Object: 2202+4205 On scan num: 788 790 792 794 796 798 800 802 804 806 808 810 Off scan num: 789 791 793 795 797 799 801 803 805 807 809 811 R.A.: 22.076698 hrs Dec.: 42.327295 deg On azimuth: 296.799825 deg On zenith dist.: 49.130517 deg Off azimuth: 296.783851 deg Off zenith dist.: 49.095093 deg MJD: 52504 UTC: 0.416447 Center freq.: 1400.256695 MHz Doppler: 0.00002996 Num. correlators: 2 Spectrom. atten.: 37 37 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 3420 seconds
This spectrum is the integration of all data for the scan with spectra from both polarizations added together. The spectral intensities are Ssys * (on - off) / off, where Ssys is the system temperature in Jy. The system noise flux density equivalent is calibrated for each scan with a calibration noise source firing during each scan. The cal value, in Jy, is calibrated by comparison with a number of continuum sources as described in the summary web page
This spectrum is the same as Figure 1 but with 6 60-second sub-integrations manually deleted because of interference or a bad baseline.
This is the section of spectrum measured to obtain the parameters listed below. The three horizontal dotted lines are the baseline, the peak level selected, and 20% of the peak level. The two vertical dotted lines mark the selected 20% line width edges. The solid horizontal line marks the velocity range chosen for the the line profile flux density integral. This spectrum has a second-order least squares fit baseline removed using most of the baseline shown in Figure 2.
Peak intensity: 0.007 Jy Lower 20% velocity: 4121.1 km/s Upper 20% velocity: 4363.7 km/s Systemic velocity: 4242.4 km/s Line width (20%): 242.7 km/s Profile integral: 1.08 Jy * km/s A: 1.39 B: 0.92 Ratio B/A: 0.660 Flux integral velocity range: 4110.9 - 4382.3 km/s