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SpitzerObservations of NGC 2547: The Disk Population at 25 Million Years
Astrophysical Journal Supplement Series
We present Spitzer observations of the young cluster NGC 2547, obtaining photometry at 3. 6, 4.5, 5.8, 8.0, and 24 m, reaching significantly fainter infrared sensitivities than previous studies. With these observations, we investigate the disk frequency in this cluster. A total of 3770, 2408, 1988, 1238, and 1123 sources were detected in the common region of the five respective bands. The detection limits were 14.9, 14.0, 13.5, 13.3, and 12.0 mag, respectively. The large majority of sources aredoi:10.1086/422688 fatcat:zfddwopb5vboxhpejga43hbwve