Object: N7723 On scan num: 611 613 615 617 619 621 623 625 Off scan num: 612 614 616 618 620 622 624 626 R.A.: 23.649068 hrs Dec.: -12.959699 deg On azimuth: 191.665863 deg On zenith dist.: 52.029063 deg Off azimuth: 191.624917 deg Off zenith dist.: 52.023671 deg MJD: 52523 UTC: 0.272870 Center freq.: 1411.660901 MHz Doppler: 0.00000946 Num. correlators: 2 Spectrom. atten.: 35 39 dB Bandwidth: 5.0 MHz Num. channels: 1024 Eff. integration: 2040 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 12 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: 0.050 Jy Lower 20% velocity: 1693.1 km/s Upper 20% velocity: 2024.7 km/s Systemic velocity: 1858.9 km/s Line width (20%): 331.7 km/s Profile integral: 8.54 Jy * km/s A: 7.86 B: 8.59 Ratio B/A: 1.093 Flux integral velocity range: 1678.5 - 2041.6 km/s