Object: U-01011 On scan num: 710 712 714 716 718 720 Off scan num: 711 713 715 717 719 721 R.A.: 1.434395 hrs Dec.: 0.326459 deg On azimuth: 132.312063 deg On zenith dist.: 49.154712 deg Off azimuth: 132.280208 deg Off zenith dist.: 49.171977 deg MJD: 52243 UTC: 0.991042 Center freq.: 1411.247061 MHz Doppler: -0.00007491 Num. correlators: 2 Spectrom. atten.: 33 39 dB Bandwidth: 5.0 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. Narrow band interference was removed from 22 channels by interpolation between the nearest valid channels
Peak intensity: 0.027 Jy Lower 20% velocity: 1857.6 km/s Upper 20% velocity: 1984.9 km/s Systemic velocity: 1921.3 km/s Line width (20%): 127.3 km/s Profile integral: 2.96 Jy * km/s A: 2.44 B: 3.09 Ratio B/A: 1.265 Flux integral velocity range: 1848.0 - 1993.1 km/s
RFI at base of high velocity wing