Object: CIG454 On scan num: 112 114 116 118 120 122 Off scan num: 113 115 117 119 121 123 R.A.: 11.021415 hrs Dec.: 67.106259 deg On azimuth: 29.759202 deg On zenith dist.: 46.673008 deg Off azimuth: 29.760512 deg Off zenith dist.: 46.697274 deg MJD: 52769 UTC: 0.855463 Center freq.: 1393.230995 MHz Doppler: -0.00005698 Num. correlators: 2 Spectrom. atten.: 27 40 dB Bandwidth: 40.0 MHz Num. channels: 1024 Eff. integration: 1680 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: 0.013 Jy Lower 20% velocity: 9771.8 km/s Upper 20% velocity: 9975.1 km/s Systemic velocity: 9873.5 km/s Line width (20%): 203.3 km/s Profile integral: 1.95 Jy * km/s A: 1.72 B: 2.04 Ratio B/A: 1.191 Flux integral velocity range: 9735.8 - 9999.7 km/s