Object: U5316o On scan num: 125 Off scan num: 126 R.A.: 9.928016 hrs Dec.: 72.203670 deg On azimuth: 18.623868 deg On zenith dist.: 39.516802 deg Off azimuth: 19.460724 deg Off zenith dist.: 40.343625 deg MJD: 52233 UTC: 0.352465 Center freq.: 1415.476810 MHz Doppler: 0.00005005 Num. correlators: 2 Spectrom. atten.: 37 43 dB Bandwidth: 5.0 MHz Num. channels: 1024 Eff. integration: 240 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 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 1.
Peak intensity: 0.499 Jy Lower 20% velocity: 943.5 km/s Upper 20% velocity: 1173.6 km/s Systemic velocity: 1058.6 km/s Line width (20%): 230.1 km/s Profile integral: 88.44 Jy * km/s A: 70.24 B: 84.14 Ratio B/A: 1.198 Flux integral velocity range: 913.7 - 1195.0 km/s