Mid-Infrared Imaging of the Protostellar Binary L1448N IRS 3(A,B)

March 2003 • 2003ApJ...585..392C

Authors • Ciardi, David R. • Telesco, Charles M. • Williams, Jonathan P. • Fisher, R. Scott • Packham, Chris • Piña, Robert • Radomski, James

Abstract • Mid-infrared (10-25 μm) imaging of the protostellar binary system L1448N IRS 3(A,B) is presented. Only one source, IRS 3(A), was detected at mid-infrared wavelengths-all of the mid-infrared emission from IRS 3(A,B) emanates from IRS 3(A). The mid-infrared luminosity of IRS 3(A) is L_midir=1.3[d/(300pc)]²L_solar, which yields a central source mass, depending on the mass infall rate, of M_*=0.2M_solar(10^{- 6}M_solaryr^-1/M). The envelope mass surrounding IRS 3(A) is ~0.15 M_solar, suggesting that the central source and the envelope are of comparable mass. The locations of IRS 3(A) and IRS 3(B) on an M_env-L_bol diagram indicate that IRS 3(A) and IRS 3(B) appear to be Class I and Class 0 protostars, respectively.

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David Ciardi

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