Infrared Array Camera (IRAC) colors of young stellar objects

被引:364
作者
Allen, LE
Calvet, N
D'Alessio, P
Merin, B
Hartmann, L
Megeath, ST
Gutermuth, RA
Muzerolle, J
Pipher, JL
Myers, PC
Fazio, GG
机构
[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
[2] Ctr Radioastron & Astrofis, Morelia 58089, Michoacan, Mexico
[3] INTA, Lab Astrofis Espacial & Fis Fundamental, Madrid 50727, Spain
[4] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA
[5] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
关键词
infrared : stars; stars : formation; stars : pre-main-sequence;
D O I
10.1086/422715
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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.
引用
收藏
页码:363 / 366
页数:4
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