Results 91 to 100 of about 8,356 (263)

Cool Cosmos: Infrared Astronomy Tutorial

, 2009
This Web site includes the following sections: Discovery of Infrared; What is Infrared?; Infrared Astronomy; Atmospheric Windows; Near, Mid & Far Infrared; IR Astronomy Timeline; Background & Technology; The Infrared Universe; Infrared Spectroscopy; News
NASA IPAC/CALTECH
core  

Astronomy with integral field spectroscopy:: observation, data analysis and results [PDF]

, 2001
With a new generation of facility instruments being commissioned for 8 metre telescopes, integral field spectroscopy will soon be a standard tool in astronomy, opening a range of exciting new research opportunities.
Turner, James Edmund Henry
core  

A High-resolution K-band Spectral Atlas of Massive Stars

The Astronomical Journal
A high-resolution (∼45,000), high signal-to-noise (>100) K -band spectral atlas of massive stars is presented. It includes 81 stars consisting of known optical standards, spanning spectral and luminosity subclasses from O2 to O9, and supergiant ...
V. M. Kalari, W. D. Vacca
doaj   +1 more source

Tailoring the Melting and Glass Transition Behavior of Zeolitic Imidazolate Frameworks via Ammonium Halide Salts

Small, EarlyView.
Ammonium halide salts serve as inorganic modifiers that lower the melting and glass transition temperatures of zeolitic imidazolate frameworks, enabling centimeter‐scale hybrid glasses and melt processing of otherwise unmeltable ZIF‐8. In situ imaging and pair distribution function analysis reveal salt infiltration, Zn─N bond disruption, and Zn–halide ...
Fengming Cao, Søren S. Sørensen, Anders K. R. Christensen, Xuan Ge, Martin A. Karlsen, Giulio Monaco, Lothar Wondraczek, Morten M. Smedskjaer   +7 more
wiley   +1 more source

Visual and Near-infrared Astronomy

, 2022
The first non-electromagnetic messengers from space were discovered in the early 20th century, but it is only now that multimessenger astronomy is coming into its own.
Gurovich, Sebastian, Filipovic, Miroslav, Payne, Jeffrey L   +2 more
core  

The use of thermal imaging to assess heat generation during dental implant bed preparation in the presence of a surgical guide with an incorporated coolant channel

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study evaluates the thermodynamic benefits of including an irrigation fluid channel in the design of surgical guides used for dental implant site drilling. Materials and Methods Two types of guides suitable for hosting artificial bone plates that mimic the mechanical properties of human alveolar bone were designed: a classical ...
Robert‐Angelo Tuce, Vasile Pupăzan, Monica Neagu, Stelian Arjoca, Adrian Neagu   +4 more
wiley   +1 more source

HgCdTe Apd Arrays for Astronomy: Natural Guide Star Wavefront Sensing and Space Astronomy. [PDF]

, 2018
This dissertation describes work I have conducted over ve academic years 2013/14 through 2017/18 as a NASA Space Technology Research Fellow at the University of Hawai'i Institute for Astronomy.
Atkinson, Dani E.
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Superprism phenomena in planar photonic crystals

, 2010
We utilize the anomalous dispersion of planar photonic crystals near the dielectric band edge to control the wavelength-dependent propagation of light. We typically observe an angular swing of up to 10degrees as the input wavelength is changed from 1290 ...
Wu, L, Krauss, Thomas Fraser, Karle, T, Mazilu, M   +3 more
core   +1 more source

First Daytime Near-infrared Photometric Observations at Antarctic Dome A

The Astronomical Journal
Located at the highest point on the Antarctic Plateau’s ice sheet, Dome A is generally believed to be one of the best places on Earth for nighttime astronomy in the optical and near-infrared (NIR) bands.
Chenwei Yang, Tuo Ji, Zhengyang Li, Jiannan Cong, Chao Chen, Michael C. B. Ashley, Zhixu Wu, Haimeng Li, Yuhan Luo, Liang Xi, Yipeng Zhou, Yaqi Zhao, Xingyu Zhou, Lei Hao, Zhongping Zhang, Hongyan Zhou, Peng Jiang   +16 more
doaj   +1 more source

Visible, near‐, and thermal infrared spectra of asteroid Bennu samples: Relationship to and implications for remote sensing of carbonaceous asteroids

Meteoritics &Planetary Science, EarlyView.
Abstract Remote spectroscopy is used to characterize the mineralogy and infer the history of planetary bodies. Carbonaceous asteroids, such as B‐type (101955) Bennu, represent the earliest stages of planet formation. B types have a blue (negative) spectral slope and comprise <5% of asteroids.
V. E. Hamilton, E. A. Cloutis, R. E. Milliken, P. Haenecour, D. R. Golish, K. J. Domanik, T. J. McCoy, L. P. Keller, A. A. Simon, H. H. Kaplan, C. A. Goodrich, S. A. Sandford, D. Applin, T. Hiroi, D. H. Hill, N. G. Lunning, F. M. McCubbin, S. A. Eckley, C. J. Snead, E. H. Blumenfeld, J. E. Aebersold, C. Schultz, N. Bowles, K. A. Shirley, S. S. Russell, J. J. Barnes, T. J. Zega, D. N. DellaGiustina, A. J. Ryan, D. P. Glavin, J. P. Dworkin, H. C. Connolly Jr., D. S. Lauretta   +32 more
wiley   +1 more source