A Chandra observation of the z = 2.285 galaxy FSC 10214+4724: Evidence for a Compton-thick quasar?

D. M. Alexander, G. Chartas, F. E. Bauer, W. N. Brandt, C. Simpson, C. Vignali

Research output: Contribution to journalArticle

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Abstract

We present a ≈20 ks Chandra ACIS-S observation of the strongly lensed z = 2.285 ultraluminous infrared galaxy FSC 10214 + 4724. Although this observation achieves the equivalent sensitivity of an up to ≈4 Ms Chandra exposure (when corrected for gravitational lensing), the rest-frame 1.6-26.3 keV emission from FSC 10214 + 4724 is weak (LX ≈ 2 × 1042 erg s-1 for a lensing boost of ≈100); a significant fraction of this X-ray emission appears to be due to vigorous star formation activity. If FSC 10214 + 4724 hosts a quasar, as previously suggested, then it must be obscured by Compton-thick material. We compare FSC 10214 + 4724 to high-redshift SCUBA galaxies and discuss the X-ray identification of Compton-thick AGNs at high redshift.

Original languageEnglish (US)
Pages (from-to)L16-L20
JournalMonthly Notices of the Royal Astronomical Society: Letters
Volume357
Issue number1
DOIs
StatePublished - Feb 1 2005

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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