Object: N-5089 On scan num: 276 278 280 282 284 286 Off scan num: 277 279 281 283 285 287 R.A.: 13.327711 hrs Dec.: 30.257270 deg On azimuth: 90.501673 deg On zenith dist.: 35.150016 deg Off azimuth: 90.472497 deg Off zenith dist.: 35.185795 deg MJD: 52617 UTC: 0.442373 Center freq.: 1410.384688 MHz Doppler: 0.00007917 Num. correlators: 2 Spectrom. atten.: 38 40 dB Bandwidth: 10.0 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 second-order least squares fit baseline removed using most of the baseline shown in Figure 1.
Peak intensity: 0.055 Jy Lower 20% velocity: 2007.4 km/s Upper 20% velocity: 2277.4 km/s Systemic velocity: 2142.4 km/s Line width (20%): 270.0 km/s Profile integral: 11.59 Jy * km/s A: 10.51 B: 11.67 Ratio B/A: 1.111 Flux integral velocity range: 1982.5 - 2296.1 km/s