| Name | OT2_anoriega_2 |
| Title | SABER: Spectral Analysis of the Bowshock Emission in a Runaway |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342250998&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-5upm9w9 |
| Author | noriega-crespo, a. |
| Description | Bowshocks around runaway OB stars are some of the most spectacularobjects in the mid/far infrared, covering in some cases as muchas 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 coolingthat 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 difficultto 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 usezeta Oph as a template to make sense of the physical propertiesof the many more runaway bowshocks are continuously being discovered. |
| Publication | |
| 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 |
| Keywords | Herschel, HSC, submillimetre, far-infrared, HIFI, PACS, SPIRE |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, noriega-crespo et al., 2013, 'SABER: Spectral Analysis of the Bowshock Emission in a Runaway', SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-5upm9w9 |