Results 61 to 70 of about 6,825 (205)

Prospects of Stellar Abundance Studies from Near-IR Spectra Observed with the E-ELT

, 2010
In 2006 ESO Council authorized a Phase B study of a European AO-telescope with a 42 m segmented primary with a 5-mirror design, the E-ELT. Several reports and working groups have already presented science cases for an E-ELT, specifically exploiting the ...
Asplund, Battaglia, Battaglia, Bellazzini, Bensby, Bland-Hawthorn, Bosler, Bowen, Caffau, Cardelli, Carigi, Collet, Connes, Cunha, Del Burgo, Freytag, Gullieuszik, Gustafsson, Helmi, Hinkle, Höfner, Höfner, Israelian, Kaluzny, Kashikawa, Kaufer, Keller, Kormendy, Korn, Käufl, Lambert, Lambert, Letarte, Letarte, McLean, McSaveney, Meléndez, Meléndez, Meléndez, Meynet, Nishiyama, Nissen, Nissen, Olsen, Origlia, Origlia, Plez, Recio-Blanco, Reddy, Renzini, Rich, Ryde, Ryde, Ryde, Ryde, Ryde, Ryde, Ryde, Ryde, Ryde, Ryde, Shetrone, Shetrone, Shetrone, Short, Silk, Spinrad, Takada-Hidai, Tolstoy, Tolstoy, Tolstoy, Tolstoy, Tomkin, Tsuji, Wahlin   +74 more
core   +1 more source

An IR Study of the Velocity Structure of the Cometary Compact HII region G29.96-0.02 [PDF]

, 1996
We have mapped the velocity structure of the cometary compact HII region G29.96-0.02 using long-slit echelle spectra of the HI Br gamma line. This technique detects line emission over a much wider area at the necessary spatial resolution compared to ...
Hoare, Melvin, Lumsden, Stuart
core   +3 more sources

Dry Reforming of Methane Over Ceria Supported Catalysts Produced by Direct Impregnation with Leachate Solution from Spent Diesel Auto‐Catalysts

ChemCatChem, Volume 17, Issue 22, November 24, 2025.
The Pt‐containing leachate solution obtained by a hydrometallurgical recovery route of spent diesel oxidation catalysts was successfully used to fabricate Pt/CeO2 catalysts. Dry reforming of methane and reverse water gas shift tests showed good conversion efficiencies, with negligible carbon deposition after ToS experiments of several hours.
Alessio Varotto, Umberto Pasqual Laverdura, Silvano Del Gobbo, Nicola Lisi, Francesco Bozza, Laura Silvestri, Anastasia Maria Moschovi, Iakovos Yakoumis, Zara Cherkezova‐Zheleva, Marta Feroci, Maria Luisa Grilli   +10 more
wiley   +1 more source

The kinematics of the most oxygen-poor planetary nebula PN G135.9+55.9

, 2003
PN G135.9+55.9 is a compact, high excitation nebula that has been identified recently as the most oxygen-poor halo planetary nebula. Given its very peculiar characteristics and potential implications in the realms of stellar and Galactic evolution ...
Echevarria, J., Lopez, J. A., Richer, M. G., Stasinska, G., Steffen, W., Tovmassian, G.   +5 more
core   +1 more source

Lines and continuum sky emission in the near infrared: observational constraints from deep high spectral resolution spectra with GIANO-TNG [PDF]

, 2015
Aims Determining the intensity of lines and continuum airglow emission in the H-band is important for the design of faint-object infrared spectrographs. Existing spectra at low/medium resolution cannot disentangle the true sky-continuum from instrumental
Baffa, C., Benatti, S., Biliotti, V., Carbonaro, L., Carleo, I., Falcini, G., Ghedina, A., Ghinassi, F., Giani, E., Harutyunyan, A., Iuzzolino, M., Lapenna, E., Lodi, M., Massi, F., Mucciarelli, A., Oliva, E., Origlia, L., Pedani, M., Sanna, N., Scuderi, S., Sozzi, M., Tozzi, A   +21 more
core   +3 more sources

Elemental Analysis of Catalysts in a Fixed‐Bed Reactor by Laser‐Induced Breakdown Spectroscopy

ChemCatChem, Volume 17, Issue 21, November 10, 2025.
The “Elemental Composition” provides information about promoters and poisons found in heterogeneous catalysts. Access to this piece of information under reaction conditions remains yet an unsolved challenge. This work explores the potential and limitations of laser‐induced breakdown spectroscopy (LIBS) as an in situ reactor diagnostic technique ...
Diego Espinoza, Hemanth Appala, Oliver Korup, Raimund Horn   +3 more
wiley   +1 more source

Monitoring the lowermost tropospheric ozone with thermal infrared observations from a geostationary platform: performance analyses for a future dedicated instrument [PDF]

Atmospheric Measurement Techniques, 2014
In this paper, we present performance analyses for a concept geostationary observing system called MAGEAQ (Monitoring the Atmosphere from Geostationary orbit for European Air Quality).
P. Sellitto, G. Dufour, M. Eremenko, J. Cuesta, G. Forêt, B. Gaubert, M. Beekmann, V.-H. Peuch, J.-M. Flaud   +8 more
doaj   +1 more source

Spectropolarimetry of the Classical T Tauri Star TW Hydrae [PDF]

, 2006
We present high resolution (R ~ 60,000) circular spectropolarimetry of the classical T Tauri star TW Hydrae. We analyze 12 photospheric absorption lines and measure the net longitudinal magnetic field for 6 consecutive nights.
Camenzind M., Cameron A. C., Christopher M. Johns-Krull, Guenther E. W., Hao Yang, Herczeg G. J., Jeff A. Valenti, Kitchatinov L. L., Mathys G., Mathys G., Mekkaden M. V., Tayler R. J.   +11 more
core   +3 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

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