Object: U-05540 On scan num: 988 990 992 994 996 998 Off scan num: 989 991 993 995 997 999 R.A.: 10.272656 hrs Dec.: 37.780179 deg On azimuth: 57.959548 deg On zenith dist.: 68.631009 deg Off azimuth: 57.936553 deg Off zenith dist.: 68.664325 deg MJD: 52532 UTC: 0.409572 Center freq.: 1414.970245 MHz Doppler: 0.00004772 Num. correlators: 2 Spectrom. atten.: 35 39 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1800 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 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 1.
Peak intensity: 0.077 Jy Lower 20% velocity: 1091.9 km/s Upper 20% velocity: 1228.4 km/s Systemic velocity: 1160.2 km/s Line width (20%): 136.5 km/s Profile integral: 7.40 Jy * km/s A: 6.89 B: 7.23 Ratio B/A: 1.049 Flux integral velocity range: 1053.8 - 1307.3 km/s