Zobrazeno 1 - 7
of 7
pro vyhledávání: '"M. A. El Shalaby"'
Publikováno v:
Astrophysics and Space Science. 188:109-116
We have calculated the opacity of interstellar grains in the temperature range 10–1500 K. Two composite grain models have been considered. One of them consists of silicate coated with an ice mantle and the second has a graphite core coated also wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a18e93e5c8d35d7bf7d2c79e0bc36a1
https://doi.org/10.1007/bf00642927
https://doi.org/10.1007/bf00642927
Publikováno v:
Astrophysics and Space Science. 185:195-209
The contraction of an interstellar cloud is followed. The results indicates that there are shock waves appear during contraction. In order to study the effect of shock waves, two models have been studied. The post-shock temperature for the two models
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::533f043c97783f177270954efe274a2c
https://doi.org/10.1007/bf00643188
https://doi.org/10.1007/bf00643188
Publikováno v:
Astrophysics and Space Science. 185:277-294
In this paper we study the effect of shock waves on the chemical structure of the interstellar clouds. A model of molecular cloud has been assumed. The chemistry is investigated in a time dependent model. Our chemical network contains 56 species in 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3d6398c79e9dcf16e8d42f6b4e521f6
https://doi.org/10.1007/bf00643194
https://doi.org/10.1007/bf00643194
Publikováno v:
Astrophysics and Space Science. 179:259-274
In this paper we present new and exact analytical and computational developments of Guttler's formulae for composite grains, thereafter applied for the two models: (1) Graphite core-ice mantle. (2) Silicate core-ice mantle.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd41432e965d57070f731cf328cb33c5
https://doi.org/10.1007/bf00646946
https://doi.org/10.1007/bf00646946
Publikováno v:
Vistas in Astronomy. 31:523-526
The contraction of an initially isothermal interstellar cloud of about 700−3M⊚ at a temperature of 20 K and a central density of 103 atoms.cm was followed for about 106 years taking into consideration: (i) local thermal processes, (ii) molecular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6adf07ec41a9f06af4c2928cdeac658e
https://doi.org/10.1016/0083-6656(88)90260-7
https://doi.org/10.1016/0083-6656(88)90260-7
Publikováno v:
Circumstellar Matter ISBN: 9789027725127
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df513627a7033fb50c70ecbdf1440575
https://doi.org/10.1007/978-94-009-3887-8_42
https://doi.org/10.1007/978-94-009-3887-8_42
Autor:
M. A. El Shalaby, A. Aiad
Publikováno v:
Astrochemistry ISBN: 9789027723604
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb668b74fd2aa96c504b3c8317c4b20f
https://doi.org/10.1007/978-94-009-4774-0_45
https://doi.org/10.1007/978-94-009-4774-0_45