Object: 02208+4744 On scan num: 35 37 39 Off scan num: 36 38 40 R.A.: 2.402202 hrs Dec.: 47.969841 deg On azimuth: 310.871531 deg On zenith dist.: 62.180986 deg Off azimuth: 310.851844 deg Off zenith dist.: 62.148564 deg MJD: 52599 UTC: 0.402002 Center freq.: 1398.557693 MHz Doppler: -0.00001420 Num. correlators: 2 Spectrom. atten.: 38 37 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 840 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: 0.027 Jy Lower 20% velocity: 4507.6 km/s Upper 20% velocity: 4793.7 km/s Systemic velocity: 4650.6 km/s Line width (20%): 286.1 km/s Profile integral: 5.07 Jy * km/s A: 4.63 B: 5.16 Ratio B/A: 1.114 Flux integral velocity range: 4475.1 - 4825.8 km/s