Object: N-3629 On scan num: 14 16 18 20 22 24 Off scan num: 15 17 19 21 23 25 R.A.: 11.342153 hrs Dec.: 26.963017 deg On azimuth: 190.319387 deg On zenith dist.: 11.611264 deg Off azimuth: 190.445487 deg Off zenith dist.: 11.615378 deg MJD: 52482 UTC: 0.851042 Center freq.: 1413.203731 MHz Doppler: -0.00005252 Num. correlators: 2 Spectrom. atten.: 35 42 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1500 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 10 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: 0.119 Jy Lower 20% velocity: 1394.9 km/s Upper 20% velocity: 1623.1 km/s Systemic velocity: 1509.0 km/s Line width (20%): 228.2 km/s Profile integral: 23.16 Jy * km/s A: 21.00 B: 22.96 Ratio B/A: 1.093 Flux integral velocity range: 1366.4 - 1664.2 km/s