Zobrazeno 1 - 10 of 277 pro vyhledávání: '"D R Flower"'
1
Electron attachment to interstellar grains
Autor: D R Flower
Publikováno v: Monthly Notices of the Royal Astronomical Society. 517:175-181
We have performed quantum mechanical calculations of cross-sections and rate coefficients for electron attachment to small, neutral, and positively charged grains. In addition to the polarization potential and – for charged grains – the Coulomb p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d2e89d429203d4e4fc99e482d32ed8cb
https://doi.org/10.1093/mnras/stac2701
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2
Three-body recombination of hydrogen in the early Universe
Autor: D R Flower
Publikováno v: Monthly Notices of the Royal Astronomical Society: Letters, 2023, Vol.523(1) [Peer Reviewed Journal]
It has been suggested recently that three-body recombination of two protons and an electron might be significant in the formation of atomic hydrogen in the early Universe. We demonstrate that this process is completely negligible in the primordial pl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a07f8ec8fa5415c7277a67b884227354
http://dro.dur.ac.uk/38543/
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3
The ortho-to-para ratio of water in interstellar clouds
Autor: D. R. Flower, G. Pineau des Forêts, Claire Rist, Alexandre Faure, A Matthews, P. Hily-Blant
Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, 487 (3), pp.3392-3403. ⟨10.1093/mnras/stz1531⟩
Monthly notices of the Royal Astronomical Society, 2019, Vol.487(3), pp.3392-3403 [Peer Reviewed Journal]
The nuclear-spin chemistry of interstellar water is investigated using the University of Grenoble Alpes Astrochemical Network (UGAN). This network includes reactions involving the different nuclear-spin states of the hydrides of carbon, nitrogen, oxy
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d06880516e21f0b96992cd4b873379f
https://doi.org/10.1093/mnras/stz1531
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4
Collisional cooling of primordial and interstellar media by H2
Autor: G. Pineau des Forêts, P. Hily-Blant, François Lique, Tomás González-Lezana, D. R. Flower, Alexandre Faure
Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
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Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2021, 507 (3), pp.3564-3571. ⟨10.1093/mnras/stab2272⟩
Monthly notices of the Royal Astronomical Society, 2021, Vol.507(3), pp.3564-3571 [Peer Reviewed Journal]
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 507 (3), pp.3564-3571. ⟨10.1093/mnras/stab2272⟩
8 pags., 10 figs., 2 tabs.
We have computed the rate of collisional cooling of a gas by H2 molecules under conditions appropriate to the primordial and interstellar media. We incorporated the results of recent calculations of the rate coefficien
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a301cdb6ec87b345f00893f392b379f
http://hdl.handle.net/10261/256600
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5
Depletion and fractionation of nitrogen in collapsing cores
Autor: Alexandre Faure, D. R. Flower, P. Hily-Blant, G. Pineau des Forêts
Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 643, pp.A76. ⟨10.1051/0004-6361/202038780⟩
Measurements of the nitrogen isotopic ratio in Solar System comets show a constant value, ~140, which is three times lower than the protosolar ratio, a highly significant difference that remains unexplained. Observations of static starless cores at e
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0760f364cf93474d3373968c129842ff
https://hal.archives-ouvertes.fr/hal-02988986/file/aa38780-20.pdf
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6
Modelling the molecular composition and nuclear-spin chemistryof collapsing pre-stellar sources★
Autor: Claire Rist, G. Pineau des Forêts, D. R. Flower, P. Hily-Blant, Alexandre Faure
Publikováno v: Monthly notices of the Royal Astronomical Society, 2018, Vol.477(4), pp.4454-4472 [Peer Reviewed Journal]
Monthly Notices of the Royal Astronomical Society: Letters
Monthly Notices of the Royal Astronomical Society: Letters, Oxford Journals, In press
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 477 (4), pp.4454-4472. ⟨10.1093/mnras/sty881⟩
We study the gravitational collapse of prestellar sources and the associated evolution of their chemical composition. We use the University of Grenoble Alpes Astrochemical Network (UGAN), which includes reactions involving the different nuclear--spin
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98cdbdceadc51071ced1b62c705ca773
https://doi.org/10.1093/mnras/sty881
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7
David Flower: Editor-in-chief, Monthly Notices of the RAS
Autor: D. R. Flower
Publikováno v: Astronomy & Geophysics. 62:3.43-3.43
The astronomer has served on the MNRAS editorial board for more than 35 years, and since 2012 has steered it as it picked up speed through the digital age. Interview by Paul Johnson
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::575344711db9009361e5b25fdcc33c27
https://doi.org/10.1093/astrogeo/atab071
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8
Characterizing shock waves in molecular outflow sources: the interpretation of Herschel and Spitzer observations of NGC 1333 IRAS 4B
Autor: G. Pineau des Forêts, D. R. Flower
Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2013, 436 (3), pp.2143-2150. ⟨10.1093/mnras/stt1720⟩
Monthly Notices of the Royal Astronomical Society, 2013, 436 (3), pp.2143-2150. ⟨10.1093/mnras/stt1720⟩
International audience
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45574ec8d2e1f2bcf7b9031d35d87000
https://doi.org/10.1093/mnras/stt1720
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9
Rate coefficients for the rovibrational excitation of CO by H2 and He
Autor: D. R. Flower
Publikováno v: Monthly Notices of the Royal Astronomical Society. 425:1350-1356
Cross-sections and rate coefficients have been calculated for the rovibrational excitation of CO by ortho- and para-H2 and by He. We adopted the quantal coupled channels method of solving the scattering equations, including CO rotational levels in th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d45b75265be9ee784a269759af3abeaf
https://doi.org/10.1111/j.1365-2966.2012.21547.x
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10
Time-dependent modelling of the molecular line emission from shock waves in outflow sources
Autor: G. Pineau des Forêts, D. R. Flower
Publikováno v: Monthly Notices of the Royal Astronomical Society. 421:2786-2797
We have developed further the technique of time-dependent modelling of magnetohydrodynamic shock waves, with a view to interpreting the molecular line emission from outflow sources. The extensively observed source L1157 B1 was chosen as an exemplar o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f082210c98ce4a62a406c74165689610
https://doi.org/10.1111/j.1365-2966.2012.20481.x
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