Results 31 to 40 of about 1,348,566 (296)
Revealing excess protons in the infrared spectrum of liquid water [PDF]
Scientific Reports, 2020 AbstractThe most common species in liquid water, next to neutral $$\hbox {H}_2\hbox {O}$$H2O molecules, are the $$\hbox {H}_3\hbox {O}^+$$H3O+ and $$\hbox {OH}^-$$OH- ions. In a dynamic picture, their exact concentrations depend on the time scale at which these are probed.
Artemov, V. G. +5 more
openaire +3 more sources
Infrared excess in semi-regular variables in the Magellanic Clouds
EPJ Web of Conferences, 2017 Following up on our recent work we are investigating if Type II Cepheids could be “hiding” in the sample of stars classified by the OGLE team as long-period variables.
Groenewegen Martin A.T. +1 more
doaj +1 more source
Gaia white dwarfs with infrared excess
Astronomy & AstrophysicsContext. The presence of infrared (IR) excess flux observed in white dwarfs is related to the existence of debris disks or substellar companions. These systems provide important clues in studies of extrasolar planetary material and binary evolution ...
Murillo-Ojeda R. +3 more
doaj +1 more source
Mid-infrared supermirrors with finesse exceeding 400 000
Nature Communications, 2023 For trace gas sensing and precision spectroscopy, optical cavities incorporating low-loss mirrors are indispensable for path length and optical intensity enhancement.
Gar-Wing Truong +11 more
doaj +1 more source
Far-infrared Excesses in Classical Be Stars [PDF]
International Astronomical Union Colloquium, 2000 AbstractA sample of Be stars with large far-infrared excesses detected by IRAS is selected and their high-resolution IRAS images are examined. The far-infrared emission from most of them is marginally extended and is associated with the optical sources.
A.S. Miroshnichenko, K.S. Bjorkman
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Dust formation of Be stars with large infrared excess
, 2010 Classical Be stars, in addition to their emission-line spectra, are associated with infrared excess which is attributable to free-free emission from ionized gas. However, a few with exceptionally large near-infrared excess, namely with J–H, and H–Ks both
Wen-Ping Chen, Chien-De Lee
core +1 more source
Infrared and Radio Excesses of Late-Type Stars [PDF]
Symposium - International Astronomical Union, 1987 The IRAS catalogues have been searched for cool (G,K,M) giant and supergiant stars to investigate the occurrence of circumstellar (C/S)silicate dust, revealed by its emission features at 9.7 and 18μm. Low Resolution Spectrograph (LRS) spectra covering the 7-23μm range were used, plus the 60 and 100μm photometric points.
openaire +1 more source
Near-infrared excess and emission characteristics of classical Be stars
, 2010 Classical Be (CBe) stars are fast-rotating emission-line stars associated with infrared excess often attributed to plasma free-free emission. A few with exceptionally large near-infrared excess, namely with (J–H) and (H–Ks) both greater than 0.6 mag ...
Wen-Ping Chen +2 more
core +1 more source
, 2022 Supplemental material for Metaheuristic algorithms in the visible and near infrared spectra to detect excess nitrogen content in tomato plants by Razieh Pourdarbani, Sajad Sabzi, Mohammad H Rohban, Ginés García-Mateos, José Miguel Molina-Martínez ...
Juan I Arribas (12676648) +6 more
core +1 more source
Anomalous excess noise behavior in thick Al0.85Ga0.15As0.56Sb0.44 avalanche photodiodes
Scientific Reports, 2023 Al0.85Ga0.15As0.56Sb0.44 has recently attracted significant research interest as a material for 1550 nm low-noise short-wave infrared (SWIR) avalanche photodiodes (APDs) due to the very wide ratio between its electron and hole ionization coefficients ...
Harry I. J. Lewis +10 more
doaj +1 more source