Object: NGC814 On scan num: 84 86 88 90 92 94 Off scan num: 85 87 89 91 93 95 R.A.: 2.177144 hrs Dec.: -15.773206 deg On azimuth: 147.138885 deg On zenith dist.: 60.715938 deg Off azimuth: 147.101617 deg Off zenith dist.: 60.732210 deg MJD: 52511 UTC: 0.302859 Center freq.: 1412.888308 MHz Doppler: 0.00006936 Num. correlators: 2 Spectrom. atten.: 35 42 dB Bandwidth: 10.0 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: 0.032 Jy Lower 20% velocity: 1492.9 km/s Upper 20% velocity: 1683.9 km/s Systemic velocity: 1588.4 km/s Line width (20%): 191.0 km/s Profile integral: 4.44 Jy * km/s A: 4.28 B: 5.26 Ratio B/A: 1.230 Flux integral velocity range: 1470.1 - 1699.2 km/s