Strong PAH Emission from z~2 ULIRGs

  title={Strong PAH Emission from z~2 ULIRGs},
  author={Vandana Desai and Baruch Thomas Soifer and Arjun Dey and Emeric Le Floc’h and Lee Armus and Kate Brand and Michael J. I. Brown and Mark Brodwin and Buell Tomasson Jannuzi and James R. Houck and Daniel W. Weedman and Matthew L. N. Ashby and Anthony Gonz{\'a}lez and Jiasheng Huang and Howard Alan Smith and Harry I. Teplitz and Steve P. Willner and Jason Melbourne},
  • Vandana Desai, Baruch Thomas Soifer, +15 authors Jason Melbourne
  • Published 2009
  • Physics
  • Using the Infrared Spectrograph on board the Spitzer Space Telescope, we present low-resolution (64 0.5 mJy; 2) R-[24] > 14 Vega mag; and 3) a prominent rest-frame 1.6 micron stellar photospheric feature redshifted into Spitzer's 3-8 micron IRAC bands. Of these, 20 show emission from polycyclic aromatic hydrocarbons (PAHs), usually interpreted as signatures of star formation. The PAH features indicate redshifts in the range 1.5 =1.96 and a dispersion of 0.30. Based on local templates, these… CONTINUE READING

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