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43 papers · 2 filters
Polycyclic aromatic hydrocarbon processing in a hot gas
E. R. Micelotta, A. P. Jones, A. G. G. M. Tielens
Context: PAHs are thought to be a ubiquitous and important dust component of the interstellar medium. However, the effects of their immersion in a hot (post-shock) gas have never b…
The low-mass Initial Mass Function in the 30 Doradus starburst cluster
M. Andersen, H. Zinnecker, A. Moneti +5
We present deep Hubble Space Telescope (HST) NICMOS 2 F160W band observations of the central 56*57" (14pc*14.25pc) region around R136 in the starburst cluster 30 Dor (NGC 2070) loc…
Cooling lines as probes of the formation and buildup of galaxies and black holes
P. P. van der Werf, M. Spaans
We discuss the use of SPICA to study the cosmic history of star formation and accretion by supermassive black holes. The cooling lines, in particular the high-J rotational lines of…
Trigonometric Parallaxes of 6.7 GHz Methanol Masers
K. L. J. Rygl, A. Brunthaler, M. J. Reid +3
Emission from the 6.7 GHz methanol maser transition is very strong, is relatively stable, has small internal motions, and is observed toward numerous massive star-forming regions i…
Microscopic simulation of methanol and formaldehyde ice formation in cold dense cores
H. M. Cuppen, E. F. van Dishoeck, E. Herbst +1
Methanol and its precursor formaldehyde are among the most studied organic molecules in the interstellar medium and are abundant in the gaseous and solid phases. We recently develo…
Submillimetre Variability of Eta Carinae: cool dust within the outer ejecta
H. L. Gomez, C. Vlahakis, C. M. Stretch +5
Previous submillimetre (submm) observations detected 0.7 solar masses of cool dust emission around the Luminous Blue Variable (LBV) star Eta Carinae. These observations were hinder…