Object: 501-055 On scan num: 53 55 57 59 61 63 65 67 69 71 73 75 Off scan num: 54 56 58 60 62 64 66 68 70 72 74 76 R.A.: 0.967073 hrs Dec.: 30.705197 deg On azimuth: 283.296452 deg On zenith dist.: 53.977500 deg Off azimuth: 283.277623 deg Off zenith dist.: 53.948506 deg MJD: 52258 UTC: 0.211852 Center freq.: 1398.263724 MHz Doppler: -0.00007992 Num. correlators: 2 Spectrom. atten.: 33 39 dB Bandwidth: 10.0 MHz Num. channels: 1024
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 one or more 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: 0.0046 Jy Lower 20% velocity: 4612.7 km/s Upper 20% velocity: 4845.0 km/s Systemic velocity: 4728.9 km/s Line width (20%): 232.4 km/s Profile integral: 0.840 Jy * km/s Flux integral velocity range: 4597.9 - 4861.7 km/s