GRB 010222: A burst within a starburst

D. A. Frail, F. Bertoldi, G. H. Moriarty-Schieven, E. Berger, P. A. Price, J. S. Bloom, R. Sari, S. R. Kulkarni, C. L. Gerardy, D. E. Reichart, S. G. Djorgovski, T. J. Galama, F. A. Harrison, F. Walter, D. S. Shepherd, J. Halpern, A. B. Peck, K. M. Menten, S. A. Yost, D. W. Fox

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

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 ∝ vα). 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 (LBol ≈ 4 × 10 12 L). 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.

Original languageEnglish (US)
Pages (from-to)829-835
Number of pages7
JournalAstrophysical Journal
Volume565
Issue number2 I
DOIs
StatePublished - Feb 1 2002

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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