VAN DER TAK, Floris; HERPIN, Fabrice; WYROWSKI, Friedrich; FOR THE HIGH-MASS WISH TEAM

Metadatos

Licencia de uso del documento

VAN DER TAK, Floris
SRON Netherlands Institute for Space Research [SRON]
Max-Planck-Institut für Radioastronomie [MPIFR]

HERPIN, Fabrice
FORMATION STELLAIRE 2011

WYROWSKI, Friedrich
Max-Planck-Institut für Radioastronomie [MPIFR]

Idioma

Communication dans un congrès

Este ítem está publicado en

EAS Publications Series, Volume 52, 2011, pp.201-204, EAS Publications Series, Volume 52, 2011, pp.201-204, Conditions and Impact of Star Formation, 2010, Zermatt. 2011, vol. 52, p. 201-204

Resumen en inglés

This paper reviews the first results of observations of H2O line emission with Herschel-HIFI towards high-mass star-forming regions, obtained within the WISH guaranteed time program. The data reveal three kinds of gas-phase H2O: 'cloud water' in cold tenuous foreground clouds, 'envelope water' in dense protostellar envelopes, and 'outflow water' in protostellar outflows. The low H2O abundance (1e-10 -- 1e-9) in foreground clouds and protostellar envelopes is due to rapid photodissociation and freeze-out on dust grains, respectively. The outflows show higher H2O abundances (1e-7 -- 1e-6) due to grain mantle evaporation and (probably) neutral-neutral reactions.< Leer menos

Palabras clave en inglés

Astrophysics

Galaxy Astrophysics

Orígen

Importado de Hal

Centros de investigación

Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804