A dataset provided by the European Space Agency

Name OT2_anoriega_2
Title SABER: Spectral Analysis of the Bowshock Emission in a Runaway


DOI https://doi.org/10.5270/esa-5upm9w9
Author noriega-crespo, a.
Description Bowshocks around runaway OB stars are some of the most spectacular objects in the mid-far infrared, covering in some cases as much as half a degree across the sky. The bowshocks are essentially enormous gas shells contained by ram pressure where the dust trapped in their interiors reprocesses the UV flux from the parent OB stars and re-radiates it in the infrared. The pressure balance between the stellar wind and the ISM, also implies a tight relationship between their physical properties, and therefore, bowshocks from runaway stars provide a powerful tool to probe the interstellar medium and-or the properties of the OB stellar wind. The formation of these shells requires very efficient cooling that is expected to take place through the emission of a wealth of atomic fine structure lines, like [OI] 63.2 or [NII] 205.2 micron. Because the diffuse nature of these shells it has been very difficult to confirm this expectation using spectroscopic observations. In this project we propose to use the PACS spectrometer to observe the zeta Oph bowshock in order to better understand and constrain the physical conditions of its gas shell, its dust properties, its turbulence, and in such a way that will allow to use zeta Oph as a template to make sense of the physical properties of the many more runaway bowshocks are continuously being discovered.
Instrument PACS_PacsLineSpec_large
Temporal Coverage 2012-09-15T10:08:24Z/2012-09-15T16:13:44Z
Version SPG v14.2.0
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 2013-03-15T15:18:41Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013, OT2_anoriega_2, SPG v14.2.0. https://doi.org/10.5270/esa-5upm9w9