178 in filter V on MJD  58403.150
--------> 18.37-M33C-22178 in filter I on MJD  58403.150
58420.06 19.85± 0.17XM33C-22178 in filter V on MJD  58420.060
20.53± 0.29XM33C-22178 in filter B on MJD  58420.060
19.45± 0.13XM33C-22178 in filter R on MJD  58420.060
> 18.36-M33C-22178 in filter I on MJD  58420.060
58696.39 19.30± 0.07-M33C-22178 in filter V on MJD  58696.390
19.39± 0.09-M33C-22178 in filter B on MJD  58696.390
19.02± 0.06-M33C-22178 in filter R on MJD  58696.390
----
58779.15 19.81± 0.15XM33C-22178 in filter V on MJD  58779.150
---- 20.00± 0.20XM33C-22178 in filter R on MJD  58779.150
> 18.37-M33C-22178 in filter I on MJD  58779.150
58902.06 19.42± 0.09AXM33C-22178 in filter V on MJD  58902.060
M33C-22178 in filter V on MJD  58902.060
---- 19.03± 0.08XM33C-22178 in filter R on MJD  58902.060
19.09± 0.17XM33C-22178 in filter I on MJD  58902.060
59056.38 19.52± 0.08-M33C-22178 in filter V on MJD  59056.380
19.58± 0.10-M33C-22178 in filter B on MJD  59056.380
19.14± 0.07-M33C-22178 in filter R on MJD  59056.380
19.03± 0.15-M33C-22178 in filter I on MJD  59056.380
59081.33 19.45± 0.07-M33C-22178 in filter V on MJD  59081.330
19.54± 0.09-M33C-22178 in filter B on MJD  59081.330
19.24± 0.07-M33C-22178 in filter R on MJD  59081.330
----
59082.35 19.36± 0.07-M33C-22178 in filter V on MJD  59082.350
19.53± 0.09-M33C-22178 in filter B on MJD  59082.350
M33C-22178 in filter B on MJD  59082.350
19.17± 0.07-M33C-22178 in filter R on MJD  59082.350
M33C-22178 in filter R on MJD  59082.350
----
59084.29-------- 19.19± 0.07TM33C-22178 in filter R on MJD  59084.290
----
59161.11 19.40± 0.08-M33C-22178 in filter V on MJD  59161.110
19.58± 0.09-M33C-22178 in filter B on MJD  59161.110
19.24± 0.10-M33C-22178 in filter R on MJD  59161.110
----
59171.08 19.66± 0.13AM33C-22178 in filter V on MJD  59171.080
M33C-22178 in filter V on MJD  59171.080
19.62± 0.13-M33C-22178 in filter B on MJD  59171.080
19.24± 0.12-M33C-22178 in filter R on MJD  59171.080
19.04± 0.17AM33C-22178 in filter I on MJD  59171.080
M33C-22178 in filter I on MJD  59171.080
59227.08 19.42± 0.07AM33C-22178 in filter V on MJD  59227.080
M33C-22178 in filter V on MJD  59227.080
M33C-22178 in filter V on MJD  59227.080
19.62± 0.08AM33C-22178 in filter B on MJD  59227.080
M33C-22178 in filter B on MJD  59227.080
M33C-22178 in filter B on MJD  59227.080
19.23± 0.07AM33C-22178 in filter R on MJD  59227.080
M33C-22178 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 M33C-22178Plot of color for M33C-22178

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 [0.52 mag]B [0.41 mag]R [0.47 mag]
B [0.52 mag]0.22 (14)
R [0.47 mag]0.34 (16)0.64 (14)
I [0.90 mag]0.28 (6)0.53 (5)0.08 (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 M33C-22178

Plot to assess correlation between bands for M33C-22178

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)
0.43 | 0.59
R
(I|R)
0.92 | 0.911.07 | 0.13
I
(I|R)
-1.47 | 0.720.36 | 0.130.51 | 0.32

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