A dataset provided by the European Space Agency

Name OT2_agomezru_2
Title Mapping Water and related Hydrides in Massive Protostellar outflows with HIFI


DOI https://doi.org/10.5270/esa-33h7wuf
Author European Space Agency
Description Massive outflows are known to drive a special chemical complexity due to the
strong shocks they produce in the surrounding molecular material.
Hydrides are key ingredients of interstellar chemistry since they are the
initial products of chemical networks that lead to the formation of more
complex molecules. Given their small reduced masses, their rotational lines
lie at short sub-mm wavelengths, which are almost unobservable from the
ground. With the HIFI instrument on board of the Herschel satellite it is now
possible to observe the strongest transitions of light hydrides, in particular
H2O but also the reactive ions OH+ and H2O+, which are thought to play a
crucial role in the formation of OH and H2O. HIFI early results revealed that
indeed water and its cation H2O+ are abundant components of the
interstellar medium. The additional HIFI detection of OH+ is an important
confirmation of the gas-phase route of water. Although key programs have
targeted few massive sources to map the water distribution, a
comprehensive study including other important hydrides such as OH+ and H2O+,
and covering sources in different evolutionary phases, has not
been provided yet.
This project proposes a dedicated study of water and related hydrides (H2O+ and
OH+) in massive protostellar outflows in order to: a) trace the water
distribution throughout the different evolutionary phases of massive star
formation, b) determine the contribution of water emission in the energy lost
by shocks, and c) unveil the role of ions such as OH+ and H2O+ in the production of water.
Instrument HIFI_HifiMapping_fly
Temporal Coverage 2013-04-13T07:27:33Z/2013-04-18T17:43:23Z
Version SPG v14.1.0
Mission Description Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/h®erschel/
Date Published 2013-10-18T17:26:16Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013, Mapping Water And Related Hydrides In Massive Protostellar Outflows With Hifi, SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-33h7wuf