Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Schöier, Fredrik L."'
In the recent literature there has been some doubt as to the reliability of CO multi-transitional line observations as a mass-loss-rate estimator for AGB stars. Mass-loss rates for 10 intermediate- to high-mass-loss-rate AGB stars are derived using a
Externí odkaz:
http://arxiv.org/abs/0806.0517
Aims: By performing a detailed radiative transfer analysis, we determine fractional abundances of circumstellar H2O in the envelopes around six M-type asymptotic giant branch stars. The models are also used to predict H2O spectral line emission for t
Externí odkaz:
http://arxiv.org/abs/0801.0971
Autor:
Jorgensen, Jes K., Bourke, Tyler L., Myers, Philip C., Di Francesco, James, van Dishoeck, Ewine F., Lee, Chin-Fei, Ohashi, Nagayoshi, Schoeier, Fredrik L., Takakuwa, Shigehisa, Wilner, David J., Zhang, Qizhou
Publikováno v:
Astrophys.J.659:479-498,2007
This paper presents a large spectral line and continuum survey of 8 deeply embedded, low-mass protostellar cores using the Submillimeter Array. Each source was observed in high excitation lines of some of the most common molecular species, CO, HCO+,
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701115
Autor:
Maret, Sebastien, Ceccarelli, Cecilia, Caux, Emmanuel, Tielens, Alexander G. G. M., Jorgensen, Jes K., Van Dishoeck, Ewine F., Bacmann, Aurore, Castets, Alain, Lefloch, Bertrand, Loinard, Laurent, Parise, Berengere, Schoeier, Fredrik L.
Publikováno v:
Astronomy and Astrophysics 416 (2004) 577-594
We present a survey of the formaldehyde emission in a sample of eight Class 0 protostars obtained with the IRAM and JCMT telescopes. The data have been analyzed with three different methods with increasing level of sophistication. We first analyze th
Externí odkaz:
http://arxiv.org/abs/astro-ph/0310536
A study of the chemical structure of the envelopes around a sample protostars is introduced. Physical models for the envelopes derived using 1D radiative transfer modeling of their dust continuum emission are used as input for Monte Carlo modeling of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0211525
Publikováno v:
Astron.Astrophys. 389 (2002) 908
We present 1D radiative transfer modelling of the envelopes of a sample of 18 low-mass protostars and pre-stellar cores with the aim of setting up realistic physical models, for use in a chemical description of the sources. The density and temperatur
Externí odkaz:
http://arxiv.org/abs/astro-ph/0205068
Autor:
Schöier, Fredrik L.1, Olofsson, Hans1
Publikováno v:
Proceedings of the International Astronomical Union. 02/02/2008, Vol. 4 Issue S251, p201-206. 6p.
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Proceedings of the International Astronomical Union. 02/02/2008, Vol. 4 Issue S251, p167-168. 2p.