Object: N7723 On scan num: 17 19 21 23 25 27 29 31 33 35 37 39 Off scan num: 18 20 22 24 26 28 30 32 34 36 38 40 R.A.: 23.649067 hrs Dec.: -12.959672 deg On azimuth: 158.610481 deg On zenith dist.: 53.849293 deg Off azimuth: 158.571834 deg Off zenith dist.: 53.858817 deg MJD: 52747 UTC: 0.583611 Center freq.: 1411.731241 MHz Doppler: 0.00005926 Num. correlators: 2 Spectrom. atten.: 28 40 dB Bandwidth: 5.0 MHz Num. channels: 1024 Eff. integration: 3240 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: 1693.0 km/s Upper 20% velocity: 2025.6 km/s Systemic velocity: 1859.3 km/s Line width (20%): 332.6 km/s Profile integral: 8.33 Jy * km/s A: 7.92 B: 8.08 Ratio B/A: 1.021 Flux integral velocity range: 1678.5 - 2053.0 km/s