Object: N7679 On scan num: 502 504 506 Off scan num: 503 505 507 R.A.: 23.479739 hrs Dec.: 3.512501 deg On azimuth: 184.407241 deg On zenith dist.: 34.892603 deg Off azimuth: 184.377401 deg Off zenith dist.: 34.891527 deg MJD: 52266 UTC: 0.948438 Center freq.: 1396.315272 MHz Doppler: -0.00009937 Num. correlators: 2 Spectrom. atten.: 34 40 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 840 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: 0.048 Jy Lower 20% velocity: 4999.7 km/s Upper 20% velocity: 5294.8 km/s Systemic velocity: 5147.2 km/s Line width (20%): 295.2 km/s Profile integral: 10.54 Jy * km/s A: 7.32 B: 10.03 Ratio B/A: 1.371 Flux integral velocity range: 4972.0 - 5321.8 km/s