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pro vyhledávání: '"Y. Sheffer"'
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Autor:
Steven R. Federman, Y. Sheffer
Publikováno v:
The Astrophysical Journal. 659:1352-1359
Three interstellar absorption lines near 1370 A seen toward zeta Oph have been assigned by Watson to Rydberg transitions in the G-X (or 3d-X) band of CH. Our survey of a dozen diffuse interstellar lines of sight shows that the three absorption lines
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c007259343648032e12d872aa2b278c9
https://doi.org/10.1086/512775
https://doi.org/10.1086/512775
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3851d01da4262f65bee2ec8e1c526fc
https://doi.org/10.1086/505486
https://doi.org/10.1086/505486
Publikováno v:
The Astrophysical Journal. 619:884-890
The source of fluorine is not well understood, although core-collapse supernovae, Wolf-Rayet stars, and asymptotic giant branch stars have been suggested. A search for evidence of the nu process during Type II supernovae is presented. Absorption from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8d59d88dae1bd489d61e2f071b59f2f
https://doi.org/10.1086/426778
https://doi.org/10.1086/426778
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f79652b150283fcf0fd533756ae48dbc
https://doi.org/10.1051/0004-6361:20041017
https://doi.org/10.1051/0004-6361:20041017
Publikováno v:
The Astrophysical Journal. 574:L171-L174
We report the detection of fully resolved absorption lines of A-X bands from interstellar 12C17O and 12C18O, through high-resolution spectroscopy of X Persei with the Space Telescope Imaging Spectrograph*. The first ultraviolet measurement of an inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7446e518d666e5146c96053dd84ca7f1
https://doi.org/10.1086/342501
https://doi.org/10.1086/342501
Publikováno v:
apj
apj, 2014, 794 (1), pp.83. ⟨10.1088/0004-637X/794/1/83⟩
apj, 2014, 794 (1), pp.83. ⟨10.1088/0004-637X/794/1/83⟩
Recent studies have confirmed the presence of buckminsterfullerene (C{sub 60}) in different interstellar and circumstellar environments. However, several aspects regarding C{sub 60} in space are not yet well understood, such as the formation and exci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::163cac757f597df706f7d3da3e7cb933
http://arxiv.org/abs/1410.2106
http://arxiv.org/abs/1410.2106
Autor:
Mark G. Wolfire, Y. Sheffer
We observed H2 line emission with Spitzer-IRS toward M17-SW and modeled the data with our PDR code. Derived gas density values of up to few times 10^7 cm^-3 indicate that H2 emission originates in high-density clumps. We discover that the PDR code ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a068ed11ce24b44127c1bfaba4cf015b
http://arxiv.org/abs/1309.3181
http://arxiv.org/abs/1309.3181