Object: 14+13-2 On scan num: 148 150 152 154 156 158 Off scan num: 149 151 153 155 157 159 R.A.: 23.440979 hrs Dec.: -32.388436 deg On azimuth: 159.609509 deg On zenith dist.: 73.945150 deg Off azimuth: 159.571299 deg Off zenith dist.: 73.957654 deg MJD: 52435 UTC: 0.413669 Center freq.: 1418.636323 MHz Doppler: 0.00008683 Num. correlators: 2 Spectrom. atten.: 35 35 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1800 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 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 1.
Peak intensity: 0.250 Jy Lower 20% velocity: 46.1 km/s Upper 20% velocity: 82.0 km/s Systemic velocity: 64.1 km/s Line width (20%): 35.9 km/s Profile integral: 5.86 Jy * km/s A: 5.39 B: 5.91 Ratio B/A: 1.096 Flux integral velocity range: 32.6 - 98.6 km/s