VLA calibrator information for 2007+4029

This page summarizes the information for 2007+4029 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
 ===================================================================
 2007+404   J2000  B 20h07m44.944851s  40d29'48.604140"  Aug01         
 2005+403   B1950  B 20h05m59.558900s  40d21'01.802000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  P P S X       3.70            5
   6cm    C  P P P P       4.50
 3.7cm    X  P P P P       2.85
   2cm    U  S S S S       2.3
 0.7cm    Q  S S S S       1.1

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)
201708212.555J2007+4029
201709032.516J2007+4029
201710242.532J2007+4029
201711072.534J2007+4029
201711212.583J2007+4029
201712032.602J2007+4029
201907292.593J2007+4029
201910182.560J2007+4029
201910192.526J2007+4029
202107172.653J2007+4029
S-band data (filled triangles)
201708142.438J2007+4029
201708212.473J2007+4029
201709032.473J2007+4029
201710032.519J2007+4029
201710242.507J2007+4029
201711072.493J2007+4029
201711212.505J2007+4029
201712032.510J2007+4029
201910182.323J2007+4029
201910192.295J2007+4029
C-band data (open squares)
201708211.980J2007+4029
201709031.933J2007+4029
201710242.117J2007+4029
201711072.078J2007+4029
201711212.090J2007+4029
201712032.095J2007+4029
201712171.936J2007+4029
201904011.933J2007+4029
201904221.906J2007+4029
201904221.903J2007+4029
201909021.934J2007+4029
201910182.092J2007+4029
201910192.085J2007+4029
202206132.743J2007+4029
X-band data (X-crosses)
201709031.658J2007+4029
201710241.692J2007+4029
201711071.636J2007+4029
201711211.692J2007+4029
201712031.724J2007+4029
201802101.529J2007+4029
201904011.754J2007+4029
202208042.864J2007+4029
U-band data (filled squares)
201904011.542J2007+4029
202204132.498J2007+4029
K-band data (open circles)
201710181.070J2007+4029
201904221.392J2007+4029
201904221.340J2007+4029
A-band data (6-pointed stars)
201710180.825J2007+4029
Q-band data (filled circles)
201705290.797J2007+4029
201710180.682J2007+4029
201801280.713J2007+4029
202211111.640J2007+4029