Infrared emission from protostars

Abstract

view Abstract Citations (103) References (46) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Infrared emission from protostars. Adams, F. C. ; Shu, F. H. Abstract The authors use an approximate technique to calculate the temperature profiles, and thereby the emergent spectral energy distributions, of protostars which derive all their luminosity by infall of a gas and dust envelope. The formulation is general, but the application is to protostars with spherical symmetry. It is shown that the emergent spectrum in the infrared from the dust envelope is insensitive to the details assumed for the temperature profile as long as allowance is made for a transition from optically thick to optically thin conditions and luminosity conservation is enforced at an inner shell and an outer shell. An atlas of emergent spectral energy distributions is presented for a grid of values of the instantaneous mass M of the protostar and the mass infall rate M. The theoretical spectra consistently produce too little mid-infrared radiation in comparison with the observed sources, especially those which are in a fairly late stage of protostellar evolution. Publication: The Astrophysical Journal Pub Date: September 1985 DOI: 10.1086/163483 Bibcode: 1985ApJ...296..655A Keywords: Infrared Stars; Pre-Main Sequence Stars; Protostars; Stellar Radiation; Near Infrared Radiation; Optical Thickness; Radiative Transfer; Ray Tracing; Spectral Energy Distribution; Stellar Envelopes; Stellar Temperature; Temperature Profiles; Astrophysics full text sources ADS | data products SIMBAD (4)