West Europe Report

DTIC Science & Technology

1987-03-02

MERCADO , 26 Dec 86) 79 MILITARY FINLAND Reactions to Koivlsto Nordic Sea Speech (HELSINGIN SANOMAT, various dates) Komissarov on Finnish...Helsinki Municipal Court on a Communist Party internal dispute has created an exceptional situation. It turns out that the decision of a "bourgeois...chose to place in the way of the Taisto Sinisalo and Jouko Kajanoja led minority. According to the decision of the municipal court the Communist

ESPAS: the European e-science platform to access near-Earth space data (Invited)

NASA Astrophysics Data System (ADS)

Belehaki, A.; Hapgood, M. A.; Ritschel, B.; Manola, N.

2013-12-01

Lebesis, Bruno Zolesi, Tatjana Gerzen, Ingemar Häggström, Anna Charisi, Ivan Galkin, Jurgen Watermann, Matthew Angling, Timo Asikainen, Alan Aylward, Henrike Barkmann, Peter Bergqvist, Andrew Bushell, Fabien Darrouzet, Dimitris Dialetis, Carl-Fredrik Enell, Daniel Heynderickx, Norbert Jakowski, Magnar Johnsen, Jean Lilensten, Ian McCrea, Kalevi Mursula, Bogdan Nicula, Michael Pezzopane, Viviane Pierrard, Bodo Reinisch, Bernd Ritschel, Luca Spogli, Iwona Stanislawska, Claudia Stolle, Eija Tanskanen, Ioanna Tsagouri, Esa Turunen, Thomas Ulich, Matthew Wild, Tim Yeoman

Infrared Halo Frames a Newborn Star

NASA Astrophysics Data System (ADS)

2003-08-01

infrared than in visible light. This is because the absorption of infrared light by dust particles is smaller than the absorption of visible light. More dust is then needed to produce the same amount of scattering and to show a rim in infrared light. The infrared rim will therefore show up in an area where the dust density is higher, i.e. closer to the centre of the cloud, than the visible-light rim. Similar rings were also detected in the J- and Ks-band images and, as expected, of different sizes. Thus the mere observation of the size (and shape) of a bright rim already provides information about the internal structure of the cloud. In the case of DC303.8-14.2, a detailed evaluation shows that the dust density of the centre is so high that any visible light from the nascent star in there would be dimmed at least 1000 times before it emerges from the cloud. Getting a bonus: Jets from a young star As an unexpected and welcome bonus, the astronomers also detected several jet- and knot-like structures in the Ks-band image (right panel in PR Photo 26a/03), near the IRAS source. The area shown represents the innermost region of the cloud (65 x 50 arcsec 2 , or just 1/500 of the area of the DSS image to the left). Several knot-like structures on a line like a string of beads are clearly seen. They are most probably regions where the gas ejected by the young stellar object rams into the surrounding medium, creating zones of compressed and hot molecular hydrogen. Such structures are known by astronomers as "Herbig-Haro objects", cf. ESO PR 17/99. More information A general description of the methods used to study and model surface brightness observations of small dark clouds in given in a basic paper by Kimmo Lehtinen and Kalevi Mattila in the research journal Astronomy & Astrophysics (Vol. 309, p. 570 1996). The results presented here will be published in a forthcoming paper in Astronomy & Astrophysics.