Results 51 to 60 of about 2,644 (226)

Modeling the Detectability of Energetic Heliospheric Ions at Pluto During the New Horizons Flyby

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract We investigate the detectability of heliospheric helium ions at energies up to 100 keV by the New Horizons (NH) spacecraft during its flyby through Pluto's induced magnetosphere. The Pluto Energetic Particle Spectrometer Science Investigation energetic ion detector observed a reduction in their flux by an order of magnitude as the spacecraft ...
Randall T. Ruch, Sven Simon, Peter Kollmann, C. Michael Haynes   +3 more
wiley   +1 more source

Towards a Measurement of the Primordial Helium Isotope Ratio

The Astrophysical Journal
We report the discovery of two metastable neutral helium (He I *) absorbers in the Milky Way, and use the upgraded CRyogenic InfraRed Echelle Spectrograph (or CRIRES) on the Very Large Telescope to determine the helium isotope ratio, ^3 He/ ^4 He, along ...
Ryan J. Cooke, James W. Johnson, Pasquier Noterdaeme, Max Pettini, Louise Welsh, Aldric Wong, Céline Péroux   +6 more
doaj   +1 more source

High-velocity interstellar absorption associated with the supernova remnant W28

, 2020
We present an analysis of moderately high resolution optical spectra obtained for the sight line to CD-23 13777, an O9 supergiant that probes high velocity interstellar gas associated with the supernova remnant W28.
Ritchey, Adam M.
core   +1 more source

Ryugu reference project: Recommendations from the measurement definition team

Meteoritics &Planetary Science, Volume 61, Issue 5, Page 819-848, May 2026.
Abstract Sample return missions play a significant role in planetary science by providing pristine extraterrestrial materials. JAXA's Hayabusa2 and NASA's OSIRIS‐REx missions have returned samples from the C‐type asteroids Ryugu and Bennu, respectively. The chemical and mineralogical compositions of these samples closely resemble those of CI chondrites,
Tetsuya Yokoyama, Guillaume Avice, Henner Busemann, Nicolas Dauphas, Daniel P. Glavin, Ashley J. King, Thorsten Kleine, Katharina Lodders, Frederic Moynier, Maria Schönbächler, Yoshinori Takano, Kun Wang, Hikaru Yabuta, Yuma Enokido, Ryota Fukai, Shogo Tachibana, Tomohiro Usui   +16 more
wiley   +1 more source

Spatially Resolved Comparison of SFRs from UV and Hα in GASP Gas-stripped Galaxies

The Astrophysical Journal
Star formation rates (SFRs) in galaxies offer a view of various physical processes across them, and are measured using various tracers, such as H α and ultraviolet (UV).
Neven Tomičić, Ariel Werle, Benedetta Vulcani, Alessandro Ignesti, Alessia Moretti, Anna Wolter, Koshy George, Bianca M. Poggianti, Marco Gullieuszik   +8 more
doaj   +1 more source

Absorption-line Observations of and CO in Sight Lines Toward the Vela and W28 Supernova Remnants

The Astrophysical Journal, 2023
Supernova remnants act as particle accelerators, providing the cosmic-ray protons that permeate the interstellar medium and initiate the ion–molecule reactions that drive interstellar chemistry. Enhanced fluxes of cosmic-ray protons in close proximity to
Nick Indriolo
doaj   +1 more source

Strong absorption by interstellar hydrogen fluoride: Herschel/HIFI observations of the sight-line to G10.6-0.4 (W31C)

, 2010
International audienceWe report the detection of strong absorption by interstellar hydrogen fluoride along the sight-line to the submillimeter continuum source G10.6-0.4 (W31C).
Giesen, T., Boulanger, F., Phillips, T.G., Teyssier, D., Neufeld, D.A., Phillips, T. G., Gupta, H., Hennebelle, P., Sonnentrucker, P., Coutens, A., Joblin, C., Hily-Blant, Pierre, B. Mookerjea, Gupta, H.,, Pearson, T. J., S. Schlemmer, Vastel, C., Monje, Raquel, E. Dartois, Menten, K.M., Menten, K. M., M. Gerin, H. Gupta, P. Hily-Blant, Schlemmer, S., Bell, T., Cernicharo, J., Pearson, Justin, Persson, Carina, E. Falgarone, P. Sonnentrucker, M. Kazmierczak, P. Planesas, J. Pearson, D. Teyssier, Morris, P., J. H. Black, F. Boulanger, P. Hennebelle, Gerin, M., Hily-Blant, P., Persson, C., R. Liseau, Kolos, R., P. Cais, Krelowski, J., Plume, R., T. G. Phillips, T. Giesen, Yu, S., M. Schmidt, Lis, D. C., Liseau, Ren\ue9, Kazmierczak, M., C. Gry, C. Persson, Perault, M., Planesas, P., J. Stutzki, Gupta, H., C., Black, John H, Cais, Ph., Neufeld, D. A., Goldsmith, P. F., R. Plume, Monje, R., P. F. Goldsmith, Caux, E., Salez, M., J. R. Goicoechea, P. Encrenaz, Martin-Pintado, J., A. Coutens, R. Monje, Black, J. H., Dartois, E., Geballe, Thomas, Gry, C., de Luca, M., Bell, T. A., T. R. Geballe, M. De Luca, Falgarone, E., E. Caux, Goicoechea, J. R., Lis, D., Cais, P., B. Godard, D. C. Lis, J. Martín-Pintado, T. Bell, K. M. Menten, Godard, B., Mookerjea, B., M. Perault, J. Cernicharo, Liseau, R., Geballe, T. R., Schmidt, M., D. A. Neufeld, S. Yu, M. Salez, R. Kołos, Goldsmith, P.F., Herbst, E., Encrenaz, P., E. Herbst, Stutzki, J., P. Morris, C. Vastel, J. Krełowski, C. Joblin   +111 more
core   +1 more source

Aliphatic hydrocarbon content of interstellar dust

, 2020
The mid-IR spectrum of the interstellar medium contains both aromatic and aliphatic hydrocarbon features. These are generally attributed to carbonaceous dust.
Günay B., Burton M.G., Schmidt T.W., Rawal A.   +3 more
core   +1 more source

Spectroscopic Investigation of Thioacrolein by Variational and Perturbational Approaches

Journal of Computational Chemistry, Volume 47, Issue 10, 15 April 2026.
The vibrational and rotational spectra of trans and cis‐thioacrolein were studied by high levels of electronic and vibrational structure theory. Comparisons with experimental results are provided for several molecular quantities. ABSTRACT The vibrational spectra of trans and cis‐thioacrolein have been studied by 2nd order vibrational perturbation ...
Guntram Rauhut
wiley   +1 more source

Sloan Digital Sky Survey IV MaStar: Quantification and Abatement of Interstellar Absorption in the Largest Empirical Stellar Spectral Library

The Astrophysical Journal
We assess the impact of Ca ii λ λ 3934, 3969 and Na i λ λ 5891, 5897 absorption arising in the interstellar medium (ISM) on the Sloan Digital Sky Survey-IV MaNGA Stellar Library (MaStar) and produce corrected spectroscopy for 80% of the 24,162-star ...
Kate H. R. Rubin, Kyle B. Westfall, Claudia Maraston, Daniel Thomas, Renbin Yan, J. Christopher Howk, Erick Aguirre, Kaelee S. Parker, David R. Law   +8 more
doaj   +1 more source