The Astrophysical Journal
We present millimeter and submillimeter wavelength observations and near-infrared K -band imaging toward the bright gamma-ray burst GRB 010222. Over seven epochs the flux density of the source was constant wit h an average flux density 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∝ να). We rule out the possibility that this emission originated from the burst or its afterglow and we conclu de that it is due to a dusty, high redshift starburst galaxy (SMM J14522+43 01). We argue that the host galaxy of GRB 010222 is the most plausible count erpart of SMM J14522+4301, based in part on the centimeter detection of th e host at the expected level. The optical/NIR properties of the host galaxy of GR B 010222 suggest that it is a blue, sub-L∗, similar to other GRB host galaxies. This contrasts with the enormous far-infrared luminosity of this galaxy based on our submillimeter detection (LBol ≈ 4 × 1012L⊙). 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.
Frail, D. A.; Bertoldi, F.; Moriarty‐Schieven, G. H.; Berger, E.; Price, P. A.; Bloom, J. S.; Sari, R.; Kulkarni, S. R.; Gerardy, C. L.; and Reichart, D. E., "GRB 010222: A Burst within a Starburst" (2001). Open Dartmouth: Faculty Open Access Articles. 2745.