Astron. J., 139, 2504-2524 (2010/June-0)
Combined analysis of images and spectral energy distributions of Taurus protostars.
GRAMAJO L.V., WHITNEY B.A., GOMEZ M. and ROBITAILLE T.P.
Abstract (from CDS):
We present an analysis of spectral energy distributions (SEDs), near- and mid-infrared images, and Spitzer spectra of eight embedded Class I/II objects in the Taurus-Auriga molecular cloud. The initial model for each source was chosen using the grid of young stellar objects (YSOs) and SED fitting tool of Robitaille et al. Then the models were refined using the radiative transfer code of Whitney et al. to fit both the spectra and the infrared images of these objects. In general, our models agree with previous published analyses. However, our combined models should provide more reliable determinations of the physical and geometrical parameters since they are derived from SEDs, including the Spitzer spectra, covering the complete spectral range; and high-resolution near-infrared and Spitzer IRAC images. The combination of SED and image modeling better constrains the different components (central source, disk, envelope) of the YSOs. Our derived luminosities are higher, on average, than previous estimates because we account for the viewing angles (usually nearly edge-on) of most of the sources. Our analysis suggests that the standard rotating collapsing protostar model with disks and bipolar cavities works well for the analyzed sample of objects in the Taurus molecular cloud.
circumstellar matter - infrared: stars - stars: formation - stars: imaging
At page 2508 IRAS 04361+2546 is a misprint for IRAS 04361+2547 and page 2517 IRAS 04325+2402 is a misprint for IRAS 04325+2405.
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