Object: LVM142. On scan num: 81 83 85 87 89 91 Off scan num: 82 84 86 88 90 92 R.A.: 4.438617 hrs Dec.: 86.195424 deg On azimuth: 355.733680 deg On zenith dist.: 49.527259 deg Off azimuth: 355.737036 deg Off zenith dist.: 49.522028 deg MJD: 52285 UTC: 0.260023 Center freq.: 1384.320412 MHz Doppler: -0.00001872 Num. correlators: 2 Spectrom. atten.: 33 38 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. Narrow band interference was removed from 4 channels by interpolation between the nearest valid channels
Peak intensity: 0.006 Jy Lower 20% velocity: 7736.8 km/s Upper 20% velocity: 7906.8 km/s Systemic velocity: 7821.8 km/s Line width (20%): 170.0 km/s Profile integral: 0.78 Jy * km/s A: 0.60 B: 0.90 Ratio B/A: 1.498 Flux integral velocity range: 7726.7 - 7917.7 km/s