Object: 1457-00 On scan num: 59 61 63 65 67 69 Off scan num: 60 62 64 66 68 70 R.A.: 14.999626 hrs Dec.: -1.114604 deg On azimuth: 210.428694 deg On zenith dist.: 43.749722 deg Off azimuth: 210.389620 deg Off zenith dist.: 43.737755 deg MJD: 52422 UTC: 0.220058 Center freq.: 1411.402385 MHz Doppler: -0.00003778 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 3 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: 0.020 Jy Lower 20% velocity: 1854.9 km/s Upper 20% velocity: 1948.0 km/s Systemic velocity: 1901.4 km/s Line width (20%): 93.1 km/s Profile integral: 1.42 Jy * km/s A: 1.26 B: 1.36 Ratio B/A: 1.074 Flux integral velocity range: 1844.7 - 1976.2 km/s