Object: Arp335 On scan num: 13 15 17 Off scan num: 14 16 18 R.A.: 11.073229 hrs Dec.: 4.828598 deg On azimuth: 143.694549 deg On zenith dist.: 39.027592 deg Off azimuth: 143.653469 deg Off zenith dist.: 39.041323 deg MJD: 52598 UTC: 0.455671 Center freq.: 1384.952879 MHz Doppler: 0.00009664 Num. correlators: 2 Spectrom. atten.: 38 40 dB Bandwidth: 5.0 MHz Num. channels: 1024 Eff. integration: 660 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 8 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: 0.028 Jy Lower 20% velocity: 7454.2 km/s Upper 20% velocity: 7952.6 km/s Systemic velocity: 7703.4 km/s Line width (20%): 498.4 km/s Profile integral: 10.05 Jy * km/s A: 9.68 B: 10.73 Ratio B/A: 1.108 Flux integral velocity range: 7427.1 - 7981.0 km/s