Object: N5936 On scan num: 743 745 747 Off scan num: 744 746 748 R.A.: 15.500224 hrs Dec.: 12.989046 deg On azimuth: 112.464661 deg On zenith dist.: 45.151182 deg Off azimuth: 112.433566 deg Off zenith dist.: 45.175318 deg MJD: 52262 UTC: 0.503426 Center freq.: 1401.449375 MHz Doppler: 0.00005834 Num. correlators: 2 Spectrom. atten.: 34 40 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 720 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. Narrow band interference was removed from 3 channels by interpolation between the nearest valid channels
Peak intensity: 0.030 Jy Lower 20% velocity: 3899.7 km/s Upper 20% velocity: 4129.7 km/s Systemic velocity: 4014.7 km/s Line width (20%): 230.0 km/s Profile integral: 5.48 Jy * km/s A: 4.15 B: 5.61 Ratio B/A: 1.351 Flux integral velocity range: 3875.8 - 4174.2 km/s
high velocity wing very poorly defined at 20 percent level