Object: U01120 On scan num: 825 827 829 831 833 835 Off scan num: 826 828 830 832 834 836 R.A.: 1.567069 hrs Dec.: -1.077443 deg On azimuth: 165.815822 deg On zenith dist.: 40.291792 deg Off azimuth: 165.777607 deg Off zenith dist.: 40.296739 deg MJD: 52496 UTC: 0.374850 Center freq.: 1398.997112 MHz Doppler: 0.00008643 Num. correlators: 2 Spectrom. atten.: 35 42 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1680 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 4 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: 0.030 Jy Lower 20% velocity: 4461.6 km/s Upper 20% velocity: 4873.5 km/s Systemic velocity: 4667.5 km/s Line width (20%): 411.9 km/s Profile integral: 7.93 Jy * km/s A: 7.09 B: 8.45 Ratio B/A: 1.192 Flux integral velocity range: 4435.2 - 4902.8 km/s