A major goal of modern astrophysics is to understand the processes by which the universe evolved from its initial simplicity, as seen in measurements of the Cosmic Microwave Background, to the universe we see today, with complexity on all... more
A major goal of modern astrophysics is to understand the processes by which the universe evolved from its initial simplicity, as seen in measurements of the Cosmic Microwave Background, to the universe we see today, with complexity on all scales. While the diffuse background measurements of COBE reveal the importance of the far infrared and submillimeter in early galaxy and
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The scientific capabilities of the James Webb Space Telescope (JWST) fall into four themes. The End of the Dark Ages: First Light and Reionization theme seeks to identify the first luminous sources to form and to determine the ionization... more
The scientific capabilities of the James Webb Space Telescope (JWST) fall into four themes. The End of the Dark Ages: First Light and Reionization theme seeks to identify the first luminous sources to form and to determine the ionization history of the universe. The Assembly of Galaxies theme seeks to determine how galaxies and the dark matter, gas, stars, metals,
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ABSTRACT
The Microlensing Planet Finder (MPF) is a proposed Discovery mission that will complete the first census of extrasolar planets with sensitivity to planets like those in our own solar system. MPF will employ a 1.1m aperture telescope,... more
The Microlensing Planet Finder (MPF) is a proposed Discovery mission that will complete the first census of extrasolar planets with sensitivity to planets like those in our own solar system. MPF will employ a 1.1m aperture telescope, which images a 1.3 sq. deg. field-of-view in the near-IR, in order to detect extrasolar planets with the gravitational microlensing effect. MPF's sensitivity
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ABSTRACT VERA (VLBI Exploration of Radio Astrometry), being promoted by National Astronomical Observatory of Japan in collaboration with several Japanese universities, is a new VLBI array for phase referencing astrometry approved to start... more
ABSTRACT VERA (VLBI Exploration of Radio Astrometry), being promoted by National Astronomical Observatory of Japan in collaboration with several Japanese universities, is a new VLBI array for phase referencing astrometry approved to start its construction in 2000. VERA, the first VLBI array dedicated to phase referencing VLBI, has a dual beam antenna system which enables us to observe a Galactic maser source and a nearby reference source simultaneously to remove the atmospheric fluctuation, and will measure positions of Galactic maser sources relative to reference sources (QSOs and radio galaxies) with 10 microarcsec level accuracy. With that accuracy, VERA will be able to determine parallaxes and proper motions of maser sources in the whole Galaxy. The major science targets of VERA will include 3D structure of the Galaxy and the distribution of dark matter, physics of outflow in star forming regions and stellar envelopes, precise calibration of the period-luminosity relation of Mira-type stars, and structure an evolution of QSOs and radio galaxies.© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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... Matthias; Bennett, Charles L.; Burigana, Carlo; Chiosi, Cesare; D'Onofrio, Mauro; Dressler, Alan; Gioia, Isabella; Hasinger, Günther; Macias-Perez, Juan Francisco; Madau, Piero; Marziani, Paola; Mather, John;... more
... Matthias; Bennett, Charles L.; Burigana, Carlo; Chiosi, Cesare; D'Onofrio, Mauro; Dressler, Alan; Gioia, Isabella; Hasinger, Günther; Macias-Perez, Juan Francisco; Madau, Piero; Marziani, Paola; Mather, John; Matteucci, Francesca; Olive, Keith; Peacock, John; Reich, Wolfgang ...
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... New York, NY 10011-4211, USA 10 Stamford Road, Oakleigh, VIC 3166, Australia Ruiz de Alarcon 13, 28014 Madrid, Spain Dock House, The ... 7 Clusters of galaxies and the fate of the Universe (Or how to be a cosmologist without really... more
... New York, NY 10011-4211, USA 10 Stamford Road, Oakleigh, VIC 3166, Australia Ruiz de Alarcon 13, 28014 Madrid, Spain Dock House, The ... 7 Clusters of galaxies and the fate of the Universe (Or how to be a cosmologist without really trying) 107 MEGAN DONAHUE 8 Dark ...
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... HS Stockman 1 , D. Fixsen 2,3 , RJ Hanisch 1 , JC Mather 3 , M. Nieto-Santisteban 1 , JD Offenberg 2,3 , R. Sengupta 2 , S. Stallcup 1 1 ... In the yardstick NASA design, the ISIM features an 8k 8k InSb imager--actually four... more
... HS Stockman 1 , D. Fixsen 2,3 , RJ Hanisch 1 , JC Mather 3 , M. Nieto-Santisteban 1 , JD Offenberg 2,3 , R. Sengupta 2 , S. Stallcup 1 1 ... In the yardstick NASA design, the ISIM features an 8k 8k InSb imager--actually four independent 4k 4k cameras--for deep imaging to sub-nJy ...
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To understand the cosmic history of element synthesis it will be important to obtain extinction-free measures of the heavy element contents of high-redshift objects and to chart two monumental events: the collapse of the first metal-free... more
To understand the cosmic history of element synthesis it will be important to obtain extinction-free measures of the heavy element contents of high-redshift objects and to chart two monumental events: the collapse of the first metal-free clouds to form stars, and the initial seeding of the universe with dust. The information needed to achieve these objectives is uniquely available in the far-infrared/submillimeter (FIR/SMM) spectral region. Following the Decadal Report and anticipating the development of the Single Aperture Far-IR (SAFIR) telescope and FIR/SMM interferometry, we estimate the measurement capabilities of a large-aperture, background-limited FIR/SMM observatory and an interferometer on a boom, and discuss how such instruments could be used to measure the element synthesis history of the universe.
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... Schlegel, Finkbeiner, & Davis (1998) treat the Galactic dust using the FIRAS Pass 4 data, along with the IRAS and DIRBE data. They estimate the temperatures and dust densities and produce a map and model of the dust. They ...
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... we find no gross difference in Becklin's star when the linear polarization is changed from northsouth to east-west (although a ... Printed in USA DETECTION OF THE J = 1 -~ 0 ROTATIONAL TRANSITION OF VIBRATIONALLY EXCITED... more
... we find no gross difference in Becklin's star when the linear polarization is changed from northsouth to east-west (although a ... Printed in USA DETECTION OF THE J = 1 -~ 0 ROTATIONAL TRANSITION OF VIBRATIONALLY EXCITED SILICON MONOXIDE P. THADDEUS AND J ...