| Name | OT2_yokada_2 |
| Title | Si and Fe depletion study in both ionized and PDR gas of Galactic star-forming regions combined with Spitzer |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342270680&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-2feyfpb |
| Author | okada, y. |
| Description | We propose PACS line spectroscopy observations as well as partly photometry to estimate the Si and Fe gas-phase abundance with a clear separation of the contribution from the ionized and photodissociation region (PDR) gas combined with Spitzer/IRS observations (GO2; ID200612) in 7 Galactic star-forming regions. With Spitzer/IRS observations the Si and Fe gas-phase abundance has been examined and the depletion of Si is shown to be clearly larger than that of Fe, but the attribution of the origin of SiII 35 micron and FeII 26 micron are very limited and individual gas-phase abundance has large uncertainties. In this proposal, we plan to separate two gas-phases of the ionized and PDR gas from taking the correlation of the SiII 35 micron and FeII 26 micron emission with NII 122 micron and OI 146 micron. The electron density derived from NII 122 micron / 205 micron and the PDR properties derived from OI 63 micron and 146 micron, CII 158 micron, and the total far-infrared flux will be used to convert the line intensity ratio into the ionic abundance ratio. |
| Publication | |
| Instrument | PACS_PacsLineSpec_point |
| Temporal Coverage | 2013-04-21T13:28:16Z/2013-04-21T14:17:47Z |
| 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 | 2013-10-21T13:54:06Z |
| Keywords | Herschel, HSC, submillimetre, far-infrared, HIFI, PACS, SPIRE |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, okada et al., 2013, 'Si and Fe depletion study in both ionized and PDR gas of Galactic star-forming regions combined with Spitzer', SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-2feyfpb |