Object: U-00866 On scan num: 2378 2380 2382 2384 2386 2388 Off scan num: 2379 2381 2383 2385 2387 2389 R.A.: 1.336017 hrs Dec.: -0.204640 deg On azimuth: 212.697485 deg On zenith dist.: 43.438267 deg Off azimuth: 212.669112 deg Off zenith dist.: 43.429222 deg MJD: 52255 UTC: 0.111852 Center freq.: 1412.070049 MHz Doppler: -0.00008869 Num. correlators: 2 Spectrom. atten.: 34 41 dB Bandwidth: 5.0 MHz Num. channels: 1024 Eff. integration: 1560 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 7 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: 0.029 Jy Lower 20% velocity: 1669.2 km/s Upper 20% velocity: 1809.5 km/s Systemic velocity: 1739.4 km/s Line width (20%): 140.2 km/s Profile integral: 3.36 Jy * km/s A: 2.47 B: 3.07 Ratio B/A: 1.242 Flux integral velocity range: 1658.7 - 1818.3 km/s