Object: SL0934+0014 On scan num: 622 624 626 628 630 632 Off scan num: 623 625 627 629 631 633 R.A.: 9.569603 hrs Dec.: 0.241658 deg On azimuth: 123.705471 deg On zenith dist.: 54.594628 deg Off azimuth: 123.670599 deg Off zenith dist.: 54.619390 deg MJD: 52242 UTC: 0.310475 Center freq.: 1397.748619 MHz Doppler: 0.00009660 Num. correlators: 2 Spectrom. atten.: 31 38 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 first-order least squares fit baseline removed using most of the baseline shown in Figure 1.
Peak intensity: 0.019 Jy Lower 20% velocity: 4682.0 km/s Upper 20% velocity: 5022.4 km/s Systemic velocity: 4852.2 km/s Line width (20%): 340.5 km/s Profile integral: 4.96 Jy * km/s A: 3.81 B: 5.10 Ratio B/A: 1.337 Flux integral velocity range: 4655.6 - 5049.3 km/s
very shallow wings, possibly two profiles blended