VLA calibrator information for 1513+2338

This page summarizes the information for 1513+2338 as found in the original VLA calibrator list and, if found there, a link to search the NRAO VLA Archive Survey (NVAS) for calibrator data before 2010. Furthermore, a table with the most recent approximate flux densities, starting from 2017 as mined from the VLA CASA pipeline is presented.

If shown at the top, we have recovered the original, pre-WIDAR ANTSOL flux density solutions from the period roughly 2000-2007; symbols as explained next.
The mined data are plotted (gray, on the left hand side) as function of (log) frequency on the top and as function of time on the bottom. The frequency band symbols in the bottom panel follow the symbols as outlined in the top panel:

4-band  (~75 MHz) horizontal stripe       X-band (~10.0 GHz) cross
P-band (~350 MHz) open triangle        U/Ku-band (~15.0 GHz) filled square
L-band (~1.5 GHz) VLA-Y shape             K-band (~22.2 GHz) open circle
S-band (~3.0 GHz) filled triangle      A/Ka-band (~33.2 GHz) 6-pointed star
C-band (~6.0 GHz) open square             Q-band (~45.0 GHz) filled circle
Assume a 10% flux density error on each point, up to 30% for the higher frequency data points. The dashed lines in the frequency plot indicate the approximate spectral index in the frequency band (tied to the measured flux density).
Depending on the spectral behavior, different receiver observing bands (as indicated with the log-frequency axis) may have very different typical flux densities. Note that there can be significant flux density changes for different array configurations, which start date is indicated at the top of the time-line figure. Calendar years are separated by vertical dotted lines.
If shown, a curve depicts a fit to the (unweighted) average data for each band (if there are more than two bands with measured flux densities). The fit equation is listed at the top where the x-coordinate represents the base-10 log of the frequency (GHz) and the y-coordinate represents the base-10 log of the flux density (mJy/bm). The fit may use more data than shown and is using data with different time stamps, which means typically different flux densitities in a single band for genuine variable sources (and/or observed in different array configurations).
Depending on the variability of the source, array configuration and the quality of the data, this fit may, or may not, be representative for the data!

(Click on the figure for a larger view in a new tab/window)

 Original (outdated) VLA calibrator list information: 
 IAU NAME EQUINOX  PC RA(hh,mm,ss)    DEC(ddd,mm,ss)   POS.REF ALT.NAME
 ===================================================================
 1513+236   J2000  A 15h13m40.185630s  23d38'35.200460"  Aug01         
 1511+238   B1950  A 15h11m28.285800s  23d49'43.765000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  P P P S       1.60          1.5
   6cm    C  P P P P       0.80
 3.7cm    X  P P P P       0.52
   2cm    U  S S S S          ?
 0.7cm    Q  W W W W       0.12

Default NVAS search around this position (in new tab/window)

Results from CASA pipeline flux density mining:
Observing date (UT)Flux density (Jy/bm)Source name used
L-band data ("VLA Y-arm" symbols)
201809281.657J1513+2338
201810091.688J1513+2338
201812021.657J1513+2338
201904281.669J1513+2338
201905021.665J1513+2338
201905141.656J1513+2338
201906231.689J1513+2338
201910201.667J1513+2338
202201121.676J1513+2338
S-band data (filled triangles)
201710021.092J1513+2338
201710201.086J1513+2338
201711121.079J1513+2338
201711171.079J1513+2338
201812021.075J1513+2338
201812051.089J1513+2338
201904281.095J1513+2338
201905021.094J1513+2338
201906231.113J1513+2338
201908051.092J1513+2338
201908091.091J1513+2338
201908151.091J1513+2338
201909101.084J1513+2338
201910201.089J1513+2338
202008071.104J1513+2338
202009061.088J1513+2338
C-band data (open squares)
201711200.671J1513+2338
201712060.667J1513+2338
201712210.668J1513+2338
201803280.677J1513+2338
201811180.673J1513+2338
201811300.690J1513+2338
201903030.674J1513+2338
201903040.674J1513+2338
201903090.672J1513+2338
201905140.672J1513+2338
201908170.661J1513+2338
201909280.643J1513+2338
201909290.639J1513+2338
201910200.685J1513+2338
202108150.681J1513+2338
202110300.682J1513+2338
202206140.664J1513+2338
202207280.679J1513+2338
X-band data (X-crosses)
201903120.458J1513+2338
201903190.464J1513+2338
201908030.455J1513+2338
201908050.454J1513+2338
201908090.458J1513+2338
201908130.449J1513+2338
201910200.468J1513+2338
202010060.452J1513+2338
202102230.452J1513+2338
202102230.453J1513+2338
202104070.455J1513+2338
202104140.463J1513+2338
202108140.465J1513+2338
202207280.464J1513+2338