Physics
Scientific paper
Jul 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.460..215w&link_type=abstract
The Promise of the Herschel Space Observatory. Eds. G.L. Pilbratt, J. Cernicharo, A.M. Heras, T. Prusti, & R. Harris. ESA-SP 460
Physics
1
Interstellar Medium: Star Formation, Individual Source: L1551, Missions: First
Scientific paper
ISO spectroscopic observations are reported towards the well known infrared source L1551 IRS 5. The continuum spectral energy distribution has been modelled using a 2D radiative transfer model, and fitted for a central source luminosity of 50 Lsolar, surrounding a dense torus extending to a distance of ~ 30,000 AU, which has a total (gas + dust) mass of 25 Msolar. The extinction towards the outflow is estimated to be Av = 11 and the mid-plane optical depth to L1551 IRS 5 to be 140. On the basis of this model, the extinction curve shows that emission at wavelengths shorter than ~ 2 microns is due to scattered light from close to L1551 IRS 5, while at wavelengths greater than 4 microns, is seen through the full extinguishing column towards the central source.
Benedettini Milena
Caux Emmanuel
Correia J. C.
Justtanont Kay
Kaufman Maike
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