Object: U-00614 On scan num: 746 748 750 752 754 756 Off scan num: 747 749 751 753 755 757 R.A.: 0.993403 hrs Dec.: 35.559687 deg On azimuth: 268.356951 deg On zenith dist.: 18.685897 deg Off azimuth: 268.111101 deg Off zenith dist.: 18.409490 deg MJD: 52244 UTC: 0.131528 Center freq.: 1409.316217 MHz Doppler: -0.00005958 Num. correlators: 2 Spectrom. atten.: 33 39 dB Bandwidth: 5.0 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. Narrow band interference was removed from 9 channels by interpolation between the nearest valid channels
Peak intensity: 0.031 Jy
Lower 20% velocity: 2250.5 km/s
Upper 20% velocity: 2462.6 km/s
Systemic velocity: 2356.6 km/s
Line width (20%): 212.1 km/s
Profile integral: 5.34 Jy * km/s
A: 4.30
B: 4.98
Ratio B/A: 1.158
Flux integral
velocity range: 2237.5 - 2477.3 km/s
high velocity wing clobbered by RFI