Results 61 to 70 of about 7,202 (193)

The Stellar Parameters and Evolutionary State of the Primary in the d'-Symbiotic System StH\alpha190 [PDF]

, 2001
We report on a high-resolution, spectroscopic stellar parameter and abundance analysis of a d' symbiotic star: the yellow component of StH\alpha190. This star has recently been discovered, and confirmed here, to be a rapidly rotating (vsini=100 km/s ...
Claudio B. Pereira, Jeffries R. D., Katia Cunha, Kaufer A., Schaerer D., Schmid H. M., Smith V. V., Verne V. Smith, Webster B. L.   +8 more
core   +2 more sources

Bubbling Water‐Treating DBD Plasma Device Optimization Using Experimental and Computational Methods

Plasma Processes and Polymers, Volume 22, Issue 5, May 2025.
A dry air atmospheric pressure volume dielectric barrier discharge is employed to fix nitrogen in water. Producing nitrate for use as nitrogen fertilizer is the primary motivation. A 0D chemistry model is developed and informed by the electrical, and geometric characteristics of the device and the plasma gas temperature.
Conner D. Robinson, Nicholas L. Sponsel, Katharina Stapelmann   +2 more
wiley   +1 more source

Characterization of a Gliding Arc Plasmatron for the Plasma Assisted Pyrolysis of Methane to Acetylene and Hydrogen

Plasma Processes and Polymers, Volume 22, Issue 3, March 2025.
This article explores the innovative use of a gliding arc plasmatron for methane pyrolysis, combining plasma diagnostics and gas stream analysis. By delving into plasma characteristics and the resulting product composition, it unveils the potential and the mechanisms of this technology for efficient hydrogen and acetylene production. ABSTRACT A gliding
Simon Böddeker, Jan Göricke, Bastian Kogelheide, Nikita Bibinov, Maximilian Purcel, Martin Muhler, Thomas Mussenbrock, Peter Awakowicz   +7 more
wiley   +1 more source

Asteroseismology of exoplanets host stars: the special case of $\iota$ Horologii (HD17051)

, 2006
{This paper presents detailed analysis and modelisation of the star HD17051 (alias $\iota$ Hor), which appears as a specially interesting case among exoplanet host stars.
Angulo, Bazot, Bazot, Bouchy, Brassard, Chereul, Favata, Flower, Gonzalez, Gonzalez, Gonzalez, Iglesias, Isotov, Israelian, Kupka, Lejeune, M. Laymand, Paquette, Perryman, Rogers, Roxburgh, Ryabchikova, S. Vauclair, Santos, Santos, Santos, Theado, Udry   +27 more
core   +3 more sources

What Produced the Ultraluminous Supernova Remnant in NGC 6946? [PDF]

, 1999
The ultraluminous supernova remnant (SNR) in NGC 6946 is the brightest known SNR in X-rays, ~1000 times brighter than Cas A. To probe the nature of this remnant and its progenitor, we have obtained high-dispersion optical echelle spectra.
Battinelli P., Blair W. P., Bryan C. Dunne, Caraveo P. A., D’Odorico S., Esteban C., Garcia-Segura G., Garcia-Segura G., Magnier E. A., Mills B. Y., Robert A. Gruendl, Schlegel E. M., You-Hua Chu   +12 more
core   +3 more sources

Supported Co‐Based Catalytic Systems for the Epoxidation of Terpenes Using O2 as Oxidant

European Journal of Inorganic Chemistry, Volume 28, Issue 5, February 12, 2025.
Cobalt‐based catalyst supported on SBA‐15, SBA‐16, commercial silica and carbon nanotubes were prepared, characterized and applied in the aerobic oxidation of terpenes. High conversions and selectivities could be achieved and the influence of the support, the nature of the substrate, the cobalt loading were investigated.
Meriem Rais, Jérémy Soulié, Claire Tendero, Jérôme Durand   +3 more
wiley   +1 more source

A Frequency Comb calibrated Solar Atlas

, 2013
The solar spectrum is a primary reference for the study of physical processes in stars and their variation during activity cycles. In Nov 2010 an experiment with a prototype of a Laser Frequency Comb (LFC) calibration system was performed with the HARPS ...
Esposito, M., Gonzalez Hernandez, J., Holzwarth, R., Hänsch, T., Lo Curto, G., Manescau, A., Molaro, P., Monai, S., Pasquini, L., Probst, R., Rebolo, R., Steinmetz, T., Udem, T., Wilken, T.   +13 more
core   +1 more source

Mutual Event Observations of Io's Sodium Corona [PDF]

, 2001
We have measured the column density profile of Io's sodium corona using 10 mutual eclipses between the Galilean satellites. This approach circumvents the problem of spatially resolving Io's corona directly from Io's bright continuum in the presence of ...
Barker, E. S., Bouchez, A. H., Brown, M. E., Burger, M. H., de Pater, I., Mallama, A., Schneider, N. M., Sheffer, Y., Trafton, L. M.   +8 more
core   +1 more source

Venus' O 5577 Å Oxygen Green Line: A Global Diffuse Proton‐Induced Aurora

Journal of Geophysical Research: Space Physics, Volume 130, Issue 2, February 2025.
Abstract The Venusian O(1S–1D) 5577 Å “oxygen green line” has been an enigmatic feature of the Venusian atmosphere since its first attempted observation by the Venera spacecraft. Its first detection in 1999 and subsequent detections point to a unique auroral phenomena.
Candace L. Gray, Kerstin Peter, Martin Pätzold, Silvia Tellmann, Tom Nordheim, Carl Schmidt, Nancy J. Chanover, Paul Withers   +7 more
wiley   +1 more source

High Resolution Spectroscopy of the high galactic latitude RV Tauri star CE Virginis

, 2004
Analysis of the surface composition of the suspected cool RV Tauri star CE Vir shows no systematic trend in depletions of elements with respect to condensation temperature.
Alcolea, Bacham E. Reddy, Barker, Dawson, Dawson, Drake, Garcia-Alvarez, García-Segura, Geiss, Geiss, Gingold, Giridhar, Giridhar, Giridhar, Giridhar, Goldsmith, Gonzalez, Gonzalez, Goswami, Henoux, Hinkle, Hobbs, Hoffleit, Jones, Jura, Lambert, Laming, Linsky, Lloyd Evans, Lodders, N. Kameswara Rao, Pascoli, Percy, Pollard, Preston, Rao, Rao, Reddy, Reddy, Schwadron, Van Winckel   +40 more
core   +1 more source