Results 41 to 50 of about 833,890 (231)

Cis–Trans Rotational Isomerism of Formic Acid, Sulfur, and Selenium Analogues and Their Dimers: Chemical Kinetics Under Interstellar Conditions

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT We present chemical kinetic rate constants for the cis to trans isomerisation or rotamerization of monomeric seleno‐, thio‐, and formic acids and that of three of their dimeric species, based on variational transition state theory and multidimensional tunneling calculations in the gas‐phase, from 10 K to 300 K. These provide, firstly, reliable
Judith Wurmel, John M. Simmie
wiley   +1 more source

The S4G-WISE View of Global Star Formation in the Nearby Universe

The Astrophysical Journal
In this work, we present source-tailored Wide-field Infrared Survey Explorer (WISE) mid-infrared photometry (at 3.4, 4.6, 12, and 23 μ m) of 2812 galaxies in the extended Spitzer Survey of Stellar Structure in Galaxies sample, and characterize the mid ...
M. E. Cluver, T. H. Jarrett, D. A. Dale, J.-D. T. Smith, M. J. I. Brown, W. van Kempen, E. Lengerer, R. Incoll, C. Davey, R. Holloway, J. Cameron, K. Sheth   +11 more
doaj   +1 more source

Post‐flight assessment of the OSIRIS‐REx Sample Return Capsule (SRC) for organic and other potential contaminants

Meteoritics &Planetary Science, EarlyView.
Abstract Regolith samples from the carbonaceous asteroid Bennu were stowed and delivered to Earth in the OSIRIS‐REx spacecraft's Sample Return Capsule (SRC). We applied multiple analytical techniques to study the components of the post‐flight SRC, with a focus on assessing the conditions and any contaminants to which the Bennu samples were exposed ...
Scott A. Sandford, Jason P. Dworkin, Kevin Righter, Feargus A. J. Abernethy, Romain Alosius, José C. Aponte, James Ball, Eve L. Berger, Denise K. Buckner, Henner Busemann, Simon J. Clemett, George Cody, Jamie Elsila, Dionysis I. Foustoukos, Ian A. Franchi, Daniel P. Glavin, Monica M. Grady, Heather V. Graham, Philipp R. Heck, Amy E. Hofmann, Yongsong Huang, Bumsoo Kim, Daniela Krietsch, Nicole G. Lunning, Colin Maden, Hannah L. McLain, Angel Mojarro, Michel Nuevo, Philippe Schmitt‐Kopplin, Ewerton Santos, Maria Schönbächler, Christopher J. Snead, Kathie L. Thomas‐Keprta, Alexander B. Verchovsky, Harold C. Connolly Jr., Dante S. Lauretta   +35 more
wiley   +1 more source

The nature and origin of disky elliptical galaxies [PDF]

, 2002
The observational trend that disky elliptical galaxies exhibit younger luminosity- weighted ages than boxy ellipticals is investigated. The presence of a possible young stellar disk embedded in these galaxies is explored by comparing kinematics derived ...
McDermid, Richard Morgan
core  

Mid‐Infrared Selection of Active Galaxies [PDF]

The Astrophysical Journal, 2005
13 pages, 3 figures; submitted to the Astrophysical Journal ...
Stern, Daniel, Eisenhardt, Peter, Gorjian, Varoujan, Kochanek, Christopher S., Caldwell, Nelson, Eisenstein, Daniel, Brodwin, Mark, Brown, Michael J. I., Cool, Richard, Dey, Arjun, Green, Paul, Jannuzi, Buell T., Murray, Stephen S., Pahre, Michael A., Willner, S. P.   +14 more
openaire   +2 more sources

The Crystal Structures of High‐ and Low‐Temperature Silver Pyrophosphate: Structural Instability and Its Consequences

Zeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 15, 1 October 2026.
The crystal structures of the high‐temperature and low‐temperature phases of silver pyrophosphate are reported. The structural results are complemented by thermal analysis, vibrational and 31P‐MAS‐NMR spectroscopy studies, and density functional theory calculations.
Matthias Weil, Bertold Stöger, Enrique J. Baran, Ekkehard Füglein, Robert Glaum, Eva‐Maria Hammer, Branimir Raguž, Thomas Bredow, Eugen Libowitzky   +8 more
wiley   +1 more source

Near-infrared spectroscopy of starburst galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
19 pages, Latex, 12 encapsulated Postscript figures, Accepted for publication in ...
Coziol, R., Doyon, R., Demers, S.
openaire   +2 more sources

Sparks: The Magellan/FIRE Survey from Starburst to Post-starburst

The Astrophysical Journal
Rapid transitions from starburst to quiescence constitute a key evolutionary pathway in galaxy formation. Post-starburst galaxies trace this brief phase, exhibiting optical spectra dominated by intermediate-age stellar populations with strong Balmer ...
Dalya Baron, David J. Setton, Yilun Ma, J. X. Prochaska, Gabriela Canalizo, Ric Davies, Jenny E. Greene, Dieter Lutz   +7 more
doaj   +1 more source

Direct HST Dust Lane Detection in Powerful Narrow-Line Radio Galaxies

Frontiers in Astronomy and Space Sciences, 2017
We present the analysis of near-infrared Hubble Space Telescope imaging of 10 Fanaroff Riley II powerful radio galaxies at low redshift (0.03 < z < 0.11) optically classified as narrow-line radio galaxies.
Edgar A. Ramírez, Itziar Aretxaga, Clive N. Tadhunter, Enrique Lopez-Rodriguez, Enrique Lopez-Rodriguez, Enrique Lopez-Rodriguez, Chris Packham, Chris Packham   +7 more
doaj   +1 more source

Nurses' Visual Attention During Initial Observation of Patients With Suspected Pneumonia: An Observational Pupillometry Study

Japan Journal of Nursing Science, Volume 23, Issue 4, October 2026.
ABSTRACT Aim Observation requires selective attention to visual information acquired through gaze. Measuring pupil diameter, an index of attention, we examined skilled and novice nurses during the initial assessment of a patient urgently admitted with suspected community‐acquired pneumonia.
Shoya Kamijo, Shinji Matsutani, Eijun Nakayama, Naoya Ohtani   +3 more
wiley   +1 more source