Object: LVM661. On scan num: 103 105 107 109 111 113 Off scan num: 104 106 108 110 112 114 R.A.: 15.115113 hrs Dec.: 66.176275 deg On azimuth: 331.321794 deg On zenith dist.: 57.009184 deg Off azimuth: 331.310758 deg Off zenith dist.: 56.985572 deg MJD: 52421 UTC: 0.432847 Center freq.: 1405.451810 MHz Doppler: -0.00002901 Num. correlators: 2 Spectrom. atten.: 35 42 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1740 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 2 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: 0.035 Jy Lower 20% velocity: 3226.7 km/s Upper 20% velocity: 3446.8 km/s Systemic velocity: 3336.8 km/s Line width (20%): 220.0 km/s Profile integral: 6.05 Jy * km/s A: 5.27 B: 6.49 Ratio B/A: 1.231 Flux integral velocity range: 3212.7 - 3467.7 km/s