VLA calibrator information for 0449+1121

This page summarizes the information for 0449+1121 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
 ===================================================================
 0449+113   J2000  A 04h49m07.671119s  11d21'28.596620"  Aug01         
 0446+112   B1950  A 04h46m21.217300s  11d16'17.846000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  S X X X       0.80           40
   6cm    C  S S S S       0.96
 3.7cm    X  P P P P       1.08
   2cm    U  P P P P       1.1
 0.7cm    Q  S S S S       0.9

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
S-band data (filled triangles)
202206240.553J0449+1121
C-band data (open squares)
202205270.642J0449+1121
X-band data (X-crosses)
201709040.750J0449+1121
201802250.695J0449+1121
201802250.696J0449+1121
201903010.683J0449+1121
201903060.663J0449+1121
201903140.641J0449+1121
201903140.628J0449+1121
201903150.618J0449+1121
201903200.647J0449+1121
201903210.624J0449+1121
201903250.630J0449+1121
201903260.624J0449+1121
201903270.616J0449+1121
201903290.616J0449+1121
201904020.644J0449+1121
201904070.619J0449+1121
201904130.594J0449+1121
201904200.609J0449+1121
201904260.565J0449+1121
201905030.474J0449+1121
201905080.592J0449+1121
201905170.560J0449+1121
201905170.570J0449+1121
201905240.555J0449+1121
201905310.622J0449+1121
201906040.536J0449+1121
201906110.601J0449+1121
201906200.547J0449+1121
201908060.527J0449+1121
201909080.534J0449+1121
201909120.573J0449+1121
201909230.523J0449+1121
202012200.642J0449+1121
202205190.665J0449+1121
U-band data (filled squares)
201811290.726J0449+1121
A-band data (6-pointed stars)
202010060.710J0449+1121
202010180.726J0449+1121