Object: LVM267. On scan num: 1048 1050 Off scan num: 1049 1051 R.A.: 8.655235 hrs Dec.: 71.704028 deg On azimuth: 339.773007 deg On zenith dist.: 40.125511 deg Off azimuth: 339.789107 deg Off zenith dist.: 40.107510 deg MJD: 52284 UTC: 0.401597 Center freq.: 1400.520939 MHz Doppler: -0.00000168 Num. correlators: 2 Spectrom. atten.: 33 38 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 480 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 8 channels by interpolation between the nearest valid channels
Peak intensity: 0.035 Jy Lower 20% velocity: 4134.1 km/s Upper 20% velocity: 4330.4 km/s Systemic velocity: 4232.3 km/s Line width (20%): 196.3 km/s Profile integral: 5.63 Jy * km/s A: 4.12 B: 5.60 Ratio B/A: 1.360 Flux integral velocity range: 4116.1 - 4345.1 km/s