Zobrazeno 1 - 10
of 34
pro vyhledávání: '"W. H. Kegel"'
Publikováno v:
Astrophysics and Space Science. 347:315-325
A number of small, cyclic molecules containing several carbon atoms in their ring structure has been identified in different astrophysical environments. It is the aim of this work to study important molecular properties of such heterocyclic species b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::385020b98ba37933bd64b97dbce2c404
https://doi.org/10.1007/s10509-013-1516-0
https://doi.org/10.1007/s10509-013-1516-0
Publikováno v:
Indian Journal of Physics. 86:555-561
We have theoretically investigated a number of cyclic molecules of four kinds: XC2H2, XC2H4, XC2, and HXC2, where X can be C, N, O, Na, Mg, Al, Si, P, S, and Ca, respectively, which might be present in interstellar and/or circumstellar space, and cal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbdce55da4a153ff33ffcbf700993616
https://doi.org/10.1007/s12648-012-0086-2
https://doi.org/10.1007/s12648-012-0086-2
Publikováno v:
Astronomy & Astrophysics. 467:371-374
Context. The c -C 3 H radical was first detected in TMC-1 by Yamamoto et al. (1987, ApJ, 322, L55), who observed the 2 12 $\rightarrow$ 1 11 transition at 91.5 GHz in emission. Mangum & Wootten (1990, A&A, 239, 319) observed the 1 10 $\rightarrow$ 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b2ef5d192178fac46b70213747adfad
https://doi.org/10.1051/0004-6361:20065821
https://doi.org/10.1051/0004-6361:20065821
Publikováno v:
Astronomy & Astrophysics. 445:591-600
We present observational line data for five Bok Globules. Observations were made in the J = 2 → 1 and J = 3 → 2 rotational transitions of CO, 13 CO and C 18 O at the Heinrich-Hertz-Telescope in Arizona. Using the stochastic radiative transfer mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03ef8a0d9ad4c65c3b7963ae0da6e999
https://doi.org/10.1051/0004-6361:20041881
https://doi.org/10.1051/0004-6361:20041881
Autor:
W. H. Kegel, M. Hegmann
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 342:453-462
We study the effects of stochastic density fluctuations on the transport of far-ultraviolet radiation in interstellar clouds. The physical processes considered are absorption and anisotropic scattering by dust grains. We consider clouds that are, on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01252f3b70a1d48b9cbde2aa81ece0ee
https://doi.org/10.1046/j.1365-8711.2003.06543.x
https://doi.org/10.1046/j.1365-8711.2003.06543.x
Autor:
W. H. Kegel, S. Chandra
Publikováno v:
Astronomy and Astrophysics Supplement Series. 142:113-118
Collisional rate coefficients for rotational transitions in C3 H2 and SiC2 due to collisions with H2 molecules are calculated. The C3 H2 has two distinct species, ortho and para, whereas the SiC2 has only ortho specie due to spin statistics for the i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a7ed38274d105f830c992e52676d5d8
https://doi.org/10.1051/aas:2000142
https://doi.org/10.1051/aas:2000142
Autor:
M. Hegmann, W. H. Kegel
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 283:167-173
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14b0614bdb89b32dcfc12290a00972a9
https://doi.org/10.1093/mnras/283.1.167
https://doi.org/10.1093/mnras/283.1.167
Autor:
W. H. Kegel, S. A. Levshakov
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 278:497-505
We study the formation of hydrogen HI Lyα forest lines in turbulent media accounting for the effects of a finite correlation length, l, in the velocity field. This is in contrast to the usual procedure, in which line formation is treated in the micr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abd566530c98029ff101003dea99a8af
https://doi.org/10.1093/mnras/278.2.497
https://doi.org/10.1093/mnras/278.2.497
Publikováno v:
Lecture Notes in Physics ISBN: 9783540604822
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b66376cc86d351d21545000e2b7afa2
https://doi.org/10.1007/bfb0102119
https://doi.org/10.1007/bfb0102119
Autor:
W. H. Kegel, G. Piehler
Publikováno v:
Lecture Notes in Physics ISBN: 9783540604822
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f226db95136ff448d283abbe951cff1a
https://doi.org/10.1007/bfb0102121
https://doi.org/10.1007/bfb0102121