Results 41 to 50 of about 200,551 (195)

Near-infrared echelle-AOTF spectrometer ACS-NIR for the ExoMars Trace Gas Orbiter

, 2015
International audienceThe near-Infrared echelle-AOTF spectrometer is one channel of the Atmospheric Chemistry Suite (ACS) package dedicated for the studies of the Martian atmosphere on board ExoMars Trace Gas Orbiter planned for launch in 2016.
Oleg Korablev, Trokhimovsky, Alexander, Patrakeev, Andrei, Ilia Dziuban, Fedorova, Anna, Stepanov, Alexander V., Alexander Trokhimovskiy, Andrei Patrakeev, Anna Fedorova, Dziuban, Ilya, Montmessin, Franck, Alexander V. Stepanov, Franck Montmessin, Andrei Y. Titov, Korablev, Oleg, Kalinnikov, Yurii K., Titov, Andrei Y., Yurii K. Kalinnikov   +17 more
core   +1 more source

THE OPTICAL HIGH-RESOLUTION SPECTROSCOPY AS A METHOD OF X-RAY BINARY CYG X-1 INVESTIGATION

Odessa Astronomical Publications, 2017
Recently a lot of photometric effects were revealed during the investigation of the first can- didate to black hole Cyg X-1. Besides of orbital vari- ations different kinds of flares, so-called precession period 147/294 days and a significant correlation
E. A. Karitskaya, A. V. Bondar, N. G. Bochkarev, G. A. Galazutdinov, F. A. Musaev, A. A. Sapar   +5 more
doaj   +1 more source

The Kepler Giant Planet Search. I. A Decade of Kepler Planet-host Radial Velocities from W. M. Keck Observatory

The Astrophysical Journal Supplement Series, 2023
Despite the importance of Jupiter and Saturn to Earth’s formation and habitability, there has not yet been a comprehensive observational study of how giant exoplanets correlate with the architectural properties of close-in, sub-Neptune-sized exoplanets ...
Lauren M. Weiss, Howard Isaacson, Andrew W. Howard, Benjamin J. Fulton, Erik A. Petigura, Daniel Fabrycky, Daniel Jontof-Hutter, Jason H. Steffen, Hilke E. Schlichting, Jason T. Wright, Corey Beard, Casey L. Brinkman, Ashley Chontos, Steven Giacalone, Michelle L. Hill, Molly R. Kosiarek, Mason G. MacDougall, Teo Močnik, Alex S. Polanski, Emma V. Turtelboom, Dakotah Tyler, Judah Van Zandt   +21 more
doaj   +1 more source

Nanoscale Ordering of Magnetosomes Under the Influence of a Magnetic Field Investigated by Small‐Angle X‐Ray Scattering

Small Structures, Volume 7, Issue 6, June 2026.
Recently, the synthetic Rhodospirillum rubrum ‘magneticum’ has been shown to enable the light‐driven production of magnetosomes (MAGs) in high yields. These membrane‐enveloped magnetic nanoparticles represent promising alternatives to their chemically synthesized analogs for many applications in the biotechnological and biomedical field.
Dieter Skroblin, Sabine Rosenfeldt, Simon Markert, Jakob J. Beierl, Dirk Schüler, Anna S. Schenk, Frank Mickoleit, Christian Gollwitzer   +7 more
wiley   +1 more source

AOTF-echelle spectrometer for air-ICP-AES continuous emission monitoring of heavy metals and actinides [PDF]

, 1999
A spectrometer system consisting of a quartz acousto-optic tunable filter (AOTF) and an echelle grating has been assembled and tested for ICP-AES continuous emission monitoring of heavy metal and actinide elements in stack exhaust offgases introduced ...
Baldwin, David, Eckels, David, Miller, George, Zamzow, Daniel   +3 more
core  

Optical System Design of an Echelle Spectrometer Based on a Digital Micromirror Device

Optics
The echelle spectrometer utilizes an echelle grating as the primary dispersive element, combined with a prism or planar grating for cross-dispersion, to form a two-dimensional spectral image on an area-array Charge-Coupled Device (CCD).
Jia Liu, Ruikai Zhang, Yangdong Zhou, Dewu Li, Yixin Wang, Lu Yin   +5 more
doaj   +1 more source

The Great Cold Spot in Jupiter's upper atmosphere

Geophysical Research Letters, 2017
Past observations and modeling of Jupiter's thermosphere have, due to their limited resolution, suggested that heat generated by the aurora near the poles results in a smooth thermal gradient away from these aurorae, indicating a quiescent and diffuse ...
Tom S. Stallard, Henrik Melin, Steve Miller, Luke Moore, James O'Donoghue, John E. P. Connerney, Takehiko Satoh, Robert A. West, Jeffrey P. Thayer, Vicki W. Hsu, Rosie E. Johnson   +10 more
doaj   +1 more source

Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS

The Canadian Journal of Chemical Engineering, Volume 104, Issue 5, Page 2206-2224, May 2026.
Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa, Jildimara de Jesus Santana, Viviane de Oliveira Campos, Felipe Fernandes Barbosa, Gregory S. Patience   +4 more
wiley   +1 more source

Long‐Term Variations of Jupiter's Stratospheric Planetary Waves Modulated by the Quasi‐Quadrennial Oscillation

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Planetary wave activity on Jupiter has been consistently observed since the Voyager mission. This study uses NASA Infrared Telescope Facility 7.6–7.9 μm long‐term ground‐based observations from 1984 to 2011 and global maps from the Cassini flyby in November and December 2000 to analyze Jupiter's stratospheric planetary wave activity.
Jialin Zhang, Dexin Lai, Tao Li, Chengyun Yang, Xin Fang, Yihuang Tang, Yuming Wang   +6 more
wiley   +1 more source

New Climatology of Martian Water Vapor Column Abundance Derived From NOMAD LNO Nadir Observations Over Martian Years 34–38

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract We present a new climatology of Martian water vapor column abundance derived from nadir dayside observations made by the Nadir and Occultation for MArs Discovery (NOMAD) instrument suite as part of the ExoMars Trace Gas Orbiter (TGO) mission. H2O vertical column densities are retrieved by applying an Optimal Estimation inversion scheme to the ...
F. Hendrick, S. Robert, I. Thomas, S. Aoki, F. Daerden, L. Trompet, L. Neary, J. Erwin, Y. Willame, A. Piccialli, Z. Flimon, B. Ristic, M. R. Patel, G. Bellucci, M. A. López‐Valverde, M. D. Smith, A. C. Vandaele   +16 more
wiley   +1 more source