Object: 1216+062 On scan num: 153 155 157 159 161 163 Off scan num: 154 156 158 160 162 164 R.A.: 12.320397 hrs Dec.: 5.989201 deg On azimuth: 148.534544 deg On zenith dist.: 36.295907 deg Off azimuth: 148.495942 deg Off zenith dist.: 36.306211 deg MJD: 52611 UTC: 0.482743 Center freq.: 1412.895034 MHz Doppler: 0.00009402 Num. correlators: 2 Spectrom. atten.: 38 40 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 900 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 30 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 first-order least squares fit baseline removed using most of the baseline shown in Figure 2.
Peak intensity: 0.027 Jy Lower 20% velocity: 1257.8 km/s Upper 20% velocity: 2052.7 km/s Systemic velocity: 1655.3 km/s Line width (20%): 794.9 km/s Profile integral: 11.99 Jy * km/s A: 15.92 B: 0.00 Ratio B/A: 0.000 Flux integral velocity range: 1210.0 - 2128.9 km/s
poor baseline, shallow wings