Color composite thumbnail image of M33-013317.22M33-013317.22 (J013317.22+303201.6 )



Target Notes

Color composite thumbnail image of M33-013317.22

Classification: Fe_emission

(Candidate LBV) Seven LGGS stars >2 magnitude fainter within 5 arcseconds. Cosmic ray hit interferes with B measure on 57035.14.

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 18.38± 0.06bM33-013317.22 in filter V on MJD  56140.400
---- 17.72± 0.12bM33-013317.22 in filter R on MJD  56140.400
----
56599.21 18.35± 0.06AbM33-013317.22 in filter V on MJD  56599.210
M33-013317.22 in filter V on MJD  56599.210
18.80± 0.08AbM33-013317.22 in filter B on MJD  56599.210
M33-013317.22 in filter B on MJD  56599.210
17.70± 0.06AbM33-013317.22 in filter R on MJD  56599.210
M33-013317.22 in filter R on MJD  56599.210
----
56976.19 18.56± 0.08bM33-013317.22 in filter V on MJD  56976.190
18.72± 0.07bM33-013317.22 in filter B on MJD  56976.190
17.79± 0.07bM33-013317.22 in filter R on MJD  56976.190
----
56982.22 18.51± 0.07bM33-013317.22 in filter V on MJD  56982.220
18.74± 0.07bM33-013317.22 in filter B on MJD  56982.220
17.87± 0.07bM33-013317.22 in filter R on MJD  56982.220
----
57035.14 18.32± 0.07bM33-013317.22 in filter V on MJD  57035.140
18.79± 0.10XM33-013317.22 in filter B on MJD  57035.140
17.63± 0.05bM33-013317.22 in filter R on MJD  57035.140
----
57310.16 18.36± 0.07bM33-013317.22 in filter V on MJD  57310.160
18.75± 0.08bM33-013317.22 in filter B on MJD  57310.160
17.89± 0.06bM33-013317.22 in filter R on MJD  57310.160
----
57328.17 18.41± 0.05AbM33-013317.22 in filter V on MJD  57328.170
M33-013317.22 in filter V on MJD  57328.170
18.77± 0.07AbM33-013317.22 in filter B on MJD  57328.170
M33-013317.22 in filter B on MJD  57328.170
17.79± 0.06AbM33-013317.22 in filter R on MJD  57328.170
M33-013317.22 in filter R on MJD  57328.170
----
57406.10 18.20± 0.08bM33-013317.22 in filter V on MJD  57406.100
> 18.09-M33-013317.22 in filter B on MJD  57406.100
17.80± 0.07bM33-013317.22 in filter R on MJD  57406.100
17.09± 0.08bM33-013317.22 in filter I on MJD  57406.100
57634.41 18.38± 0.07bM33-013317.22 in filter V on MJD  57634.410
18.79± 0.09bM33-013317.22 in filter B on MJD  57634.410
17.82± 0.08bM33-013317.22 in filter R on MJD  57634.410
----
57638.40 18.46± 0.06AbM33-013317.22 in filter V on MJD  57638.400
M33-013317.22 in filter V on MJD  57638.400
18.88± 0.06bM33-013317.22 in filter B on MJD  57638.400
17.93± 0.04bM33-013317.22 in filter R on MJD  57638.400
17.09± 0.09AbM33-013317.22 in filter I on MJD  57638.400
M33-013317.22 in filter I on MJD  57638.400
57964.40 18.44± 0.05bM33-013317.22 in filter V on MJD  57964.400
-------- 17.10± 0.07bM33-013317.22 in filter I on MJD  57964.400
M33-013317.22 in filter I on MJD  57964.400
57988.43 18.36± 0.07bTM33-013317.22 in filter V on MJD  57988.430
------------
58043.13 18.50± 0.06bM33-013317.22 in filter V on MJD  58043.130
18.72± 0.06bM33-013317.22 in filter B on MJD  58043.130
17.87± 0.05bM33-013317.22 in filter R on MJD  58043.130
----
58073.22 18.37± 0.06bM33-013317.22 in filter V on MJD  58073.220
19.05± 0.09bM33-013317.22 in filter B on MJD  58073.220
--------
58108.13 18.54± 0.06AbM33-013317.22 in filter V on MJD  58108.130
M33-013317.22 in filter V on MJD  58108.130
18.68± 0.06AbM33-013317.22 in filter B on MJD  58108.130
M33-013317.22 in filter B on MJD  58108.130
---- 17.04± 0.08AbM33-013317.22 in filter I on MJD  58108.130
M33-013317.22 in filter I on MJD  58108.130
58316.35 18.57± 0.07bM33-013317.22 in filter V on MJD  58316.350
18.96± 0.06bM33-013317.22 in filter B on MJD  58316.350
--------
58339.40 18.49± 0.06bM33-013317.22 in filter V on MJD  58339.400
18.70± 0.09bM33-013317.22 in filter B on MJD  58339.400
17.78± 0.06bM33-013317.22 in filter R on MJD  58339.400
----
58341.37 18.47± 0.06bM33-013317.22 in filter V on MJD  58341.370
-------- 17.05± 0.08bM33-013317.22 in filter I on MJD  58341.370
58373.15 18.50± 0.08bM33-013317.22 in filter V on MJD  58373.150
18.80± 0.09bM33-013317.22 in filter B on MJD  58373.150
--------
58375.16 18.28± 0.06bM33-013317.22 in filter V on MJD  58375.160
-------- 16.96± 0.09bM33-013317.22 in filter I on MJD  58375.160
58433.02 18.51± 0.07bM33-013317.22 in filter V on MJD  58433.020
---- 17.86± 0.06bM33-013317.22 in filter R on MJD  58433.020
17.19± 0.09bM33-013317.22 in filter I on MJD  58433.020
58673.38 18.50± 0.05bM33-013317.22 in filter V on MJD  58673.380
18.95± 0.08bM33-013317.22 in filter B on MJD  58673.380
--------
58695.39 18.41± 0.05bM33-013317.22 in filter V on MJD  58695.390
---- 17.83± 0.04bM33-013317.22 in filter R on MJD  58695.390
----
58696.41 18.52± 0.06bM33-013317.22 in filter V on MJD  58696.410
18.92± 0.12bM33-013317.22 in filter B on MJD  58696.410
17.83± 0.08bM33-013317.22 in filter R on MJD  58696.410
M33-013317.22 in filter R on MJD  58696.410
----
58750.20 18.40± 0.05AbM33-013317.22 in filter V on MJD  58750.200
M33-013317.22 in filter V on MJD  58750.200
18.95± 0.05bM33-013317.22 in filter B on MJD  58750.200
17.81± 0.05bM33-013317.22 in filter R on MJD  58750.200
17.06± 0.08bM33-013317.22 in filter I on MJD  58750.200
58757.17 18.32± 0.06bM33-013317.22 in filter V on MJD  58757.170
---- 17.82± 0.05bM33-013317.22 in filter R on MJD  58757.170
----
58779.18 18.33± 0.05bM33-013317.22 in filter V on MJD  58779.180
18.78± 0.11bM33-013317.22 in filter B on MJD  58779.180
--------
58784.14 18.42± 0.05AbM33-013317.22 in filter V on MJD  58784.140
M33-013317.22 in filter V on MJD  58784.140
---- 17.83± 0.05bM33-013317.22 in filter R on MJD  58784.140
17.12± 0.08bM33-013317.22 in filter I on MJD  58784.140
58812.20 18.43± 0.07bM33-013317.22 in filter V on MJD  58812.200
---- 17.83± 0.07bM33-013317.22 in filter R on MJD  58812.200
----
59059.40 18.43± 0.07bM33-013317.22 in filter V on MJD  59059.400
---- 17.89± 0.05bM33-013317.22 in filter R on MJD  59059.400
17.10± 0.09bM33-013317.22 in filter I on MJD  59059.400
59081.34 18.41± 0.06AbM33-013317.22 in filter V on MJD  59081.340
M33-013317.22 in filter V on MJD  59081.340
18.68± 0.06AbM33-013317.22 in filter B on MJD  59081.340
M33-013317.22 in filter B on MJD  59081.340
17.81± 0.05AbM33-013317.22 in filter R on MJD  59081.340
M33-013317.22 in filter R on MJD  59081.340
17.00± 0.07bM33-013317.22 in filter I on MJD  59081.340
59082.35 18.43± 0.05AbM33-013317.22 in filter V on MJD  59082.350
M33-013317.22 in filter V on MJD  59082.350
18.80± 0.05AbM33-013317.22 in filter B on MJD  59082.350
M33-013317.22 in filter B on MJD  59082.350
M33-013317.22 in filter B on MJD  59082.350
M33-013317.22 in filter B on MJD  59082.350
17.80± 0.04AbM33-013317.22 in filter R on MJD  59082.350
M33-013317.22 in filter R on MJD  59082.350
M33-013317.22 in filter R on MJD  59082.350
M33-013317.22 in filter R on MJD  59082.350
----
59084.25-------- 17.80± 0.04TbM33-013317.22 in filter R on MJD  59084.250
----
59161.12 18.38± 0.05AbM33-013317.22 in filter V on MJD  59161.120
M33-013317.22 in filter V on MJD  59161.120
18.60± 0.05bM33-013317.22 in filter B on MJD  59161.120
17.78± 0.05AbM33-013317.22 in filter R on MJD  59161.120
M33-013317.22 in filter R on MJD  59161.120
17.16± 0.09bM33-013317.22 in filter I on MJD  59161.120
59171.14 18.41± 0.06AbM33-013317.22 in filter V on MJD  59171.140
M33-013317.22 in filter V on MJD  59171.140
M33-013317.22 in filter V on MJD  59171.140
18.69± 0.07bAM33-013317.22 in filter B on MJD  59171.140
M33-013317.22 in filter B on MJD  59171.140
M33-013317.22 in filter B on MJD  59171.140
17.78± 0.05bM33-013317.22 in filter R on MJD  59171.140
17.09± 0.08AbM33-013317.22 in filter I on MJD  59171.140
M33-013317.22 in filter I on MJD  59171.140
M33-013317.22 in filter I on MJD  59171.140
59227.13 18.46± 0.05AbM33-013317.22 in filter V on MJD  59227.130
M33-013317.22 in filter V on MJD  59227.130
M33-013317.22 in filter V on MJD  59227.130
18.73± 0.06AbM33-013317.22 in filter B on MJD  59227.130
M33-013317.22 in filter B on MJD  59227.130
M33-013317.22 in filter B on MJD  59227.130
17.83± 0.05AbM33-013317.22 in filter R on MJD  59227.130
M33-013317.22 in filter R on MJD  59227.130
17.04± 0.08bM33-013317.22 in filter I on MJD  59227.130
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 M33-013317.22Plot of color for M33-013317.22

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 [0.37 mag]R [0.30 mag]
B [0.45 mag]0.00 (22)
R [0.30 mag]0.16 (25)0.05 (16)
I [0.23 mag]0.05 (14)0.02 (7)0.02 (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 M33-013317.22

Plot to assess correlation between bands for M33-013317.22

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)
0.11 | 1.29
R
(I|R)
0.53 | 1.090.47 | 0.07
I
(I|R)
0.19 | 1.65-0.25 | 3.950.09 | 1.57

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