Results 61 to 70 of about 606 (180)
The Astrophysical JournalThe James Clerk Maxwell Telescope (JCMT) Transient Survey has been monitoring eight Gould Belt low-mass star-forming regions since 2015 December and six somewhat more distant intermediate-mass star-forming regions since 2020 February with the ...
Steve Mairs +17 more
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Some Problems and Instrumental Features of Submillimeter Astronomy [PDF]
Highlights of Astronomy, 1968 Modern astronomy includes optical, ultraviolet, infrared and, in recent years, radio, γ-ray, and X-ray astronomy. Such a classification is justified to a certain degree. In fact, the difference in wavelength ranges causes a distinction in the methods and techniques of receiving radiation.
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Site Quality Analysis for an Indian Submillimeter Telescope: A Reanalysis-based Approach
The Astronomical JournalThe Himalayan plateau region of Ladakh, India, is a potential host for a science-class submillimeter observatory, building on existing astronomical infrastructure near Hanle and Merak.
Tanmay Singh +2 more
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SO Emission in the Dynamically Perturbed Protoplanetary Disks around CQ Tau and MWC 758
The Astrophysical JournalWe report the serendipitous detection of the SO J _N = 6 _5 –5 _4 (219.949 GHz) rotational transition in archival Atacama Large Millimeter/submillimeter Array observations of the spiral hosting protoplanetary disks around CQ Tau (with ≈4.9 σ ...
Francesco Zagaria +27 more
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Superconducting On-Chip Spectrometery for Millimeter-submillimeter Wave Astronomy
IEICE Transactions on Electronics, 2015 Since the birth of astrophysics, astronomers have been using free-space optics to analyze light falling on Earth. In the future however, thanks to the advances in photonics and nanoscience/nanotechnology, much of the manipulation of light might be carried out using not optics but confined waveguides, or circuits, on a chip.
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Mass Assembly in Massive Star Formation: A Fragmentation Study of ATLASGAL Clumps
The Astrophysical JournalThe mass assembly in star-forming regions arises from the hierarchical structure in molecular clouds in tandem with fragmentation at different scales.
Jagadheep D. Pandian +5 more
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The Proxima Centauri Campaign—First Constraints on Millimeter Flare Rates from ALMA
The Astrophysical JournalProxima Centauri (Cen) has been the subject of many flaring studies due to its proximity and potential to host habitable planets. The discovery of millimeter flares from this M dwarf with Atacama Large Millimeter/submillimeter Array (ALMA) has opened a ...
Kiana Burton +8 more
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Submillimeter and Mid-infrared Variability of Young Stellar Objects in the M17 H II Region
The Astronomical JournalWe conducted a comprehensive analysis of young stellar object (YSO) variability at submillimeter and mid-infrared (mid-IR) wavelengths for the M17 H ii region using 3.5 yr monitoring data from the James Clerk Maxwell Telescope (JCMT) Transient Survey at ...
Zhiwei Chen +14 more
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A Large Molecular Gas Reservoir in the Protocluster SPT2349−56 at z = 4.3
The Astrophysical Journal LettersWe present Atacama Compact Array (ACA) Band-3 observations of the protocluster SPT2349−56, an extreme system hosting >10 ultraluminous infrared galaxies (ULIRGs; L _IR ≳ 10 ^12 L _⊙ ) in a 200 kpc diameter region at z = 4.3, to study its integrated ...
Dazhi Zhou +15 more
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The Astrophysical JournalThe discovery of protoplanets and circumplanetary disks provides a unique opportunity to characterize planet formation through observations. Massive protoplanets shape the physical and chemical structure of their host circumstellar disk by accretion ...
Felipe Alarcón, Edwin A. Bergin
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