Object: 1457-00 On scan num: 220 222 224 226 228 Off scan num: 221 223 225 227 229 R.A.: 14.999624 hrs Dec.: -1.114588 deg On azimuth: 184.527376 deg On zenith dist.: 39.545104 deg Off azimuth: 184.487779 deg Off zenith dist.: 39.543348 deg MJD: 52379 UTC: 0.288542 Center freq.: 1411.498766 MHz Doppler: 0.00003051 Num. correlators: 2 Spectrom. atten.: 38 39 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1440 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: 0.020 Jy Lower 20% velocity: 1853.2 km/s Upper 20% velocity: 1955.9 km/s Systemic velocity: 1904.5 km/s Line width (20%): 102.8 km/s Profile integral: 1.38 Jy * km/s A: 1.19 B: 1.51 Ratio B/A: 1.271 Flux integral velocity range: 1834.2 - 1971.9 km/s