Results 11 to 20 of about 6,825 (205)

Upgrades to the MAVEN Echelle Data Reduction Pipeline: New Calibration Standard and Improved Faint Emission Detection Algorithm at Lyman‐α

Earth and Space Science, 2023
The Mars Atmosphere and Volatile Evolution (MAVEN) mission instrument suite includes an ultraviolet echelle spectrograph with high‐spectral resolution designed to resolve D and H Lyman‐α emissions.
M. Mayyasi, J. Clarke, J.‐L. Bertaux, J. Deighan, D. Bhattacharyya, M. Chaffin, S. Jain, N. Schneider, S. Curry   +8 more
doaj   +1 more source

Fast High Resolution Echelle Spectroscopy Of A Laboratory Plasma [PDF]

, 2006
An echelle diffraction grating and a multianode photomultiplier tube are paired to construct a high resolution (R=lambda/delta lambda approximate to 2.5x10(4)) spectrograph with fast time response for use from the UV through the visible.
Brown, Michael R., Cothran, C. D., Fung, Jerome, , \u2706, Schaffer, M. J.   +3 more
core   +3 more sources

Differentiation of Ecological Niches in Trophic Specialists From a Disturbed Lacustrine Ecosystem: Insights from the Sympatric Lake Tana Labeobarbs (Cyprinidae). [PDF]

Ecol Evol
Lake Tana harbors the world's most complex adaptive radiation of cyprinids in the world. Although trophic specialization has been proven to drive this diversification, the diet of endemics has been studied using only traditional stomach content analysis.
Esin EV, Kudryavtseva AD, Levin BA, Abdissa B, Hailu B, Shkil FN, Meyer A.   +6 more
europepmc   +2 more sources

Concept and optical design of the cross-disperser module for CRIRES [PDF]

, 2014
This is the peer reviewed version of the following article: Oliva, Ernesto, A. Tozzi, D. Ferruzzi, L. Origlia, A. Hatzes, R. Follert, T. Loewinger et al.
Anglada-Escude, G, Baade, D, Bristow, P, Delabre, B, Dorn, RJ, Ferruzzi, D, Follert, R, Gojak, D, Grunhut, J, Hatzes, A, Heiter, U, Hilker, M, Ives, DJ, Jung, Y, Kaeufl, HU, Kerber, F, Klein, B, Lizon, JL, Lockhart, M, Loewinger, T, Marquart, T, Oliva, E, Origlia, L, Pasquini, L, Paufique, J, Piskunov, N, Pozna, E, Reiners, A, Seemann, U, Smette, A, Smoker, J, Stempels, E, Tozzi, A, Valenti, E   +33 more
core   +2 more sources

Spectroscopic Orbits of Subsystems in Multiple Stars. IX

The Astronomical Journal, 2023
New spectroscopic orbits of inner subsystems in 14 hierarchies are determined from long-term monitoring with the optical echelle spectrometer, CHIRON.
Andrei Tokovinin
doaj   +1 more source

NEWS: the near-infrared Echelle for wideband spectroscopy [PDF]

, 2016
We present an updated optical and mechanical design of NEWS: the Near-infrared Echelle for Wide-band Spectroscopy (formerly called HiJaK: the High-resolution J, H and K spectrometer), a compact, high-resolution, near-infrared spectrometer for 5-meter ...
Hall, Zachary, Muirhead, Philip, Taylor, Brian, Veyette, Mark, Ye, Jimmy   +4 more
core   +2 more sources

Silicon Nitride/Silicon Dioxide Echelle Grating Spectrometer for Operation Near 1.55 μm

IEEE Photonics Journal, 2018
Here we use an electron beam lithography system to pattern an ${\rm{S}}{{\rm{i}}_{3}}{{\rm{N}}_{4}}{\rm{/Si}}{{\rm{O}}_{2}}$ echelle grating using silver as a reflector on the grating grooves.
Shengjie Xie, Yang Meng, Joss Bland-Hawthorn, Sylvain Veilleux, Mario Dagenais   +4 more
doaj   +1 more source

High-Resolution Compact On-Chip Spectrometer Based on an Echelle Grating With Densely Packed Waveguide Array

IEEE Photonics Journal, 2019
We design a 121-channel on-chip spectrometer based on an echelle grating with densely packed waveguide array on 220-nm silicon-on-insulator platform.
Keqi Ma, Kaixuan Chen, Ning Zhu, Liu Liu, Sailing He   +4 more
doaj   +1 more source

Improved Log(gf) Values for Lines of Ti I and Abundance Determinations in the Photospheres of the Sun and Metal-Poor Star HD 84937 (Accurate Transition Probabilities for Ti I) [PDF]

, 2013
New atomic transition probability measurements for 948 lines of Ti I are reported. Branching fractions from Fourier transform spectra and from spectra recorded using a 3 m echelle spectrometer are combined with published radiative lifetimes from laser ...
Cowan, John J., Guzman, A., Lawler, James E., Sneden, Christopher, Wood, M. P.   +4 more
core   +1 more source

KH 15D: A Spectroscopic Binary [PDF]

, 2004
We present the results of a high-resolution spectroscopic monitoring program of the eclipsing pre-main-sequence star KH 15D that reveal it to be a single-line spectroscopic binary.
Catrina M. Hamilton, Chabrier G., Christopher M. Johns-Krull, D'Antona F., Flaccomio E., Geoffrey W. Marcy, John Asher Johnson, William Herbst   +7 more
core   +4 more sources