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27 April 2024 |
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IRAC Colors of Young Stellar Objects | | Lori E. Allen
; Nuria Calvet
; Paola D’Alessio
; Bruno Merin
; Lee Hartmann
; S. Thomas Megeath
; Robert A. Gutermuth
; James Muzerolle
; Judith L. Pipher
; Philip C. Myers
; Giovanni G. Fazio
; | | Date: |
31 May 2004 | | Subject: | astro-ph | | Affiliation: | CfA), Nuria Calvet (CfA), Paola D’Alessio (CRA Morelia), Bruno Merin (LAEFF), Lee Hartmann (CfA), S. Thomas Megeath (CfA), Robert A. Gutermuth (U. Rochester), James Muzerolle (U. Arizona), Judith L. Pipher (U. Rochester), Philip C. Myers (CfA), G | | 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 (Werner et al. 2004, Fazio et al. 2004). 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: S 140, S 171, NGC 7129, and Cep C. The IRAC color-color diagram ([3.6]-[4.5] vs. [5.8]-[8.0]) can be used to help to distinguish between young stars with only disk emission and protostars with circumstellar envelopes. | | Source: | arXiv, astro-ph/0406003 | | Services: | Forum | Review | PDF | Favorites | |
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