VLA calibrator information for 0741+3112

This page summarizes the information for 0741+3112 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
 ===================================================================
 0741+312   J2000  A 07h41m10.703308s  31d12'00.228620"  Aug01         
 0738+313   B1950  A 07h38m00.178600s  31d19'02.059000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  P P P P       2.0
   6cm    C  P P P P       1.6
 3.7cm    X  P P P P       2.1
   2cm    U  P P P P       1.0
 0.7cm    Q  S S S S       1.4

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)
201706222.3220741+312
201708052.243J0741+3112
201708072.229J0741+3112
201708122.180J0741+3112
201803192.236J0741+3112
201903032.097J0741+3112
201903192.108J0741+3112
201905062.056J0741+3112
201905212.037J0741+3112
201908041.918J0741+3112
201908132.143J0741+3112
201908252.125J0741+3112
201910052.079J0741+3112
S-band data (filled triangles)
201706222.4060741+312
201905212.213J0741+3112
C-band data (open squares)
201902162.163J0741+3112
201909012.194J0741+3112
202102042.283J0741+3112
202206252.384J0741+3112
202206282.368J0741+3112
X-band data (X-crosses)
201802101.883J0741+3112
201802192.131J0741+3112
201908141.785J0741+3112
201909071.859J0741+3112
202109042.370J0741+3112
202110102.270J0741+3112
202208072.467J0741+3112
U-band data (filled squares)
202103071.737J0741+3112
202205122.118J0741+3112
K-band data (open circles)
201811261.417J0741+3112