Infrared Array Camera (IRAC) Colors of Young Stellar Objects
The Astrophysical Journal Supplement Series2004Vol. 154(1), pp. 363–366
Citations Over TimeTop 1% of 2004 papers
Shadab Alam, Nuria Calvet, Paola D’Alessio, B. Merín, Lee Hartmann, S. T. Megeath, Robert Gutermuth, James Muzerolle, J. L. Pipher, Philip C. Myers, G. G. Fazio
Abstract
We compare the infrared colors predicted by theoretical models of protostellar envelopes and protoplanetary disks with initial observations of young stellar objects made with the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. Disk and envelope models characterized by infall and/or accretion rates found in previous studies can quantitatively account for the range of IRAC colors found in four young embedded clusters: S140, S171, NGC 7129, and Cep C. The IRAC color-color diagram ([3.6]-[4.5] vs. [5.8]-[8.0]) can be used to help distinguish between young stars with only disk emission and protostars with circumstellar envelopes.
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