Object: 17+06-4 On scan num: 232 234 236 238 240 242 Off scan num: 233 235 237 239 241 243 R.A.: 2.448127 hrs Dec.: 33.425541 deg On azimuth: 113.845290 deg On zenith dist.: 10.806340 deg Off azimuth: 113.835783 deg Off zenith dist.: 10.809622 deg MJD: 52512 UTC: 0.360174 Center freq.: 1418.639476 MHz Doppler: 0.00008905 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 3 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: 0.153 Jy Lower 20% velocity: 488.0 km/s Upper 20% velocity: 621.6 km/s Systemic velocity: 554.8 km/s Line width (20%): 133.7 km/s Profile integral: 12.38 Jy * km/s A: 11.14 B: 12.48 Ratio B/A: 1.120 Flux integral velocity range: 426.8 - 685.4 km/s