Jiménez-Esteban, F. M.Rizzo Caminos, José RicardoPalau, Aina2013-11-272013-11-272010Jiménez-Esteban, F. M., Rizzo-Caminos, J. R., & Palau, A. (2010). Multiple shells around G79.29+0.46 revealed from near-ir to millimeter data. Astrophysical Journal, 713(1), 429-439.0004637Xhttp://hdl.handle.net/11268/1022Aiming to perform a study of the warm dust and gas in the luminous blue variable star G79.29+0.46 and its associated nebula, we present infrared Spitzer imaging and spectroscopy, and new CO J = 2 -> 1 and 4 -> 3 maps obtained with the IRAM 30 m radio telescope and the Submillimeter Telescope, respectively. We have analyzed the nebula detecting multiple shells of dust and gas connected to the star. Using Infrared Spectrograph-Spitzer spectra, we have compared the properties of the central object, the nebula, and their surroundings. These spectra show a rich variety of solid-state features (amorphous silicates, polycyclic aromatic hydrocarbons, and CO(2) ices) and narrow emission lines, superimposed on a thermal continuum. We have also analyzed the physical conditions of the nebula, which point to the existence of a photo-dissociation region.engCircumstellar MatterDust, ExtinctionIsm: Individual Objects (G79.29+0.46)ISM: Lines and BandsStars: EvolutionStars: Mass-LossLuminous Blue VariablesSpitzer-Space-TelescopeRing NebulaG79.29+0.46Photodissociation RegionsSupernova RemnantHii-RegionsInfrared-SpectroscopyInterstellar DustIon IrradiationStar-FormationAstronomy & Astrophysicsjournal article10.1088/0004-637X/713/1/429open accessAstrofísicaBiología espacial