Results 11 to 20 of about 569 (189)
Technology for Submillimeter Astronomy [PDF]
2007 IEEE/MTT-S International Microwave Symposium, 2007 Despite about three decades of progress, the field of submillimeter astronomy remains quite challenging, because the detection technology is still under development and the transmission of the atmosphere is poor. The latter problem has been overcome by constructing submillimeter telescopes at excellent sites, first on Mauna Kea and later in Chile and ...
openaire +2 more sources
Outflows and disks of brown dwarfs with SMA, CARMA and ALMA
EPJ Web of Conferences, 2013 Brown dwarfs are on the dividing line between planets and stars. Up to date, about 1,000 brown dwarfs, including the coolest known brown dwarfs with temperatures of ∼300 K as cool as the human body, have been discovered.
Tho Do D. +4 more
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ALMA Millimeter/Submillimeter Sources among Spitzer SMUVS Galaxies at z > 2 in the COSMOS Field
The Astrophysical Journal, 2023 Submillimeter observations reveal the star formation activity obscured by dust in the young Universe. It still remains unclear how galaxies detected at submillimeter wavelengths are related to ultraviolet/optical-selected galaxies in terms of their ...
Tomoko L. Suzuki +2 more
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The Astrophysical Journal, 2023 We present a sample of 30 massive (log( M _* / M _⊙ ) > 11) z = 3–5 quiescent galaxies selected from the Spitzer-HETDEX Exploratory Large Area (SHELA) Survey and observed at 1.1 mm with Atacama Large Millimeter/submillimeter Array (ALMA) Band 6 ...
Katherine Chworowsky +13 more
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The Astrophysical Journal Supplement Series, 2023 The Atacama Large Millimeter/submillimeter Array high-frequency long-baseline campaign in 2019 (HF-LBC-2019) was arranged to undertake band 9 (690 GHz) and 10 (850 GHz) observations using the longest 16 km baselines in order to explore calibration ...
Luke T. Maud +8 more
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The Submillimeter Wave Astronomy Satellite [PDF]
International Astronomical Union Colloquium, 1990 AbstractThe Submillimeter Wave Astronomy Satellite (SWAS) is a NASA Small-Explorer Class experiment whose objective is to study both the chemical composition and the thermal balance in dense (NH2 > 103 cm−3) molecular clouds and, by observing many clouds throughout our galaxy, relate these conditions to the processes of star formation.
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Dust Properties of 870 μm-selected Galaxies in GOODS-S
The Astrophysical Journal, 2023 We analyze the dust properties of 57 870 μ m-selected dusty star-forming galaxies in GOODS-S using new deep Atacama Large Millimeter/Submillimeter Array 1.2, 2, and 3 mm continuum imaging together with other far-infrared through millimeter data.
S. J. McKay +4 more
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A Low Noise Receiver for Submillimeter Astronomy [PDF]
SPIE Proceedings, 1986 A broadband, low noise heterodyne receiver, suitable for astronomical use, has been built using a Pb alloy superconducting tunnel junction (SIS). The RF coupling is quasioptical via a bowtie antenna on a quartz lens and is accomplished without any tuning elements.
Wengler, M. J. +3 more
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The Astronomical JournalIn this paper, we report on the current status and performance of the balanced superconductor-insulator-superconductor (SIS) receiver suite developed for the Leighton Chajnantor Telescope (LCT).
Duo Cao +7 more
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First Principles Rovibronic Absorption Spectra of HF Molecule
Journal of Computational Chemistry, Volume 47, Issue 6, March 5, 2026.Hydrogen fluoride (HF) is astrophysically important, as it has been detected in sunspots, Venus, red giants, and the interstellar medium, serving as a probe of exoplanet atmospheres. This article presents an ab initio investigation of HF rovibronic spectroscopy, combining high‐level electronic‐structure data with nuclear‐motion solutions and refinement
Nariman Abu El Kher +5 more
wiley +1 more source