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CN column densities and excitation temperatures
We analyse abundances and rotational temperatures of the interstellar CNmolecule. We have calculated the column densities and excitationtemperatures of the molecule along 73 lines of sight basing on ouroriginal measurements of the B 2?+ -X2?+ (0,0) vibrational band recorded in highsignal-to-noise ratio spectra and also for 88 directions based onmeasurements already available in literature. We compare the columndensities obtained from different bands of CN molecule available toground-based instruments. The obtained excitation temperatures in theanalysed directions show always an excess over the cosmic microwavebackground radiation (CMBR) temperature.
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Observation and Astrometry data
| Constellation: | Cassiopeia |
| Right ascension: | 03h32m24.80s |
| Declination: | +76°37'02.7" |
| Apparent magnitude: | 8.418 |
| Distance: | 336.7 parsecs |
| Proper motion RA: | -7.7 |
| Proper motion Dec: | -4.3 |
| B-T magnitude: | 8.625 |
| V-T magnitude: | 8.436 |
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