A dataset provided by the European Space Agency

Name OT2_dneufeld_7
Title High frequency water masers with Herschel-HIFI
URL

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DOI 10.5270/esa-ilt1xkb
Author neufeld, d.
Description Using HIFI, we will observe three rotational transitions of water vapor, all predicted to be strong submillimeter masers, toward the massive star-forming regions W49N and W51 (Main); and toward the oxygen-rich evolved stars VY CMa and U Her. The target transitions are the 5(23) - 4(41), 5(24) - 3(31), and 6(34) - 5(41) pure rotational lines of water at 621, 970, and 1158 GHz. In combination with maser transitions of lower frequency that can be observed from the ground, the proposed observations will constrain the conditions of gas temperature, gas density, and IR radiation field within the maser-emitting region, providing important constraints upon the maser pumping mechanism. In the case of the star-forming interstellar regions, the proposed observations will also constrain the nature of the shock waves that power the maser emission.
Publication
Instrument HIFI_HifiPoint_dbs
Temporal Coverage 2012-09-06T19:18:36Z/2013-04-05T18:30:36Z
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 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2013-10-05T18:23:31Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-10-05T18:23:31Z, OT2_dneufeld_7, SPG v14.1.0. https://doi.org/10.5270/esa-ilt1xkb