The Infrared Telescope Facility (IRTF) spectral library

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On Measuring the Infrared Luminosity of Distant Galaxies with the Space Infrared Telescope Facility

The Space Infrared Telescope Facility (SIRTF ) will revolutionize the study of dust–obscured star formation in distant galaxies. Although deep images from the Multiband Imaging Photometer for SIRTF (MIPS) will provide coverage at 24, 70, and 160μm, the bulk of MIPS–detected objects may only have accurate photometry in the shorter wavelength bands due to the confusion noise. Therefore, we have e...

The Infrared Array Camera (IRAC) for the Space Infrared Telescope Facility (SIRTF)

The Space Infrared Telescope Facility (SIRTF) contains three focal plane instruments, one of which is the Infrared Array Camera (IRAC). IRAC is a four-channel camera that provides simultaneous 5.12 × 5.12 arcmin images at 3.6, 4.5, 5.8, and 8 microns. The pixel size is 1.2 arcsec in all bands. Two adjacent fields of view in the SIRTF focal plane are viewed by the four channels in pairs (3.6 and...

Near-infrared spectral monitoring of Triton with IRTF/SpeX I: establishing a baseline for rotational variability

We present eight new 0.8 to 2.4 μm spectral observations of Neptune’s satellite Triton, obtained at IRTF/SpeX during 2002 July 15– 22 UT. Our objective was to determine how Triton’s near-infrared spectrum varies as Triton rotates, and to establish an accurate baseline for comparison with past and future observations. The most striking spectral change detected was in Triton’s nitrogen ice absorp...

Near-infrared spectral monitoring of Triton with IRTF/SpeX II: Spatial distribution and evolution of ices

0019-1035/$ see front matter 2009 Elsevier Inc. A doi:10.1016/j.icarus.2009.08.005 * Corresponding author. E-mail address: [email protected] (W.M. Grun 1 Visiting or remote Astronomer at the Infrared operated by the University of Hawaii under Cooperati with the National Aeronautics and Space Administratio Planetary Astronomy Program. This report arises from an ongoing program to monitor Neptu...