Object: N00551 On scan num: 835 837 839 841 843 845 Off scan num: 836 838 840 842 844 846 R.A.: 1.554289 hrs Dec.: 37.182284 deg On azimuth: 295.371728 deg On zenith dist.: 59.438581 deg Off azimuth: 296.013674 deg Off zenith dist.: 60.500960 deg MJD: 52504 UTC: 0.602338 Center freq.: 1396.352378 MHz Doppler: 0.00008227 Num. correlators: 2 Spectrom. atten.: 37 40 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1740 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 2 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: 0.024 Jy Lower 20% velocity: 4991.8 km/s Upper 20% velocity: 5384.2 km/s Systemic velocity: 5188.0 km/s Line width (20%): 392.4 km/s Profile integral: 6.05 Jy * km/s A: 5.06 B: 5.74 Ratio B/A: 1.134 Flux integral velocity range: 4971.5 - 5402.3 km/s