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The Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) on the Hubble Space telescope was used for several unbiased deep sky surveys at high galactic latitude. The instrument was also used for directed surveys of quiescent and starburst galaxies. Snapshot surveys of AGNs were also carried out. Of interest to the ISO community was the parallel spectroscopic survey which detected Há emission...
The Sloan Digital Sky Survey (SDSS) will provide a photometrically and astrometrically calibrated imaging survey of one-quarter of the sky in five bands to a depth of g ∼ 23 mag and a spectroscopic survey of the 106 brightest galaxies and 105 brightest quasars. This talk describes the operation of the survey, the data obtained over the year of commissioning, and some of the first science results from...
NASA will launch the Space Infrared Telescope Facility (SIRTF) at the end of 2001. SIRTF is an 85-cm cryogenically cooled telescope using large format infrared arrays in cameras operating from 3.5 to 160μm and spectrographs from 5 to 40μm and, at very low resolution, from 52 to 99μm. Coincidentally - since no one can be given credit for planning the missions this way - SIRTF generally has strengths...
The Infrared Spectrograph (IRS) is one of the three instruments on board the Space Infrared Telescope Facility (SIRTF) to be launched in December 2001. The IRS will provide high resolution spectra (R≈600) from 10–37 μm and low resolution spectra (R≥60) from 5–40 μm. Its high sensitivity and “spectral mapping”-mode make it a powerful instrument for observing both faint point-like and extended sources...
The ‘Far InfraRed and Submillimetre Telescope’, (FIRST), is the fourth cornerstone mission in the European Space Agency (ESA) science programme. It will perform photometry and spectroscopy in the far infrared and submillimetre part of the spectrum, covering approximately the 60–670 μm range. FIRST will carry a 3.5 metre passively cooled telescope, to be supplied by NASA, and house a science payload...
The joint USand German SOFIA project to develop and operate a 2.5 - meter infrared airborne telescope in a Boeing 747-SP is now well into development. Work on the aircraft and the telescope has started. First science fiights will begin in 2003 with 20% of the observing time assigned to German investigators. The observatory is expected to operate for over 20 years. The sensitivity, characteristics...
Deep X-ray surveys have shown that the cosmic X-ray background (XRB) is largely due to accretion onto supermassive black holes, integrated over cosmic time. However, the characteristic hard spectrum of the XRB can only be explained if most AGNsp ectra are heavily absorbed. The absorbed AGNwill suffer severe extinction and therefore, unlike classical QSOs, will not be prominent at optical wavelengths...
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