74 citations · 105 across the 3 of their papers we have counts for
6 papers
Probing isotopic ratios at z = 0.89: molecular line absorption in front of the quasar PKS 1830-211
Sebastien Muller, Michel Guelin, Michael Dumke +2
With the Plateau de Bure interferometer, we have measured the C, N, O and S isotopic abundance ratios in the arm of a spiral galaxy with a redshift of 0.89. The galaxy is seen face…
C18O (3-2) observations of the Cometary Globule CG 12: a cold core and a C18O hot spot
L. K. Haikala, M. Juvela, J. Harju +3
The feasibility of observing the C18O (3-2) spectral line in cold clouds with the APEX telescope has been tested. As the line at 329.330 GHz lies in the wing of a strong atmospheri…
Detection of H2D+ in a massive prestellar core in Orion B
J. Harju, L. K. Haikala, K. Lehtinen +6
Aims. The purpose of this study is to examine the prediction that the deuterated H3+ ion, H2D+, can be found exclusively in the coldest regions of molecular cloud cores. This is al…
The emissivity of dust grains in spiral galaxies
P. B. Alton, E. M. Xilouris, A. Misiriotis +2
We use the radiation transfer simulation of Xilouris et al. (1999) to constrain the quantity of dust in three nearby spiral galaxies (NGC 4013, NGC 5907 and NGC 4565). The predicte…
Cold dust in a selected sample of nearby galaxies. I. The interacting galaxy NGC4631
M. Dumke, M. Krause, R. Wielebinski
We have observed the continuum emission of the interacting galaxy NGC4631 at 0.87 and 1.23mm using the Heinrich-Hertz-Telescope on Mt. Graham and the IRAM 30-m telescope on Pico Ve…
Warm molecular gas in nearby galaxies. Mapping of the CO(3-2) emission
Michael Dumke
Using the Heinrich-Hertz-Telescope on Mt. Graham, Arizona, we have observed several nearby galaxies in the CO(3-2) line. The CO(3-2) emission traces - in contrast to lower rotation…