Object: U11527 On scan num: 2205 2207 2209 2211 2213 2215 Off scan num: 2206 2208 2210 2212 2214 2216 R.A.: 20.231896 hrs Dec.: -1.156930 deg On azimuth: 230.000554 deg On zenith dist.: 52.337804 deg Off azimuth: 229.966566 deg Off zenith dist.: 52.317325 deg MJD: 52253 UTC: 0.945567 Center freq.: 1394.796669 MHz Doppler: -0.00006989 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 2 channels by interpolation between the nearest valid channels
Peak intensity: 0.025 Jy Lower 20% velocity: 5237.9 km/s Upper 20% velocity: 5731.3 km/s Systemic velocity: 5484.6 km/s Line width (20%): 493.4 km/s Profile integral: 7.96 Jy * km/s A: 6.06 B: 8.03 Ratio B/A: 1.326 Flux integral velocity range: 5216.4 - 5755.1 km/s