Color composite thumbnail image of M33-013311.70M33-013311.70 (J013311.70+302258.9)



Target Notes

Color composite thumbnail image of M33-013311.70

Classification: YSG

No blend concerns.

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 17.67± 0.06-M33-013311.70 in filter V on MJD  56140.400
---- 17.51± 0.09-M33-013311.70 in filter R on MJD  56140.400
----
56599.22 17.62± 0.06-M33-013311.70 in filter V on MJD  56599.220
17.77± 0.05-M33-013311.70 in filter B on MJD  56599.220
17.34± 0.05-M33-013311.70 in filter R on MJD  56599.220
----
57035.14 17.64± 0.04-M33-013311.70 in filter V on MJD  57035.140
17.78± 0.05-M33-013311.70 in filter B on MJD  57035.140
17.30± 0.05-M33-013311.70 in filter R on MJD  57035.140
----
57310.16 17.55± 0.05-M33-013311.70 in filter V on MJD  57310.160
17.80± 0.05-M33-013311.70 in filter B on MJD  57310.160
17.31± 0.05-M33-013311.70 in filter R on MJD  57310.160
----
57634.41 17.49± 0.07-M33-013311.70 in filter V on MJD  57634.410
17.74± 0.08-M33-013311.70 in filter B on MJD  57634.410
17.25± 0.07-M33-013311.70 in filter R on MJD  57634.410
----
57638.40 17.61± 0.05AM33-013311.70 in filter V on MJD  57638.400
M33-013311.70 in filter V on MJD  57638.400
17.91± 0.04-M33-013311.70 in filter B on MJD  57638.400
17.39± 0.04-M33-013311.70 in filter R on MJD  57638.400
17.07± 0.08AM33-013311.70 in filter I on MJD  57638.400
M33-013311.70 in filter I on MJD  57638.400
57988.43 17.61± 0.06TM33-013311.70 in filter V on MJD  57988.430
------------
58043.16 17.55± 0.05-M33-013311.70 in filter V on MJD  58043.160
17.80± 0.06-M33-013311.70 in filter B on MJD  58043.160
17.31± 0.06-M33-013311.70 in filter R on MJD  58043.160
17.05± 0.10-M33-013311.70 in filter I on MJD  58043.160
58108.17 17.59± 0.05-M33-013311.70 in filter V on MJD  58108.170
17.79± 0.06-M33-013311.70 in filter B on MJD  58108.170
---- 17.05± 0.09-M33-013311.70 in filter I on MJD  58108.170
58339.40 17.59± 0.06-M33-013311.70 in filter V on MJD  58339.400
17.78± 0.06-M33-013311.70 in filter B on MJD  58339.400
17.30± 0.06-M33-013311.70 in filter R on MJD  58339.400
----
58375.16 17.59± 0.05-M33-013311.70 in filter V on MJD  58375.160
-------- 17.03± 0.09-M33-013311.70 in filter I on MJD  58375.160
58433.02 17.56± 0.05-M33-013311.70 in filter V on MJD  58433.020
---- 17.28± 0.05-M33-013311.70 in filter R on MJD  58433.020
17.17± 0.09-M33-013311.70 in filter I on MJD  58433.020
58695.39 17.54± 0.05-M33-013311.70 in filter V on MJD  58695.390
---- 17.26± 0.04-M33-013311.70 in filter R on MJD  58695.390
----
58696.41 17.53± 0.05-M33-013311.70 in filter V on MJD  58696.410
17.77± 0.07-M33-013311.70 in filter B on MJD  58696.410
17.22± 0.07-M33-013311.70 in filter R on MJD  58696.410
M33-013311.70 in filter R on MJD  58696.410
----
58750.22 17.51± 0.04-M33-013311.70 in filter V on MJD  58750.220
17.79± 0.03-M33-013311.70 in filter B on MJD  58750.220
---- 16.93± 0.08-M33-013311.70 in filter I on MJD  58750.220
58757.17 17.54± 0.05-M33-013311.70 in filter V on MJD  58757.170
---- 17.29± 0.05-M33-013311.70 in filter R on MJD  58757.170
----
58784.14 17.57± 0.05AM33-013311.70 in filter V on MJD  58784.140
M33-013311.70 in filter V on MJD  58784.140
---- 17.32± 0.04-M33-013311.70 in filter R on MJD  58784.140
17.09± 0.08-M33-013311.70 in filter I on MJD  58784.140
59059.40 17.52± 0.06-M33-013311.70 in filter V on MJD  59059.400
---- 17.27± 0.05-M33-013311.70 in filter R on MJD  59059.400
17.00± 0.08-M33-013311.70 in filter I on MJD  59059.400
59081.34 17.56± 0.05AM33-013311.70 in filter V on MJD  59081.340
M33-013311.70 in filter V on MJD  59081.340
17.79± 0.05AM33-013311.70 in filter B on MJD  59081.340
M33-013311.70 in filter B on MJD  59081.340
17.30± 0.05AM33-013311.70 in filter R on MJD  59081.340
M33-013311.70 in filter R on MJD  59081.340
17.08± 0.07-M33-013311.70 in filter I on MJD  59081.340
59082.38 17.57± 0.05-M33-013311.70 in filter V on MJD  59082.380
17.83± 0.03-M33-013311.70 in filter B on MJD  59082.380
M33-013311.70 in filter B on MJD  59082.380
M33-013311.70 in filter B on MJD  59082.380
17.33± 0.04-M33-013311.70 in filter R on MJD  59082.380
M33-013311.70 in filter R on MJD  59082.380
M33-013311.70 in filter R on MJD  59082.380
----
59084.38-------- 17.29± 0.07TM33-013311.70 in filter R on MJD  59084.380
M33-013311.70 in filter R on MJD  59084.380
----
59084.25-------- 17.27± 0.04TM33-013311.70 in filter R on MJD  59084.250
M33-013311.70 in filter R on MJD  59084.250
----
59161.14 17.51± 0.04-M33-013311.70 in filter V on MJD  59161.140
---- 17.25± 0.04-M33-013311.70 in filter R on MJD  59161.140
16.96± 0.09-M33-013311.70 in filter I on MJD  59161.140
59171.15 17.53± 0.05AM33-013311.70 in filter V on MJD  59171.150
M33-013311.70 in filter V on MJD  59171.150
17.72± 0.07AM33-013311.70 in filter B on MJD  59171.150
M33-013311.70 in filter B on MJD  59171.150
17.25± 0.05-M33-013311.70 in filter R on MJD  59171.150
16.93± 0.08AM33-013311.70 in filter I on MJD  59171.150
M33-013311.70 in filter I on MJD  59171.150
59227.14 17.50± 0.05AM33-013311.70 in filter V on MJD  59227.140
M33-013311.70 in filter V on MJD  59227.140
17.69± 0.05AM33-013311.70 in filter B on MJD  59227.140
M33-013311.70 in filter B on MJD  59227.140
17.24± 0.05AM33-013311.70 in filter R on MJD  59227.140
M33-013311.70 in filter R on MJD  59227.140
16.99± 0.08-M33-013311.70 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 M33-013311.70Plot of color for M33-013311.70

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 [0.22 mag]B [0.17 mag]R [0.29 mag]
B [0.22 mag]0.31 (14)
R [0.29 mag]0.68 (19)0.74 (12)
I [0.25 mag]0.39 (12)0.33 (7)0.28 (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 M33-013311.70

Plot to assess correlation between bands for M33-013311.70

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)
0.48 | 0.96
R
(I|R)
0.76 | 0.891.23 | 0.08
I
(I|R)
0.41 | 0.910.58 | 1.260.52 | 1.20

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