Object: LVM446. On scan num: 80 82 84 Off scan num: 81 83 85 R.A.: 10.873915 hrs Dec.: 59.687090 deg On azimuth: 7.880576 deg On zenith dist.: 21.484654 deg Off azimuth: 7.913988 deg Off zenith dist.: 21.487227 deg MJD: 52287 UTC: 0.344259 Center freq.: 1381.651832 MHz Doppler: 0.00002633 Num. correlators: 2 Spectrom. atten.: 32 40 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 780 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 4 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: 0.007 Jy Lower 20% velocity: 8151.7 km/s Upper 20% velocity: 8480.6 km/s Systemic velocity: 8316.2 km/s Line width (20%): 328.9 km/s Profile integral: 2.04 Jy * km/s A: 1.57 B: 2.07 Ratio B/A: 1.316 Flux integral velocity range: 8138.2 - 8488.7 km/s