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Water emission from the chemically rich outflow L1157
M. Vasta, C. Codella, A. Lorenzani +7
In the framework of the Herschel-WISH key program, several ortho-H2O and para-H2O emission lines, in the frequency range from 500 to 1700 GHz, were observed with the HIFI instrumen…
Water in star-forming regions with Herschel: highly excited molecular emission from the NGC 1333 IRAS 4B outflow
Gregory J. Herczeg, Agata Karska, Simon Bruderer +9
During the embedded phase of pre-main sequence stellar evolution, a disk forms from the dense envelope while an accretion-driven outflow carves out a cavity within the envelope. Hi…
Water in Star and Planet Forming Regions
Edwin A. Bergin, Ewine F. van Dishoeck
In this paper we discuss the astronomical search for water vapor in order to understand the disposition of water in all its phases throughout the process of star and planet formati…
A 30 AU radius CO gas hole in the disk around the Herbig Ae star Oph IRS 48
Joanna M. Brown, Gregory J. Herczeg, Klaus M. Pontoppidan +1
The physical processes leading to the disappearance of disks around young stars are not well understood. A subclass of transitional disks, the so-called cold disks with large inner…
The chemical history of molecules in circumstellar disks. II. Gas-phase species
R. Visser, S. D. Doty, E. F. van Dishoeck
Context: The chemical composition of a molecular cloud changes dramatically as it collapses to form a low-mass protostar and circumstellar disk. Two-dimensional (2D) chemodynamical…
Herschel Measurements of Molecular Oxygen in Orion
Paul F. Goldsmith, Rene Liseau, Tom A. Bell +31
We report observations of three rotational transitions of molecular oxygen (O2) in emission from the H2 Peak 1 position of vibrationally excited molecular hydrogen in Orion. We obs…