Object: LVM266. On scan num: 1044 1046 Off scan num: 1045 1047 R.A.: 8.639777 hrs Dec.: 69.016660 deg On azimuth: 337.619718 deg On zenith dist.: 37.229214 deg Off azimuth: 337.639788 deg Off zenith dist.: 37.210468 deg MJD: 52284 UTC: 0.386632 Center freq.: 1389.509570 MHz Doppler: 0.00000003 Num. correlators: 2 Spectrom. atten.: 33 38 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 540 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.
Peak intensity: 0.017 Jy Lower 20% velocity: 6475.9 km/s Upper 20% velocity: 6814.4 km/s Systemic velocity: 6645.2 km/s Line width (20%): 338.5 km/s Profile integral: 3.81 Jy * km/s A: 3.24 B: 3.61 Ratio B/A: 1.114 Flux integral velocity range: 6459.4 - 6827.6 km/s