IRS spectroscopic studies of ULIRGs at z ~ 2

Identifying silicate-absorbed ULIRGs at z∼1–2 in the Bootes Field using Spitzer/IRS

Using the 16μm peakup imager on the Infrared Spectrograph (IRS) on Spitzer, we present a serendipitous survey of 0.0392 deg within the area of the NOAO Deep Wide Field Survey in Bootes. Combining our results with the available Multiband Imaging Photometer for Spitzer (MIPS) 24μm survey of this area, we produce a catalog of 150 16μm sources brighter than 0.18mJy (3σ) for which we derive measures...

Observations of ULIRGs with the IRS on Spitzer

Ultraluminous Infrared Galaxies (ULIRGs), those systems with LIR ≥ 10L", have the power output of quasars, yet (re-)emit the vast majority of their energy in the far-infrared part of the spectrum. Because this energy is reprocessed by dust, the origin of the power is often hidden from view. With the Infrared Spectrograph on the Spitzer Space Telescope, we have observed a large number of low-red...

Irs Spectra of Two Ultraluminous Infrared Galaxies at Z = 1.3

We present low-resolution (64 < R < 124) mid-infrared (8–38 μm) spectra of two z ≈ 1.3 ultraluminous infrared galaxies with L8−1000μm ≈ 10 13 L⊙: MIPS J142824.0+352619 and SST24 J142827.19+354127.71. The spectra were taken with the Infrared Spectrograph (IRS ) on board the Spitzer Space Telescope. Both objects were discovered in a Spitzer/MIPS survey of the Boötes field of the NOAO Deep Wide-Fi...

PHYSICAL PROPERTIES OF A PILOT SAMPLE OF SPECTROSCOPIC CLOSE PAIR GALAXIES AT z ∼ 2

We use Hubble Space Telescope Wide-Field Camera 3 (HST/WFC3) rest-frame optical imaging to select a pilot sample of star-forming galaxies in the redshift range z = 2.00 − 2.65 whose multicomponent morphologies are consistent with expectations for major mergers. We follow up this sample of major merger candidates with Keck/NIRSPEC longslit spectroscopy obtained in excellent seeing conditions (FW...

Spectroscopic studies of melamine at high pressure