Results 11 to 20 of about 1,845,174 (287)

Broadband spectroscopy of astrophysical ice analogues

Astronomy & Astrophysics
Context. Knowledge of the terahertz (THz) - infrared (IR) optical properties of astrophysical ices is important for understanding the dust continuum emission and radiative transfer in dense and cold interstellar environments.
Gavdush A. A., Ribeiro F., Matveishina M. K., Vyjidak A., Kruczkiewicz F., Komandin G. A., Garnov S. V., Zaytsev K. I., Ivlev A. V., Grassi T., Giuliano B. M., Caselli P.   +11 more
doaj   +8 more sources

Ice sheet extent and early deglacial history of the southwestern sector of the Greenland ice sheet [PDF]

, 2009
The offshore and coastal geomorphology of southwest Greenland records evidence for the advance and decay of the Greenland Ice Sheet during the Last Glacial Maximum.
Long, A.J., Xu, S., Schnabel, C., Simpson, M.J.R., Huybrechts, P., Roberts, D.H., Davies, B.J.   +6 more
core   +9 more sources

Ice nucleation under cirrus cloud conditions [PDF]

, 2012
Cirrus are thin upper tropospheric clouds that are composed entirely of ice particles. Due to their extensive coverage of the Earth’s surface, they have a significant impact on the Earth’s radiative balance.
Wilson, Theodore W
core   +6 more sources

Infrared Spectroscopy and Photochemistry of Anthracoronene in Cosmic Water Ice [PDF]

ACS Earth and Space Chemistry, 2022
We present a laboratory study of the polycyclic aromatic hydrocarbon (PAH) anthracoronene (AntCor, C36H18) in simulated interstellar ices in order to determine its possible contribution to the broad infrared absorption bands in the 5–8 μm wavelength interval.
Korsmeyer, Julie M., Ricca, Alessandra, Cruz-Diaz, Gustavo A., Roser, Joseph E., Mattioda, Andrew L.   +4 more
openaire   +3 more sources

Development of a Bioaerosol single particle detector (BIO IN) for the Fast Ice Nucleus CHamber FINCH [PDF]

, 2010
In this work we present the setup and first tests of our new BIO IN detector. This detector was constructed to classify atmospheric ice nuclei (IN) for their biological content. It is designed to be coupled to the Fast Ice Nucleus CHamber FINCH.
U. Bundke, B. Nillius, Bundke, Ulrich, H. Bingemer, Jaenicke, Ruprecht, Reimann, Bernd, B. Reimann, R. Jaenicke, Bingemer, Heinz, Nillius, Bjorn   +9 more
core   +2 more sources

VLT Spectroscopy of Blue Supergiants in IC 1613 [PDF]

The Astrophysical Journal, 2007
We present multi-object spectroscopy of young, massive stars in the Local Group galaxy IC 1613. We provide the spectral classification and a detailed spectral catalog for 54 OBA stars in this galaxy. The majority of the photometrically selected sample is composed of B- and A-type supergiants. The remaining stars include early O-type dwarfs and the only
Bresolin, Fabio, Urbaneja, Miguel A., Gieren, Wolfgang, Pietrzynski, Grzegorz, Kudritzki, Rolf-Peter   +4 more
openaire   +2 more sources

Fluctuation spectroscopy of surface melting of ice with and without impurities [PDF]

Physical Review E, 2019
Water, in its three phases, is ubiquitous, and the surface properties of ice is important to clarifying the process of melting, as well as to various other fields, including geophysics. As such, the subject has been studied both theoretically and experimentally, for over a hundred years, while being an active field of research today.
Mitsui, Takahisa, Aoki, Kenichiro
openaire   +3 more sources

Solid-state NMR spectroscopy on complex biomolecules [PDF]

, 2010
Biomolecular applications of NMR spectroscopy are often merely associated with soluble molecules or magnetic resonance imaging. However, since the late 1970s, solid-state NMR (ssNMR) spectroscopy has demonstrated its ability to provide atomic-level ...
NMR Spectroscopy, Baldus, M., Cukkemane, A.A., Abhishek Cukkemane, Renault, M.A.M., Sub NMR Spectroscopy, Marie Renault, Marc Baldus   +7 more
core   +1 more source

Proton Ordering of Cubic Ice Ic: Spectroscopy and Computer Simulations

The Journal of Physical Chemistry C, 2014
Several proton-disordered crystalline ice structures are known to proton order at sufficiently low temperatures, provided that the right preparation procedure is used. For cubic ice, ice Ic, however, no proton ordering has been observed so far. Here, we subject ice Ic to an experimental protocol similar to that used to proton order hexagonal ice.
Geiger P, Dellago C, Macher M, Franchini C, Kresse G, Bernard J, Stern JN, Loerting T   +7 more
openaire   +3 more sources

AKARI NIR spectroscopy of interstellar ices [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractThe Infrared Camera (IRC) onboard AKARI has a near-infrared (2--5μm) spectroscopic capability with high sensitivity that allows us to study the major ice components in various objects. In particular, H2O and CO2 ice absorption features have been detected towards nearby galaxies, including several young stellar objects (YSOs) in the Large ...
Takashi Onaka, Tamami I. Mori, Itsuki Sakon, Fumihiko Usui, Ronin Wu, Takashi Shimonishi   +5 more
openaire   +1 more source