A dataset provided by the European Space Agency

Name OT1_jrizzo_1
Title A HIFI survery of Water Fountain stars: unveiling the inner structure of hit star envelopes.
URL

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DOI 10.5270/esa-c7yvf9m
Author rizzo, j. r.
Description ''Water fountain.. stars (WF) are considered key objects to our knowledge of the sun-like star evolution processed. At some point soon after AGBs, WFs would develop very fast and highly-collimated outflows, which produces H _2 O maser emission, spread over more than 100,kms, when hitting the AGB previous envelope. Very recently, our group has detected low- J CO and ^{13} CO line emission arising in the cold, outer parts of the envelope. Based on these results, we ask for HIFI observations of mid- and high- J lines of CO, together with a set of thermal H _2 O lines, and CI. With these data, we plan to probe the inner, hotter, and denser parts of the envelopes, and to give some insights about the mass-loss history and chemistry; possibles PDRs will also be tested. This information will provide valuable inputs to our models, such as the total mass, and temperature profile. Some physical parameters will be also constrained. We have selected the whole sample of known WFs, a total of 14 sources (two of them still unpublished), for this project.
Publication
Instrument HIFI_HifiPoint_dbs
Temporal Coverage 2012-04-20T11:16:57Z/2013-03-08T19:06:13Z
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 2013-09-08T18:55:06Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-09-08T18:55:06Z, OT1_jrizzo_1, SPG v14.1.0. https://doi.org/10.5270/esa-c7yvf9m