VLA calibrator information for 1416+3444

This page summarizes the information for 1416+3444 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
 ===================================================================
 1416+347   J2000  A 14h16m04.186239s  34d44'36.427560"  Aug01         
 1413+349   B1950  A 14h13m56.264900s  34d58'29.456000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  P P S X       1.90            4
   6cm    C  P P P P       1.00
 3.7cm    X  P P P P       0.66                   
   2cm    U  S S S S       0.40
 0.7cm    Q  W W W W       0.24

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)
201903011.902J1416+3444
201905181.902J1416+3444
201906011.927J1416+3444
201906021.926J1416+3444
201906031.941J1416+3444
201906041.939J1416+3444
201909141.935J1416+3444
201909152.085J1416+3444
201909151.910J1416+3444
201909281.892J1416+3444
201910111.922J1416+3444
S-band data (filled triangles)
201705281.493J1416+3444
201711111.441J1416+3444
201910111.441J1416+3444
C-band data (open squares)
201804130.954J1416+3444
201908270.922J1416+3444
202107150.938J1416+3444
202206100.891J1416+3444
X-band data (X-crosses)
201802130.663J1416+3444
202103200.639J1416+3444
202205280.636J1416+3444
202207290.646J1416+3444
U-band data (filled squares)
201811170.518J1416+3444
202204210.513J1416+3444