Zobrazeno 1 - 10
of 314
pro vyhledávání: '"Koning N"'
Publikováno v:
A&A 573, A56 (2015)
Modern instrumentation in radioastronomy constitutes a valuable tool for studying the Universe: ALMA has reached unprecedented sensitivities and spatial resolution, while Herschel/HIFI has opened a new window for probing molecular warm gas (~50-1000
Externí odkaz:
http://arxiv.org/abs/1410.6691
Autor:
Ribeiro, V. A. R. M., Chomiuk, L., Munari, U., Steffen, W., Koning, N., O'Brien, T. J., Simon, T., Woudt, P. A., Bode, M. F.
Publikováno v:
2014, ApJ, 792, 57
Observations of novae at radio frequencies provide us with a measure of the total ejected mass, density profile and kinetic energy of a nova eruption. The radio emission is typically well characterized by the free-free emission process. Most models t
Externí odkaz:
http://arxiv.org/abs/1407.2935
[Context:] This article is the second in a two part series introducing r-Java 2.0, a nucleosynthesis code for open use that performs r-process calculations and provides a suite of other analysis tools. [Aims:] The first paper discussed the nuclear ph
Externí odkaz:
http://arxiv.org/abs/1402.3824
Publikováno v:
A&A 568, A97 (2014)
[Aims:] We present r-Java 2.0, a nucleosynthesis code for open use that performs r-process calculations as well as a suite of other analysis tools. [Methods:] Equipped with a straightforward graphical user interface, r-Java 2.0 is capable of; simulat
Externí odkaz:
http://arxiv.org/abs/1402.3823
Autor:
Steffen, W., Koning, N., Esquivel, A., Garcia-Segura, G., Garcia-Diaz, Ma. T., Lopez, J. A., Magnor, M.
We explore the formation of multipolar structures in planetary and pre-planetary nebulae from the interaction of a fast post-AGB wind with a highly inhomogeneous and filamentary shell structure assumed to form during the final phase of the high densi
Externí odkaz:
http://arxiv.org/abs/1308.4372
NGC 2392 is a young double-shell planetary nebula (PN). Its intrinsic structure and shaping mechanism are still not fully understood. In this paper we present new spectroscopic observations of NGC 2392. The slits were placed at two different location
Externí odkaz:
http://arxiv.org/abs/1205.3470
Autor:
Persson, C. M., Olofsson, A. O. H., Koning, N., Bergman, P., Bernath, P., Black, J. H., Frisk, U., Geppert, W., Hasegawa, T. I., Hjalmarson, A., Kwok, S., Larsson, B., Lecacheux, A., Nummelin, A., Olberg, M., Sandqvist, Aa., Wirstrom, E. S.
Publikováno v:
Astron.Astrophys.476:807,2007
We investigate the physical and chemical conditions in a typical star forming region, including an unbiased search for new molecules in a spectral region previously unobserved. Due to its proximity, the Orion KL region offers a unique laboratory of m
Externí odkaz:
http://arxiv.org/abs/0910.1815
Autor:
Olofsson, A. O. H., Persson, C. M., Koning, N., Bergman, P., Bernath, P., Black, J. H., Frisk, U., Geppert, W., Hasegawa, T. I., Hjalmarson, A., Kwok, S., Larsson, B., Lecacheux, A., Nummelin, A., Olberg, M., Sandqvist, Aa., Wirstrom, E. S.
Publikováno v:
Astron.Astrophys.476:791,2007
Spectral line surveys are useful since they allow identification of new molecules and new lines in uniformly calibrated data sets. Nonetheless, large portions of the sub-millimetre spectral regime remain unexplored due to severe absorptions by H2O an
Externí odkaz:
http://arxiv.org/abs/0910.1825
In search for deviations from homologous expansion in planetary nebulae we present a 3D morphokinematical model of NGC 7009. The model has been constructed with {\em Shape} based on PV diagrams from the literature and HST images. We find that the dat
Externí odkaz:
http://arxiv.org/abs/0905.2148