Object: NGC5433 On scan num: 39 41 43 45 47 49 Off scan num: 40 42 44 46 48 50 R.A.: 14.043346 hrs Dec.: 32.510620 deg On azimuth: 277.948821 deg On zenith dist.: 41.458139 deg Off azimuth: 277.925972 deg Off zenith dist.: 41.422528 deg MJD: 52348 UTC: 0.467130 Center freq.: 1400.106998 MHz Doppler: 0.00002497 Num. correlators: 2 Spectrom. atten.: 38 39 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1680 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 3 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. Narrow band interference was removed from 4 channels by interpolation between the nearest valid channels
Peak intensity: 0.022 Jy Lower 20% velocity: 4153.3 km/s Upper 20% velocity: 4571.3 km/s Systemic velocity: 4362.3 km/s Line width (20%): 418.0 km/s Profile integral: 6.73 Jy * km/s A: 5.68 B: 7.18 Ratio B/A: 1.263 Flux integral velocity range: 4127.1 - 4591.7 km/s
RFI on high velocity wing near 20 percent point