2002ApJ...565..829F

We present millimeter- and submillimeter-wavelength observations and near-infrared K-band imaging toward the bright gamma-ray burst GRB 010222. Over seven different epochs, a constant source was detected with an average flux density of 3.74±0.53 mJy at 350 GHz and 1.05±0.22 mJy at 250 GHz, giving a spectral index α=3.78±0.25 (where F∝ν^α). We rule out the possibility that this emission originated from the burst or its afterglow, and we conclude that it is due to a dusty, high-redshift starburst galaxy (SMM J14522+4301). We argue that the host galaxy of GRB 010222 is the most plausible counterpart of SMM J14522+4301, based in part on the centimeter detection of the host at the expected level. The optical/near-IR properties of the host galaxy of GRB 010222 suggest that it is a blue sub-L_* galaxy, similar to other GRB host galaxies. This contrasts with the enormous far-infrared luminosity of this galaxy based on our submillimeter detection (L_Bol~4x10¹²L_☉). We suggest that this GRB host galaxy has a very high star formation rate, SFR ~600 M_☉ yr^–1, most of which is unseen at optical wavelengths.