Results 11 to 20 of about 118,845 (247)
Discovery of the Elusive Carbonic Acid (HOCOOH) in Space
The Astrophysical Journal, 2023 A quarter century after the detection of the last interstellar carboxylic acid, acetic acid (CH _3 COOH), we report the discovery of a new one, the cis-trans form of carbonic acid (HOCOOH), toward the Galactic center molecular cloud G+0.693–0.027. HOCOOH
Miguel Sanz-Novo +14 more
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New identifications of Fe XVII spectral lines in solar flares [PDF]
Monthly Notices of the Royal Astronomical Society, 1985 The identifications of Fe XVII transitions between the 2s(2)2p(5)3s, 3p, and 3d configurations published by Jupen (1984) are reviewed. The review is based on examining spectroheliograms of solar flares obtained by a Naval Research Laboratory instrument on Skylab (S082-A).
U. Feldman, G. A. Doschek, J. F. Seely
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Detection and identification of microplastics directly in water by hyperspectral imaging [PDF]
EPJ Web of Conferences, 2023 We use hyperspectral imaging to identify the plastic types constituting mixtures of microplastics directly in water. For the current study we used known microplastics made by milling original pristine plastic sheets and mixed them in water.
Gebejes Ana +8 more
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The Astrophysical Journal, 2023 Freshly synthesized r -process elements in kilonovae ejecta imprint absorption features on optical spectra, as observed in the GW170817 binary neutron star merger. These spectral features encode insights into the physical conditions of the r -process and
Nicholas Vieira +6 more
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Chemosensors, 2022 The increasing demand for rare earth elements (REE) requires faster analysis techniques for their rapid exploration. Laser-induced breakdown spectroscopy (LIBS) has on-site and real time analysis capability.
Muhammad Sher Afgan +6 more
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Line identification in the Ca II K spectral region of sharp-lined B-type stars [PDF]
Astronomy & Astrophysics, 2001 Previous Ca ii K observations of the B-type star HD 83206 have revealed putative high-velocity interstellar clouds (HVCs) at Local Standard of Rest (LSR) velocities of −80 and −110 km s−1. Similar results were also found for the sightline towards HD 135485.
N. Lehner +4 more
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电力工程技术, 2022 To solve the problem of traditional pollution detection methods on the prevention and control of pollution flashover of transmission line insulators,the non-contact and high-resolution hyperspectral technology is used to study the on-line pollution ...
SHEN Long +5 more
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Ultraviolet Line Identifications and Spectral Formation Near Max Light in Type Ia Supernova 2011fe [PDF]
The Astrophysical Journal, 2020 Abstract We present ultraviolet line identifications of near maximum-light Hubble Space Telescope observations of SN 2011fe using synthetic spectra generated from both SYNOW and PHOENIX. We find the spectrum to be dominated by blends of iron group elements Fe, Co, and Ni (as expected due to heavy line blanketing by these elements in the ...
James M. DerKacy +6 more
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LifeWe employed data from the Spitzer Space Telescope to investigate the presence of the aromatic amino acids tyrosine and phenylalanine in the interstellar gas of the young star cluster IC 348.
Susana Iglesias-Groth +3 more
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Line identifications in stars of spectral type SC
The Astrophysical Journal Supplement Series, 1989 Une identification des raies et longueurs d'onde, de 5850 a 6850 A, de l'etoile SC, CY Cyg, est ...
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