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Paper: Use of the BT2 Water Line List to Determine the Rotational Temperature and H2O Column Density of the Circumstellar Envelope on Five Dates
Volume: 363, The Nature of V838 Mon and its Light Echo
Page: 95
Authors: Barber, R.J.; Banerjee, D.P.K.; Ashok, N.M.; Tennyson, J.
Abstract: BT2 is the most accurate and complete synthetic water line list in existence; it includes over 505 million transitions. BT2 spectra generated at various temperatures and column densities were fitted to observed H band spectra of V838 Mon recorded on 5 dates between 20 Nov. 2002 and 25 Dec. 2004. Five absorption features in the observed spectra were identified as being due to water. With one exception, where there was a single strong water line, all of the featues were blends of water lines. 17 individual water lines were assigned and the rotational temperatures and H2O column densities of the circumstellar ejected envelope were determined for each of the five dates.
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