Results 11 to 20 of about 711,060 (330)

Spectral Line Identification in Photoionized Silicon Plasma Emission.

open access: greenProposed for presentation at the APS DPP 2020 held November 9-13, 2020 in Albuquerque, NM., 2020
Patricia Cho
openalex   +3 more sources

UNCOVER: A NIRSpec Identification of a Broad-line AGN at z = 8.50 [PDF]

open access: yesAstrophysical Journal Letters, 2023
Deep observations with the James Webb Space Telescope (JWST) have revealed an emerging population of red pointlike sources that could provide a link between the postulated supermassive black hole seeds and observed quasars.
V. Kokorev   +31 more
semanticscholar   +1 more source

Wavelengths and Energy Levels of the Upper Levels of Singly Ionized Nickel (Ni ii) from 3d 8(3 F)5f to 3d 8(3 F)9s

open access: yesThe Astrophysical Journal Supplement Series, 2023
Using high-resolution spectra of Ni ii recorded using Fourier transform (FT) spectroscopy of continuous, nickel–helium hollow cathode discharge sources in the region 143–5555 nm (1800–70,000 cm ^−1 , the analysis of 1016 Ni ii lines confirmed and ...
Christian P. Clear   +4 more
doaj   +1 more source

Discovery of a 760 nm P Cygni line in AT2017gfo: Identification of yttrium in the kilonova photosphere [PDF]

open access: yesAstronomy & Astrophysics, 2023
Neutron star mergers are believed to be a major cosmological source of rapid neutron-capture elements. The kilonovae associated with neutron star mergers have to date yielded only a single well-identified spectral signature: the P Cygni line of Sr$^+$ at
A. Sneppen, D. Watson
semanticscholar   +1 more source

Building an ensemble learning model for gastric cancer cell line classification via rapid raman spectroscopy

open access: yesComputational and Structural Biotechnology Journal, 2023
Cell misuse and cross-contamination can affect the accuracy of cell research results and result in wasted time, manpower and material resources. Thus, cell line identification is important and necessary.
Kunxiang Liu   +10 more
doaj   +1 more source

A Low-mass line-rich Core Found in Massive Star-forming Region IRAS 16351-4722

open access: yesThe Astrophysical Journal, 2023
We present Atacama Large Millimeter/submillimeter Array subarcsecond-resolution observations of both continuum and molecular lines at 345 GHz toward the massive star-forming region IRAS 16351-4722 (hereafter I16351).
Meizhu Liu   +12 more
doaj   +1 more source

Critically Evaluated Atomic Data for the Au iv Spectrum

open access: yesThe Astrophysical Journal Supplement Series, 2023
A spectral investigation of triply ionized gold (Au iv ) has been carried out in the wavelength region of 500–2106 Å. The gold spectra were photographed at the National Institute of Standards and Technology, USA, on a 10.7 m normal incidence vacuum ...
Aashna Zainab   +4 more
doaj   +1 more source

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