Color composite thumbnail image of V-104958V-104958 (J013359.37+302310.9)



Target Notes

Color composite thumbnail image of V-104958

Classification: YSG

Unresolved from three LGGS stars combined to be about one magnitude fainter 1 arcsecond E.

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 16.96± 0.05BV-104958 in filter V on MJD  56140.400
---- 16.83± 0.07BV-104958 in filter R on MJD  56140.400
----
56599.22 16.82± 0.06BV-104958 in filter V on MJD  56599.220
16.83± 0.04BV-104958 in filter B on MJD  56599.220
16.69± 0.05BV-104958 in filter R on MJD  56599.220
----
56982.22 16.95± 0.06BV-104958 in filter V on MJD  56982.220
16.91± 0.06BV-104958 in filter B on MJD  56982.220
16.83± 0.07BV-104958 in filter R on MJD  56982.220
----
57310.16 16.92± 0.05BV-104958 in filter V on MJD  57310.160
16.92± 0.04BV-104958 in filter B on MJD  57310.160
16.71± 0.05BV-104958 in filter R on MJD  57310.160
----
57328.19 16.99± 0.05BV-104958 in filter V on MJD  57328.190
16.95± 0.07BV-104958 in filter B on MJD  57328.190
16.83± 0.07BV-104958 in filter R on MJD  57328.190
----
57634.41 17.09± 0.07BV-104958 in filter V on MJD  57634.410
17.08± 0.08BV-104958 in filter B on MJD  57634.410
16.93± 0.07BV-104958 in filter R on MJD  57634.410
----
57638.43 17.07± 0.06BV-104958 in filter V on MJD  57638.430
-------- 16.84± 0.10BV-104958 in filter I on MJD  57638.430
57964.33 16.98± 0.04BV-104958 in filter V on MJD  57964.330
16.99± 0.07BV-104958 in filter B on MJD  57964.330
16.87± 0.05BV-104958 in filter R on MJD  57964.330
16.74± 0.06BV-104958 in filter I on MJD  57964.330
57988.43 17.00± 0.06TBV-104958 in filter V on MJD  57988.430
------------
58043.16 16.95± 0.04BV-104958 in filter V on MJD  58043.160
16.95± 0.06BV-104958 in filter B on MJD  58043.160
16.78± 0.05BV-104958 in filter R on MJD  58043.160
16.65± 0.09BV-104958 in filter I on MJD  58043.160
58108.17 16.89± 0.05BV-104958 in filter V on MJD  58108.170
16.90± 0.06BV-104958 in filter B on MJD  58108.170
---- 16.63± 0.09BV-104958 in filter I on MJD  58108.170
58317.37 16.99± 0.04BV-104958 in filter V on MJD  58317.370
17.02± 0.06BV-104958 in filter B on MJD  58317.370
16.86± 0.04BV-104958 in filter R on MJD  58317.370
----
58339.40 16.98± 0.05BV-104958 in filter V on MJD  58339.400
17.00± 0.06BV-104958 in filter B on MJD  58339.400
16.84± 0.06BV-104958 in filter R on MJD  58339.400
----
58375.16 17.01± 0.05BV-104958 in filter V on MJD  58375.160
-------- 16.74± 0.09BV-104958 in filter I on MJD  58375.160
58696.41 17.07± 0.05BV-104958 in filter V on MJD  58696.410
17.09± 0.07BV-104958 in filter B on MJD  58696.410
16.93± 0.07BV-104958 in filter R on MJD  58696.410
----
58757.17 17.00± 0.05BV-104958 in filter V on MJD  58757.170
---- 16.85± 0.05BV-104958 in filter R on MJD  58757.170
----
58784.15 17.03± 0.05BV-104958 in filter V on MJD  58784.150
-------- 16.75± 0.08BV-104958 in filter I on MJD  58784.150
59081.36 16.95± 0.05BV-104958 in filter V on MJD  59081.360
16.94± 0.05BV-104958 in filter B on MJD  59081.360
16.80± 0.05BV-104958 in filter R on MJD  59081.360
16.58± 0.07BV-104958 in filter I on MJD  59081.360
59084.38-------- 16.84± 0.07TBV-104958 in filter R on MJD  59084.380
----
59171.17 16.92± 0.04BV-104958 in filter V on MJD  59171.170
16.88± 0.09BV-104958 in filter B on MJD  59171.170
16.77± 0.05BV-104958 in filter R on MJD  59171.170
16.66± 0.08BV-104958 in filter I on MJD  59171.170
59227.15 16.96± 0.05BV-104958 in filter V on MJD  59227.150
16.93± 0.06BV-104958 in filter B on MJD  59227.150
16.80± 0.05BV-104958 in filter R on MJD  59227.150
16.67± 0.07BV-104958 in filter I on MJD  59227.150
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-104958Plot of color for V-104958

Key for Plot Variability Photometry Table Target Notes


Variability

Plot/Graph Photometry Table Target Notes

It is very 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 [0.26 mag]B [0.27 mag]R [0.25 mag]
B [0.26 mag]0.88 (14)
R [0.25 mag]0.88 (15)0.82 (13)
I [0.25 mag]0.75 (9)0.25 (6)0.48 (5)

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-104958

Plot to assess correlation between bands for V-104958

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)
1.35 | 1.03
R
(I|R)
1.21 | 0.841.28 | 0.36
I
(I|R)
0.76 | 1.080.23 | 0.850.41 | 0.93

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