Zobrazeno 1 - 10
of 98
pro vyhledávání: '"F. Rostas"'
Autor:
Jean-Louis Lemaire, S. R. Federman, F. Rostas, Y. Sheffer, M. Eidelsberg, Javier Barquín Ruiz, Jean-Hugues Fillion
Publikováno v:
The Astrophysical Journal. 647:1543-1548
One of the processes controlling the interstellar CO abundance and the ratio of its isotopologues is photodissociation. Accurate oscillator strengths and predissociation rates for Rydberg transitions are needed for modeling this process. We present r
Autor:
F. Rostas, Jean-Louis Lemaire, Jean-Hugues Fillion, M. Eidelsberg, Y. Sheffer, S. R. Federman
Publikováno v:
Astronomy & Astrophysics. 424:355-361
Absorption oscillator strengths have been determined from high-resolution spectra in the 967-972 \AA region of three CO isotopomers for transitions to the Rydberg levels 4{\it p$\pi$}(0), 3{\it d$\pi$}(1) and 4{\it p$\sigma$}(0), as well as to the mi
Autor:
F. Rostas, M. Eidelsberg
Publikováno v:
The Astrophysical Journal Supplement Series. 145:89-109
The forbidden triplet-singlet bands of CO, originating from the X 1Σ+(v = 0) level and involving the a'3Σ+, e3Σ-, and d3Δ states, can advantageously be used in view of their low oscillator strengths to measure large CO column densities when the a
Autor:
J. H. Fillion, F. Rostas, J. L. Lemaire, R. Van Harrevelt, M. C. Van Hemert, A. H. Zanganeh, Marta Castillejo, Javier Barquín Ruiz
Publikováno v:
The Journal of Physical Chemistry A. 105:11414-11424
Rotational and vibrational state distributions have been measured for the OH/OD(A 2 Σ + ) fragment produced by the photodissociation of H 2 O/D 2 O at a set of wavelengths in the 133-119 nm range that lead to excitation of the B( 1 A 1 ) state, eith
Publikováno v:
Journal of Molecular Spectroscopy. 203:314-319
The forbidden c3Π–X1Σ+ (0–0) absorption band of carbon monoxide has been reinvestigated under different pressure conditions using the 10.7-m VUV spectrograph at Meudon. Overlap with the allowed C1Π–X1Σ+ (0–0) band at lower transition ener
Autor:
Paul D. Feldman, A. Jolly, F. Rostas, Roger Ferlet, A. Roberge, Anne-Marie Lagrange, J. L. Lemaire, Alfred Vidal-Madjar
Publikováno v:
The Astrophysical Journal. 538:904-910
High resolution FUV echelle spectra showing absorption features arising from CI and CO gas in the Beta Pictoris circumstellar (CS) disk were obtained on 1997 December 6 and 19 using the Space Telescope Imaging Spectrograph (STIS). An unsaturated spin
Autor:
Niloufar Shafizadeh, Javier Barquín Ruiz, A. H. Zanganeh, Jean-Louis Lemaire, F. Rostas, Jean-Hugues Fillion, Marta Castillejo
Publikováno v:
The Journal of Chemical Physics. 112:5660-5671
A complete determination of the rotational and vibrational distributions in the OH/OD(A 2Σ+) fragments which result from the VUV photodissociation of H2O/D2O as a function of excitation energy is presented. VUV excitation was performed at eight diff
Publikováno v:
The Journal of Chemical Physics. 112:4591-4603
Absorption oscillator strengths of 18 intersystem bands of CO between 1360 and 1620 A originating from the ground state and involving the a′ 3Σ+, e 3Σ−, and d 3Δ states have been measured using synchrotron radiation as a background source. The
Autor:
P. L. Smith, K. A. Berrington, U.G. Jørgensen, H. Mason, W. C. Martin, W. Parkinson, Sveneric Johansson, N. Feautrier, F. Rostas, W.-Ü L. Tchang-Brillet, N. Grevesse
Publikováno v:
Transactions of the International Astronomical Union. 24:380-420
In recognition of its special interdisciplinary character, IAU Commission 14 is linked directly to the Executive Committee. The Commission’s role is to inform the astronomical community of new developments in the diverse fields of research which in
Publikováno v:
Symposium - International Astronomical Union. 197:303-314
The development of astrochemistry is inextricably linked to the generation of fundamental data. In this report, we discuss data needs in terms of astrochemical models, gas-phase kinetics, molecular excitation, optical and UV spectroscopy, solid-state