Object: LVM849. On scan num: 4087 4089 4091 4093 4095 4097 Off scan num: 4088 4090 4092 4094 4096 4098 R.A.: 18.253331 hrs Dec.: 61.666794 deg On azimuth: 329.801546 deg On zenith dist.: 64.069475 deg Off azimuth: 329.783236 deg Off zenith dist.: 64.044457 deg MJD: 52526 UTC: 0.311979 Center freq.: 1383.022377 MHz Doppler: -0.00000799 Num. correlators: 2 Spectrom. atten.: 35 42 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.
Peak intensity: 0.005 Jy Lower 20% velocity: 7925.3 km/s Upper 20% velocity: 8326.6 km/s Systemic velocity: 8125.9 km/s Line width (20%): 401.4 km/s Profile integral: 0.97 Jy * km/s A: 1.26 B: 0.97 Ratio B/A: 0.767 Flux integral velocity range: 7907.7 - 8353.5 km/s
very weak profile