Object: N1050 On scan num: 652 654 656 658 Off scan num: 653 655 657 659 R.A.: 2.709929 hrs Dec.: 34.763515 deg On azimuth: 172.489617 deg On zenith dist.: 3.710363 deg Off azimuth: 174.014719 deg Off zenith dist.: 3.699718 deg MJD: 52498 UTC: 0.440567 Center freq.: 1402.554451 MHz Doppler: 0.00009326 Num. correlators: 2 Spectrom. atten.: 39 37 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1140 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: 0.010 Jy Lower 20% velocity: 3765.4 km/s Upper 20% velocity: 4040.5 km/s Systemic velocity: 3902.9 km/s Line width (20%): 275.1 km/s Profile integral: 2.23 Jy * km/s A: 2.06 B: 2.85 Ratio B/A: 1.383 Flux integral velocity range: 3748.5 - 4057.3 km/s