Object: ESO317-G023 On scan num: 74 76 78 80 82 84 Off scan num: 75 77 79 81 83 85 R.A.: 10.411808 hrs Dec.: -39.305634 deg On azimuth: 160.798622 deg On zenith dist.: 80.865612 deg Off azimuth: 160.764367 deg Off zenith dist.: 80.877663 deg MJD: 52639 UTC: 0.308472 Center freq.: 1406.933513 MHz Doppler: 0.00007035 Num. correlators: 2 Spectrom. atten.: 38 33 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.
Peak intensity: 0.008 Jy Lower 20% velocity: 2561.8 km/s Upper 20% velocity: 2940.6 km/s Systemic velocity: 2751.2 km/s Line width (20%): 378.8 km/s Profile integral: 2.41 Jy * km/s A: 2.45 B: 1.94 Ratio B/A: 0.794 Flux integral velocity range: 2541.4 - 2959.0 km/s