Object: LVM31t. On scan num: 33 35 37 39 41 43 Off scan num: 34 36 38 40 42 44 R.A.: 0.645394 hrs Dec.: 41.996577 deg On azimuth: 291.792715 deg On zenith dist.: 37.862231 deg Off azimuth: 291.780985 deg Off zenith dist.: 37.828331 deg MJD: 52285 UTC: 0.079792 Center freq.: 1394.197708 MHz Doppler: -0.00008347 Num. correlators: 2 Spectrom. atten.: 33 38 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1380 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 13 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: 0.034 Jy Lower 20% velocity: 5464.1 km/s Upper 20% velocity: 5732.3 km/s Systemic velocity: 5598.2 km/s Line width (20%): 268.3 km/s Profile integral: 5.86 Jy * km/s A: 4.61 B: 6.03 Ratio B/A: 1.307 Flux integral velocity range: 5441.6 - 5756.0 km/s