Arto Heikkilä
Chalmers University of Technology
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Publication
Featured researches published by Arto Heikkilä.
Astronomy and Astrophysics | 2001
S. J. Curran; L. E. B. Johansson; Per Bergman; Arto Heikkilä; Susanne Aalto
We present results of a multi-transition study of the dense molecular gas in the central part of the hybrid star-burst/Seyfert galaxies NGC 4945 and the Circinus galaxy. From the results of radiative transfer calculations, we estimate in NGC 4945
Astrophysical Journal Supplement Series | 2008
Tetsuhiro Minamidani; Norikazu Mizuno; Yoji Mizuno; Akiko Kawamura; Toshikazu Onishi; Tetsuo Hasegawa; Ken'ichi Tatematsu; Masafumi Ikeda; Yoshiaki Moriguchi; Nobuyuki Yamaguchi; Jürgen Ott; Tony Wong; Erik Muller; Jorge L. Pineda; Annie Hughes; Lister Staveley-Smith; Ulrich Klein; Akira Mizuno; S. Nikolic; R. S. Booth; Arto Heikkilä; L.-Å. Nyman; Mikael S. Lerner; Guido Garay; Sungeun Kim; Motosuji Fujishita; Tokuichi Kawase; M. Rubio; Yasuo Fukui
n_{{\rm H}_2}=3 10^3{-}10^4
Physics of fluids. B, Plasma physics | 1993
Arto Heikkilä; Jan Weiland
cm -3 and
Archive | 2008
Tetsuhiro Minamidani; Norikazu Mizuno; Yoji Mizuno; Akiko Kawamura; Toshikazu Onishi; Tsuguo Hasegawa; Ken'ichi Tatematsu; Masafumi Ikeda; Yoshiaki Moriguchi; Nobuyuki Yamaguchi; Jürgen Ott; Tony Wong; E. Muller; Jorge L. Pineda; Annie Hughes; Lister Staveley-Smith; U. Klein; Akira Mizuno; S. Nikolic; R. S. Booth; Arto Heikkilä; L.-Å. Nyman; Mikael S. Lerner; Guido Garay; Sungeun Kim; M. Rubio; Yasuo Fukui
T_{\rm kin}\approx100
Symposium - International Astronomical Union | 1999
L. E. B. Johansson; Arto Heikkilä; Hans Olofsson
K and in Circinus
Astronomy and Astrophysics | 2011
Aleksi Suutarinen; Wolf D. Geppert; J. Harju; Arto Heikkilä; Stephan Hotzel; M. Juvela; T. J. Millar; Catherine Walsh; Jan Gerard Amos Wouterloot
n_{{\rm H}_2}=2 10^3{-}10^5
Astronomy and Astrophysics | 1999
Arto Heikkilä; L. E. B. Johansson; H. Olofsson
cm -3 and
Astronomy and Astrophysics | 1998
Arto Heikkilä; L. E. B. Johansson; H. Olofsson
T_{\rm kin}\approx50{-}80
Archive | 2005
Akiko Kawamura; Tetsuhiro Minamidani; Yoji Mizuno; Norikazu Mizuno; Toshikazu Onishi; Akira Mizuno; Yasuo Fukui; Miroslav Filipovic; Lister Staveley-Smith; L. E. B. Johansson; S. Nikolic; R. S. Booth; Arto Heikkilä; L.-Å. Nyman; Matthew Lerner; Ken'ichi Tatematsu; Tsuguo Hasegawa; Makoto Ikeda
K for the molecular hydrogen density and kinetic temperature, respectively. As well as density/temperature tracing molecules, we have observed C 17 O and C 18 O in each galaxy and the value of C 18 O/C
Archive | 2003
S. Kontinen; Jorma Harju; P. Caselli; Arto Heikkilä; Malcolm Walmsley
^{17}{\rm O}\approx6
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