Estimated IR and phosphorescence emission fluxes for specific polycyclic aromatic hydrocarbons in the Red Rectangle
INAF – Osservatorio Astronomico di Cagliari, Astrochemistry Group, Strada n.54, Loc. Poggio dei Pini, 09012 Capoterra (CA), Italy e-mail: [gmulas;gmalloci]@ca.astro.it
2 Centre d'Étude Spatiale des Rayonnements, CNRS et Université Paul Sabatier-Toulouse 3, Observatoire Midi-Pyrénées, 9 Avenue du colonel Roche, 31028 Toulouse Cedex 04, France e-mail: [christine.joblin;dominique.toublanc]@cesr.fr
Accepted: 13 September 2005
Following tentative identification of the blue luminescence in the Red Rectangle by Vijh et al., we computed absolute fluxes for the vibrational IR emission and phosphorescence bands of three small polycyclic aromatic hydrocarbons. The calculated IR spectra were compared with available ISO observations. A subset of the emission bands are predicted to be observable using presently available facilities, and can be used for an immediate, independent, discriminating test of their alleged presence in this well-known astronomical object.
Key words: astrochemistry / line: identification / circumstellar matter / ISM: individual objects: Red Rectangle / molecular processes / infrared: ISM
© ESO, 2006