Object: U00809 On scan num: 155 157 159 161 163 165 Off scan num: 156 158 160 162 164 166 R.A.: 1.264450 hrs Dec.: 33.810199 deg On azimuth: 287.911296 deg On zenith dist.: 54.509564 deg Off azimuth: 287.890235 deg Off zenith dist.: 54.474984 deg MJD: 52286 UTC: 0.154861 Center freq.: 1400.606114 MHz Doppler: -0.00009217 Num. correlators: 2 Spectrom. atten.: 34 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. Narrow band interference was removed from 5 channels by interpolation between the nearest valid channels
Peak intensity: 0.022 Jy Lower 20% velocity: 4038.6 km/s Upper 20% velocity: 4374.2 km/s Systemic velocity: 4206.4 km/s Line width (20%): 335.6 km/s Profile integral: 5.79 Jy * km/s A: 4.62 B: 5.71 Ratio B/A: 1.236 Flux integral velocity range: 4017.6 - 4397.0 km/s